/* ─── Design tokens (Classum system) ─────────────────────────── */
:root {
  /* Surface */
  --color-canvas:   #F6F6F9;
  --color-surface:  #FFFFFF;
  --color-subtle:   #F0F2F8;
  --color-hero-dark:#121215;

  /* Brand */
  --color-signal:   #FF4438;

  /* Text */
  --color-ink:      #232334;
  --color-slate:    #49495A;
  --color-mute:     #666B80;
  --color-disabled: #758696;

  /* Border */
  --color-border:   #B5B9C8;

  /* Accent */
  --color-sky:      #0A84FF;
  --color-cobalt:   #243CE7;
  --color-violet:   #A567E4;
  --color-teal:     #00C3D0;
  --color-green:    #34C759;

  /* Radius */
  --r-4:    4px;
  --r-8:    8px;
  --r-12:   12px;
  --r-16:   16px;
  --r-20:   20px;
  --r-30:   30px;
  --r-pill: 999px;

  /* Typography */
  --font-family: 'Pretendard Variable', 'Pretendard', 'Inter', -apple-system, BlinkMacSystemFont,
    system-ui, Roboto, 'Helvetica Neue', 'Segoe UI', 'Apple SD Gothic Neo',
    'Noto Sans KR', sans-serif;
}

/* ─── Reset & base ────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body, button, input, select, textarea {
  font-family: var(--font-family);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "cv05", "cv08", "cv11";
  letter-spacing: -0.018em;
  word-break: keep-all;
}

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--color-canvas);
  color: var(--color-ink);
  font-size: 14px;
  line-height: 1.43;
}

/* ─── App shell ───────────────────────────────────────────────── */
#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* ─── Top bar ─────────────────────────────────────────────────── */
#topbar {
  display: flex;
  flex-direction: column;
  height: auto;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
  -webkit-app-region: drag;
  transition: background 0.3s, border-color 0.3s, box-shadow 0.3s;
  z-index: 100;
}

#topbar.landing-mode {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  background: transparent;
  border-bottom: 1px solid rgba(35, 35, 52, 0.08);
}

#topbar.landing-mode.scrolled {
  position: fixed;
  background: #ffffff;
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 4px 15px rgba(35, 35, 52, 0.03);
  animation: slide-down-nav 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slide-down-nav {
  from { transform: translateY(-100%); }
  to { transform: translateY(0); }
}

.top-banner {
  display: flex;
  align-items: center;
  height: 32px;
  background: var(--color-subtle);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-mute);
  font-size: 11px;
  font-weight: 500;
  width: 100%;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

#topbar.landing-mode.scrolled .top-banner {
  height: 0;
  opacity: 0;
  border-bottom: none;
}

#topbar:not(.landing-mode) .top-banner {
  display: none;
}

.banner-container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 40px;
}

.banner-links a {
  color: inherit;
  text-decoration: none;
  font-weight: 600;
}

.banner-links a:hover {
  color: var(--color-ink);
}

.main-navbar {
  display: flex;
  align-items: center;
  height: 56px;
  width: 100%;
  padding: 0 40px;
  box-sizing: border-box;
  transition: height 0.3s;
}

#topbar.landing-mode.scrolled .main-navbar {
  height: 52px;
}

.nav-container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0;
  flex-wrap: nowrap;
  white-space: nowrap;
}

#topbar:not(.landing-mode) .main-navbar {
  padding: 0 24px;
}

#topbar:not(.landing-mode) .nav-container {
  max-width: 100%;
  padding: 0;
}

#topbar:not(.landing-mode) .nav-tabs {
  display: none;
}

.nav-left-group {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: nowrap;
  white-space: nowrap;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-ink);
  transition: color 0.3s;
  flex-shrink: 0;
}

.logo-bold {
  font-family: 'Outfit', -apple-system, sans-serif;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-ink);
}

.logo-divider {
  font-size: 16px;
  opacity: 0.35;
  margin: 0 2px;
  color: var(--color-mute);
}

.logo-light {
  font-family: 'Inter', 'Pretendard Variable', sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-mute);
}

.nav-tabs {
  display: flex;
  gap: 6px;
  flex-wrap: nowrap;
  white-space: nowrap;
}

.nav-tab-link {
  font-family: 'Inter', 'Pretendard Variable', sans-serif;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
  padding: 5px 10px;
  border-radius: 6px;
  transition: all 0.3s;
  color: var(--color-mute);
}

.nav-tab-link:hover, .nav-tab-link.active {
  color: var(--color-ink);
}

.nav-actions {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-nav-ghost {
  font-family: 'Inter', 'Pretendard Variable', sans-serif;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-mute);
  background: transparent;
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
  margin-right: 8px;
}

.btn-nav-ghost:hover {
  color: var(--color-ink);
  background: var(--color-subtle);
}

.btn-nav-primary {
  font-family: 'Inter', 'Pretendard Variable', sans-serif;
  padding: 10px 22px;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  background: var(--color-ink);
  color: #ffffff;
}

.btn-nav-primary:hover {
  background: var(--color-slate);
}

/* ─── Step indicator (pill chips) ────────────────────────────── */
.step-chips {
  display: flex;
  align-items: center;
  gap: 4px;
}

.step-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--r-pill);
  font-size: 12px;
  font-weight: 600;
  background: var(--color-subtle);
  color: var(--color-mute);
  transition: background 0.15s, color 0.15s;
}

.step-chip.active {
  background: var(--color-signal);
  color: #fff;
}

.step-chip.done {
  background: var(--color-subtle);
  color: var(--color-green);
}

.step-chip .chip-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: currentColor;
  font-size: 10px;
  font-weight: 700;
}

.step-chip .chip-num span {
  color: var(--color-subtle);
  line-height: 1;
}

.step-chip.active .chip-num span { color: var(--color-signal); }
.step-chip.done .chip-num span   { color: var(--color-green); }

.step-divider {
  width: 16px;
  height: 1px;
  background: var(--color-border);
}

/* ─── Main layout ─────────────────────────────────────────────── */
#main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ─── Left sidebar ────────────────────────────────────────────── */
#sidebar {
  width: 320px;
  flex-shrink: 0;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: 20px 16px;
  gap: 12px;
}

/* ─── Card ────────────────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border-radius: var(--r-20);
  padding: 16px;
  border: 1px solid var(--color-border);
}

.card-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.card-title svg {
  color: var(--color-signal);
}

/* ─── Upload zone ─────────────────────────────────────────────── */
.upload-zone {
  border: 1.5px dashed var(--color-border);
  border-radius: var(--r-12);
  padding: 20px 12px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  background: var(--color-canvas);
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--color-signal);
  background: #fff5f4;
}

.upload-zone.has-file {
  border-style: solid;
  border-color: var(--color-green);
  background: #f0faf4;
}

.upload-icon {
  display: flex;
  justify-content: center;
  margin-bottom: 8px;
  color: var(--color-mute);
}

.upload-zone.has-file .upload-icon { color: var(--color-green); }

.upload-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-slate);
  display: block;
}

.upload-hint {
  font-size: 11px;
  color: var(--color-disabled);
  margin-top: 2px;
  display: block;
}

.upload-filename {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-green);
  margin-top: 4px;
  word-break: break-all;
}

.upload-delete-btn {
  background: #ffeded;
  border: 1.2px solid #ffcccc;
  color: #d9383a;
  padding: 2px 7px;
  font-size: 10px;
  font-weight: 700;
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.upload-delete-btn:hover {
  background: #d9383a;
  border-color: #d9383a;
  color: #fff;
}


/* ─── Form inputs ─────────────────────────────────────────────── */
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-slate);
}

.input {
  width: 100%;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--r-8);
  font-family: var(--font-family);
  font-size: 14px;
  color: var(--color-ink);
  background: var(--color-canvas);
  outline: none;
  transition: border-color 0.15s;
}

.input:focus {
  border-color: var(--color-signal);
  background: var(--color-surface);
}

.input::placeholder { color: var(--color-disabled); }

.input-group {
  display: flex;
  gap: 6px;
}

.input-group .input { flex: 1; }

/* ─── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 36px;
  padding: 0 16px;
  border-radius: var(--r-8);
  font-family: var(--font-family);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  outline: none;
  transition: opacity 0.15s;
  white-space: nowrap;
}

.btn:hover   { opacity: 0.85; }
.btn:active  { opacity: 0.75; }
.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-signal);
  color: #fff;
  box-shadow: none;
}

.btn-secondary {
  background: var(--color-subtle);
  color: var(--color-ink);
}

.btn-ghost {
  background: transparent;
  color: var(--color-slate);
  border: 1px solid var(--color-border);
}

.btn-sm {
  height: 30px;
  padding: 0 12px;
  font-size: 13px;
}

.btn-full { width: 100%; }

/* ─── Badge ───────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--r-pill);
  font-size: 11px;
  font-weight: 600;
}

.badge-idle    { background: var(--color-subtle);  color: var(--color-mute); }
.badge-ready   { background: #e6f9ee;              color: var(--color-green); }
.badge-running { background: #fff3e0;              color: #e07c00; }
.badge-done    { background: #e6f9ee;              color: var(--color-green); }
.badge-error   { background: #fff0ef;              color: var(--color-signal); }

/* ─── Viewport panel ──────────────────────────────────────────── */
#viewport-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--color-canvas);
  padding: 16px;
  gap: 12px;
}

#viewport-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  position: relative;
  z-index: 150;
}

.viewport-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-ink);
  display: flex;
  align-items: center;
  gap: 8px;
}

.viewport-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.camera-control-wrapper {
  position: relative;
  margin-right: 4px;
}

.cam-type-group {
  display: flex;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  overflow: hidden;
  margin-right: 0;
}

.cam-type-btn {
  border: none;
  border-radius: 0;
  height: 30px;
  padding: 0 10px;
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.cam-type-btn + .cam-type-btn {
  border-left: 1px solid var(--color-border);
}

.cam-type-btn.active {
  background: var(--color-ink);
  color: #fff;
}

.cam-type-btn:not(.active):hover {
  background: var(--color-surface);
  color: var(--color-signal);
}

#three-canvas-wrap {
  flex: 1;
  background: #FFFFFF;
  border-radius: var(--r-20);
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

#three-canvas-wrap canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

/* ─── Target color row ────────────────────────────────────────── */
.color-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
  padding: 0 2px;
}

.color-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-mute);
  flex-shrink: 0;
  letter-spacing: 0.02em;
}

.color-row input[type="color"] {
  width: 28px;
  height: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--r-8);
  padding: 2px;
  cursor: pointer;
  background: none;
  flex-shrink: 0;
}

.color-hex {
  font-size: 11px;
  font-family: 'Courier New', monospace;
  color: var(--color-slate);
  letter-spacing: 0.05em;
}

/* ─── Axis alignment row ──────────────────────────────────────── */
.axis-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
  padding: 0 2px;
}

.axis-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-mute);
  flex-shrink: 0;
  letter-spacing: 0.02em;
}

.axis-btn {
  flex: 1;
  padding: 4px 0;
  border: 1px solid var(--color-border);
  border-radius: var(--r-8);
  background: var(--color-subtle);
  color: var(--color-slate);
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-family);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.axis-btn:hover {
  background: var(--color-surface);
  border-color: var(--color-signal);
  color: var(--color-signal);
}

.axis-btn.active {
  background: var(--color-signal);
  border-color: var(--color-signal);
  color: #fff;
}

/* empty state overlay */
#viewport-empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--color-disabled);
  pointer-events: none;
}

#viewport-empty svg { opacity: 0.4; }

#viewport-empty p {
  font-size: 13px;
  font-weight: 500;
}

/* ─── Status bar ──────────────────────────────────────────────── */
#statusbar {
  height: 28px;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 16px;
  flex-shrink: 0;
}

.status-item {
  font-size: 11px;
  color: var(--color-mute);
  display: flex;
  align-items: center;
  gap: 4px;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-border);
}

.status-dot.ready   { background: var(--color-green); }
.status-dot.running { background: #e07c00; }

/* ─── Divider ─────────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: var(--color-border);
  margin: 4px 0;
}

/* ─── Viewport loading overlay ───────────────────────────────── */
#viewport-loading {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: rgba(18, 18, 21, 0.75);
  backdrop-filter: blur(4px);
  border-radius: var(--r-20);
  z-index: 10;
  color: var(--color-disabled);
}

#viewport-loading.visible { display: flex; }

#viewport-loading p {
  font-size: 13px;
  font-weight: 500;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(255,255,255,0.12);
  border-top-color: var(--color-signal);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Select / dropdown ───────────────────────────────────────── */
select.select-input {
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
  background-color: var(--color-canvas);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23666B80' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 30px;
}

select.select-input:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

select.select-input:focus {
  border-color: var(--color-signal);
  background-color: var(--color-surface);
  outline: none;
}

/* ─── EPW match badge ──────────────────────────────────────────── */
.epw-match-bar {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  background: #edfbf2;
  border: 1px solid #a3e6be;
  border-radius: var(--r-8);
  padding: 7px 10px;
  font-size: 11px;
  font-weight: 600;
  color: #1a7f4b;
  line-height: 1.45;
}

.epw-match-bar svg { color: #1a7f4b; flex-shrink: 0; margin-top: 1px; }
.epw-match-bar.no-file { background: #fff8e6; border-color: #ffd07a; color: #8a5a00; }
.epw-match-bar.no-file svg { color: #c07700; }

/* ─── Time slider ─────────────────────────────────────────────── */
.time-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: var(--r-pill);
  background: var(--color-subtle);
  outline: none;
  cursor: pointer;
  margin-top: 6px;
}

.time-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-signal);
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.25);
  cursor: pointer;
  transition: transform 0.1s;
}

.time-slider::-webkit-slider-thumb:hover { transform: scale(1.2); }


/* ─── Sun info bar ────────────────────────────────────────────── */
.sun-info-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-subtle);
  border-radius: var(--r-8);
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-slate);
  margin-bottom: 4px;
}

.sun-info-bar svg { color: var(--color-signal); flex-shrink: 0; }
.sun-info-bar.nighttime { color: var(--color-disabled); }
.sun-info-bar.nighttime svg { color: var(--color-disabled); }

/* ─── Heatmap legend ─────────────────────────────────────────── */
#heatmap-legend {
  position: absolute;
  bottom: 20px;
  right: 20px;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  pointer-events: none;
}

#heatmap-legend.hidden { display: none; }

#legend-title {
  font-size: 9px;
  font-weight: 800;
  color: #111;
  letter-spacing: 0.05em;
  text-align: right;
  margin-bottom: 5px;
  text-shadow: 0 0 4px #fff, 0 0 4px #fff;
  white-space: nowrap;
}

#legend-body {
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

.legend-row {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0;
  height: 10px;         /* locked: 20 bands × 10px = 200px total */
  overflow: visible;    /* label text may bleed — intentional for flush bands */
}

.legend-label {
  width: 34px;
  flex-shrink: 0;
  font-size: 8px;
  font-weight: 700;
  color: #111;
  font-family: 'Courier New', Courier, monospace;
  text-align: right;
  padding-right: 4px;
  line-height: 10px;    /* matches locked row height for perfect vertical centering */
  white-space: nowrap;
  text-shadow: 0 0 3px #fff, 0 0 3px #fff;
}

.legend-band {
  width: 40px;
  flex-shrink: 0;
  height: 10px;         /* 20 bands × 10px = 200px total column */
}

.legend-band-end {
  width: 40px;
  flex-shrink: 0;
  height: 0;            /* zero-height spacer aligns bottom "0" label to band column */
}

/* ─── Heatmap-active button state ────────────────────────────── */
.btn-heatmap-on {
  background: var(--color-signal) !important;
  color: #fff !important;
  border-color: transparent !important;
}

/* EPW suggestion hint */
.epw-suggest {
  font-size: 11px;
  color: var(--color-mute);
  margin-top: 4px;
  line-height: 1.4;
}

/* ─── Slider value label (double-click to edit) ──────────────── */
.slider-value-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-ink);
  cursor: text;
  border-bottom: 1px dashed transparent;
  transition: border-color 0.15s;
  line-height: 1;
}

.slider-value-label:hover {
  border-bottom-color: var(--color-mute);
}

.slider-label-input {
  width: 52px;
  text-align: right;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-ink);
  font-family: var(--font-family);
  background: transparent;
  border: none;
  border-bottom: 1.5px solid var(--color-signal);
  outline: none;
  padding: 0;
  line-height: 1;
}

/* ─── Toggle-active toolbar button ───────────────────────────── */
.btn-toggle-active {
  background: var(--color-ink) !important;
  color: #fff !important;
  border-color: var(--color-ink) !important;
}

.btn-toggle-active:hover {
  opacity: 0.85;
}

/* ─── Season / solstice toggle buttons ───────────────────────── */
.season-btn-group {
  display: flex;
  gap: 4px;
  margin-bottom: 8px;
}

.season-btn {
  flex: 1;
  height: 30px;
  padding: 0 2px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--r-8);
  background: var(--color-subtle);
  color: var(--color-slate);
  font-family: var(--font-family);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.season-btn:hover {
  border-color: #D97706;
  color: #D97706;
  background: #fef3c7;
}

.season-btn.active-season {
  background: #D97706;
  border-color: #D97706;
  color: #fff;
}

/* ─── Stacked analysis buttons ────────────────────────────────── */
.analysis-btn-stack {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.analysis-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 36px;
  padding: 0 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--r-8);
  background: var(--color-subtle);
  color: var(--color-slate);
  font-family: var(--font-family);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  white-space: nowrap;
  outline: none;
}

.analysis-btn:hover:not(:disabled) {
  border-color: var(--color-signal);
  color: var(--color-signal);
  background: #fff5f4; /* light pink background */
}

.analysis-btn.active-analysis {
  background: var(--color-signal);
  border-color: var(--color-signal);
  color: #fff;
}

.analysis-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ─── Rotation hint text ──────────────────────────────────────── */
.rotation-hint {
  font-size: 11px;
  color: var(--color-disabled);
  margin-top: 2px;
  line-height: 1.4;
}

/* ─── Scrollbar ───────────────────────────────────────────────── */
::-webkit-scrollbar            { width: 6px; }
::-webkit-scrollbar-track      { background: transparent; }
::-webkit-scrollbar-thumb      { background: var(--color-border); border-radius: var(--r-pill); }
::-webkit-scrollbar-thumb:hover{ background: var(--color-mute); }

/* ─── Save View (뷰 저장) Premium Floating Panel Styles ──────── */
.saved-views-panel {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 106px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--r-16);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  box-shadow: 0 10px 25px rgba(35, 35, 52, 0.08);
  z-index: 100;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.saved-views-panel:hover {
  border-color: var(--color-border);
  box-shadow: 0 12px 30px rgba(35, 35, 52, 0.12);
}

.btn-save-view {
  width: 100%;
  height: 28px;
  font-size: 11px;
  gap: 4px;
  padding: 0 8px;
}

.view-action-row {
  display: flex;
  flex-direction: column;
  width: 100%;
  gap: 4px;
}

.view-action-btn {
  width: 100%;
  height: 24px;
  font-size: 10px;
  padding: 0 8px;
  border-radius: 4px;
  gap: 4px;
  color: var(--color-slate);
  border-color: var(--color-border);
  background: rgba(240, 242, 248, 0.5);
}

.view-action-btn:hover {
  background: #fff5f4;
  border-color: var(--color-signal);
  color: var(--color-signal);
}

.saved-views-container {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
}

.saved-views-container:not(:empty) {
  margin-top: 4px;
}

.saved-views-container:empty {
  display: none;
}

.saved-view-card {
  position: relative;
  width: 80px;
  height: 52px;
  border-radius: var(--r-8);
  border: 1px solid var(--color-border);
  overflow: visible; /* to show overflow delete button */
  cursor: pointer;
  background: var(--color-canvas);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
  transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.2, 1), border-color 0.2s, box-shadow 0.2s;
}

.saved-view-card:hover {
  transform: scale(1.05);
  border-color: var(--color-signal);
  box-shadow: 0 4px 10px rgba(255, 68, 56, 0.18);
}

.saved-view-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 7px; /* inside the 8px border */
  display: block;
}

.saved-view-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.75) 0%, rgba(0, 0, 0, 0) 100%);
  color: #ffffff;
  font-size: 9px;
  font-weight: 700;
  text-align: center;
  padding: 8px 0 2px 0;
  border-bottom-left-radius: 7px;
  border-bottom-right-radius: 7px;
  pointer-events: none;
}

.saved-view-delete {
  position: absolute;
  top: -6px;
  right: -6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-signal);
  color: #ffffff;
  border: 1px solid #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  font-weight: 800;
  cursor: pointer;
  opacity: 0;
  transform: scale(0.8);
  box-shadow: 0 2px 4px rgba(0,0,0,0.15);
  transition: opacity 0.15s, transform 0.15s, background-color 0.15s;
  z-index: 10;
}

.saved-view-card:hover .saved-view-delete {
  opacity: 0.9;
  transform: scale(1);
}

.saved-view-delete:hover {
  opacity: 1.0 !important;
  background: #e0241b;
  transform: scale(1.15) !important;
}

/* ─── Capacity Warning Toast Styles ─────────────────────────── */
.saved-views-toast {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%) translateY(-100px);
  opacity: 0;
  background: #fff0ef;
  border: 1.5px solid var(--color-signal);
  border-radius: var(--r-12);
  padding: 10px 16px;
  box-shadow: 0 8px 24px rgba(255, 68, 56, 0.15);
  z-index: 200;
  pointer-events: none;
  transition: transform 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s;
}

.saved-views-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.toast-content {
  display: flex;
  align-items: center;
  gap: 12px;
}

.toast-icon {
  color: var(--color-signal);
  flex-shrink: 0;
}

.toast-text-wrap {
  display: flex;
  flex-direction: column;
}

.toast-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-signal);
  line-height: 1.3;
}

.toast-desc {
  font-size: 11px;
  color: var(--color-slate);
  margin-top: 1px;
  line-height: 1.3;
}

/* ─── Compare Mode split-screen & upload tabs ─────────────────── */
.upload-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}

.upload-tab-btn {
  flex: 1;
  height: 30px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--r-8);
  background: var(--color-subtle);
  color: var(--color-slate);
  font-family: var(--font-family);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.upload-tab-btn:hover {
  background: var(--color-surface);
  border-color: var(--color-signal);
  color: var(--color-signal);
}

.upload-tab-btn.active-tab {
  background: var(--color-signal);
  border-color: var(--color-signal);
  color: #fff;
}

.viewport-pane {
  flex: 1;
  height: 100%;
  position: relative;
  border-radius: 0;
  overflow: hidden;
  background: #FFFFFF;
}

.viewport-pane + .viewport-pane {
  border-left: 2px solid var(--color-border);
}

.pane-label-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--r-8);
  font-size: 11px;
  font-weight: 700;
  color: var(--color-slate);
  z-index: 5;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.btn-compare-on {
  background: var(--color-signal) !important;
  color: #fff !important;
  border-color: transparent !important;
}

/* ─── Visibility Control & Floating Container ────────────── */
.visibility-control-wrapper {
  position: relative;
}

.visibility-presets-container {
  position: absolute;
  top: 36px;
  left: 0;
  z-index: 110;
  display: flex;
  align-items: center;
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  box-shadow: 0 6px 20px rgba(35, 35, 52, 0.08);
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1), transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.visibility-presets-container.hidden {
  display: none !important;
  opacity: 0;
  transform: translateY(-8px);
}

/* ─── Isometric Presets Floating Container ─────────────────── */
.iso-presets-container {
  position: absolute;
  top: 36px;
  left: 0;
  z-index: 110;
  display: flex;
  align-items: center;
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  box-shadow: 0 6px 20px rgba(35, 35, 52, 0.08);
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1), transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.iso-presets-container.hidden {
  display: none !important;
  opacity: 0;
  transform: translateY(-8px);
}

.presets-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-slate);
  margin-right: 8px;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.preset-btn-group {
  display: flex;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  overflow: hidden;
  background: var(--color-surface);
}

.preset-btn {
  border: none;
  border-radius: 0;
  height: 26px;
  padding: 0 10px;
  font-size: 11px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-slate);
  background: transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s;
}

.preset-btn + .preset-btn {
  border-left: 1px solid var(--color-border);
}

.preset-btn:hover {
  background: #fff5f4;
  color: var(--color-signal);
}

.preset-btn.active {
  background: var(--color-signal) !important;
  color: #ffffff !important;
}

/* ─── Premium Custom Modal ────────────────────────────────────── */
.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(18, 18, 21, 0.4);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 1;
  transition: opacity 0.2s ease;
}

.modal-overlay.hidden {
  display: none !important;
  opacity: 0;
}

.modal-card {
  width: 320px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--r-16);
  padding: 18px 20px;
  box-shadow: 0 15px 35px rgba(35, 35, 52, 0.15);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transform: scale(1);
  transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-overlay.hidden .modal-card {
  transform: scale(0.9);
}

.modal-header {
  display: flex;
  align-items: center;
}

.modal-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: -0.01em;
}

.modal-body {
  width: 100%;
}

.modal-input {
  width: 100%;
  height: 34px;
  background: var(--color-canvas);
  border: 1.5px solid var(--color-border);
  border-radius: var(--r-8);
  padding: 0 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-ink);
  outline: none;
  transition: border-color 0.15s, background-color 0.15s;
}

.modal-input:focus {
  border-color: var(--color-signal);
  background: var(--color-surface);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
}

/* ─── Loading progress bar ───────────────────────────────────── */
#loading-progress-wrap {
  width: 60%;
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
}

#loading-progress-track {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--r-pill);
  overflow: hidden;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.2);
}

#loading-progress-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--color-signal), #ff8a80);
  border-radius: var(--r-pill);
  transition: width 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 8px rgba(255, 68, 56, 0.5);
}

#loading-progress-text {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-disabled);
  letter-spacing: 0.05em;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* ─── Page Switching Tabs ─────────────────────────────────────── */
.page-tabs {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-subtle);
  padding: 3px;
  border-radius: var(--r-8);
  border: 1px solid var(--color-border);
}

.page-tab-btn {
  border: none;
  background: transparent;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-mute);
  border-radius: var(--r-6);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.page-tab-btn:hover {
  color: var(--color-ink);
}

.page-tab-btn.active {
  background: var(--color-surface);
  color: var(--color-ink);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* ─── Landing Page Shell ───────────────────────────────────────── */
#landing-page {
  flex-grow: 1;
  overflow-y: auto;
  background: var(--color-canvas);
  color: var(--color-ink);
  font-family: var(--font-family);
  scroll-behavior: smooth;
}

#landing-page::-webkit-scrollbar {
  width: 8px;
}
#landing-page::-webkit-scrollbar-track {
  background: var(--color-canvas);
}
#landing-page::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.1);
  border-radius: 4px;
}
#landing-page::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.2);
}

/* ─── Hero Section ────────────────────────────────────────────── */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 90px 40px 60px 40px;
  background: radial-gradient(circle at 80% 50%, #e2e8f0 0%, var(--color-canvas) 70%);
  overflow: hidden;
}

.hero-container {
  max-width: 1200px;
  width: 100%;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-left {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--color-mute);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 6px 14px;
  border-radius: 4px;
  width: fit-content;
  margin-bottom: 24px;
  text-transform: uppercase;
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--color-signal);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--color-signal);
  animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.5; }
  100% { transform: scale(1); opacity: 1; }
}

.hero-title {
  font-size: 58px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--color-ink);
  margin-bottom: 24px;
  text-align: left;
}

.hero-title .accent-text {
  background: linear-gradient(135deg, var(--color-signal), #FF8A80);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-slate);
  margin-bottom: 36px;
  max-width: 580px;
  text-align: left;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
}

.hero-actions .btn {
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 700;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
}

.hero-actions .btn-primary {
  background: var(--color-ink);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 15px rgba(35, 35, 52, 0.15);
}

.hero-actions .btn-primary:hover {
  background: var(--color-slate);
  transform: translateY(-2px);
}

.hero-actions .btn-outline {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-border);
}

.hero-actions .btn-outline:hover {
  background: var(--color-subtle);
  border-color: var(--color-slate);
  transform: translateY(-2px);
}

.hero-keywords {
  display: flex;
  gap: 20px;
  font-size: 13px;
  color: var(--color-mute);
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
}

.hero-keywords span::before {
  content: '✓';
  margin-right: 6px;
  color: var(--color-signal);
  font-weight: 700;
}

/* ─── Hero Canvas Wrap (3D Viewer) ────────────────────────────── */
.hero-canvas-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(35, 35, 52, 0.08);
  backdrop-filter: blur(10px);
}

#hero-three-canvas {
  width: 100%;
  height: 100%;
}

.canvas-overlay-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--color-border);
  color: var(--color-ink);
  padding: 6px 12px;
  border-radius: 4px;
  backdrop-filter: blur(5px);
}

.canvas-overlay-badge .play-icon {
  font-size: 8px;
  color: #34C759;
}

/* ─── Landing Sections ────────────────────────────────────────── */
.landing-section {
  padding: 100px 40px;
  background: var(--color-canvas);
}

.landing-section.bg-darker {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  margin-bottom: 60px;
  display: flex;
  align-items: flex-end;
  gap: 16px;
}

.section-num {
  font-family: 'Pretendard Variable', monospace;
  font-size: 64px;
  font-weight: 800;
  line-height: 0.8;
  color: var(--color-signal);
  opacity: 0.15;
  letter-spacing: -0.05em;
}

.section-title {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-ink);
  line-height: 1;
}

.section-subtitle-text {
  font-size: 16.5px;
  font-weight: 500;
  color: var(--color-slate);
  line-height: 1.6;
  margin-top: -36px;
  margin-bottom: 40px;
}

/* ─── Comparison Grid (Why Section 01) ───────────────────────── */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

@media (max-width: 860px) {
  .comparison-grid {
    grid-template-columns: 1fr;
  }
}

.comparison-card {
  position: relative;
  border-radius: var(--r-16);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s;
}

.comparison-card.traditional {
  background: var(--color-subtle);
  border: 1px dashed var(--color-border);
}

.comparison-card.archa {
  background: var(--color-surface);
  border: 2px solid var(--color-signal);
  box-shadow: 0 12px 35px rgba(255, 68, 56, 0.12);
}

.comp-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 800;
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
  width: fit-content;
}

.old-badge {
  background: rgba(102, 107, 128, 0.12);
  color: var(--color-mute);
}

.new-badge {
  background: var(--color-signal);
  color: #ffffff;
}

.comp-card-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-ink);
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.comp-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.comp-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.comp-icon {
  font-size: 15px;
  font-weight: 800;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.comp-icon.bad {
  background: rgba(211, 47, 47, 0.12);
  color: #d32f2f;
}

.comp-icon.good {
  background: rgba(46, 125, 50, 0.12);
  color: #2e7d32;
}

.comp-list strong {
  font-size: 14.5px;
  color: var(--color-ink);
  display: block;
  margin-bottom: 2px;
}

.comp-list p {
  font-size: 13px;
  color: var(--color-mute);
  line-height: 1.45;
}

/* ─── Features Grid ───────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card, .step-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 30px 24px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  text-align: left;
}

.feature-card:hover, .step-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-signal);
  background: var(--color-surface);
  box-shadow: 0 15px 35px rgba(35, 35, 52, 0.08);
}

.card-header-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 20px;
}

.card-title-main {
  font-size: 26px;
  font-weight: 800;
  color: var(--color-ink);
  font-family: var(--font-family);
  letter-spacing: -0.02em;
}

.card-title-sub {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-mute);
  font-family: var(--font-family);
}

.card-desc {
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-slate);
  margin-bottom: 24px;
  text-align: left;
  font-weight: 400;
}

.card-desc strong {
  font-weight: 700;
  color: var(--color-ink);
  margin-right: 6px;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.card-tags span {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-mute);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 4px;
  font-family: var(--font-family);
  font-weight: 500;
}

/* ─── Steps Grid ──────────────────────────────────────────────── */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

/* ─── Responsive Media Queries ────────────────────────────────── */
@media (max-width: 968px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-title {
    font-size: 42px;
  }
  .features-grid, .steps-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .hero-canvas-wrap {
    max-width: 480px;
    margin: 0 auto;
  }
}

/* ─── Credit Badge & Watermark ────────────────────────────────── */
.user-credit-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 193, 7, 0.12);
  border: 1px solid rgba(255, 193, 7, 0.35);
  color: #b7791f;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
  margin-right: 12px;
  transition: all 0.2s ease;
}

.user-credit-badge:hover {
  background: rgba(255, 193, 7, 0.22);
  transform: translateY(-1px);
}

.credit-icon {
  font-size: 13px;
}

/* Canvas Watermark Overlay */
.canvas-watermark {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 25;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  opacity: 0.12;
  font-family: 'Outfit', -apple-system, sans-serif;
  font-size: 38px;
  font-weight: 800;
  color: #121215;
  transform: rotate(-22deg);
  user-select: none;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
  transition: opacity 0.3s;
}

.canvas-watermark.hidden-watermark {
  display: none !important;
}

/* ─── Pricing Section Layout ──────────────────────────────────── */
.pricing-section {
  padding: 100px 40px;
  background: #ffffff;
  border-top: 1px solid var(--color-border);
}

.pricing-container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-header.center {
  text-align: center;
  margin-bottom: 50px;
}

.section-header.center .section-title {
  font-size: 34px;
  font-weight: 800;
  color: var(--color-ink);
  letter-spacing: -0.02em;
  margin-top: 6px;
}

.section-header.center .section-desc {
  font-size: 16px;
  color: var(--color-mute);
  margin-top: 8px;
}

/* Billing Toggle Switch */
.billing-toggle-wrapper {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-top: 24px;
  background: var(--color-canvas);
  padding: 6px 16px;
  border-radius: 30px;
  border: 1px solid var(--color-border);
}

.toggle-label {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-mute);
  transition: color 0.2s;
}

.toggle-label.active {
  color: var(--color-ink);
  font-weight: 800;
}

.discount-badge {
  background: rgba(255, 68, 56, 0.1);
  color: var(--color-signal);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 700;
}

/* Toggle Switch Styling */
.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.switch input { opacity: 0; width: 0; height: 0; }

.slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: #ccc;
  transition: .3s;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .3s;
}

input:checked + .slider { background-color: var(--color-signal); }
input:checked + .slider:before { transform: translateX(20px); }
.slider.round { border-radius: 24px; }
.slider.round:before { border-radius: 50%; }

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.30fr 1.05fr 1.05fr;
  gap: 16px;
  margin-bottom: 60px;
}

@media (max-width: 1100px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .pricing-grid {
    grid-template-columns: 1fr;
  }
}

.pricing-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--r-16);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s, box-shadow 0.3s;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(35, 35, 52, 0.08);
}

.pricing-card.featured {
  border: 2px solid var(--color-signal);
  box-shadow: 0 10px 25px rgba(255, 68, 56, 0.12);
}

.featured-badge {
  position: absolute;
  top: -14px;
  right: 20px;
  background: var(--color-signal);
  color: #ffffff;
  font-size: 10.5px;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: 12px;
  letter-spacing: 0.05em;
}

.plan-name {
  font-family: 'Outfit', sans-serif;
  font-size: 20px;
  font-weight: 800;
  color: var(--color-ink);
}

.plan-desc {
  font-size: 12.5px;
  color: var(--color-mute);
  margin-top: 4px;
  min-height: 36px;
}

.plan-price {
  margin: 18px 0;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px;
  min-height: 54px;
}

.price-val {
  font-family: 'Outfit', sans-serif;
  font-size: 32px;
  font-weight: 800;
  color: var(--color-ink);
}

.price-unit {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-mute);
}

.price-subtext {
  width: 100%;
  font-size: 11.5px;
  color: var(--color-mute);
  margin-top: 2px;
}

/* Credit Pack List inside card */
.credit-pack-list {
  background: var(--color-canvas);
  border-radius: 12px;
  padding: 8px;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pack-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 12px;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}

.pack-item.highlight {
  border-color: rgba(255, 68, 56, 0.4);
  background: #fffdfd;
}

.pack-num {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 12px;
  color: var(--color-mute);
  background: var(--color-canvas);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  flex-shrink: 0;
  transition: all 0.2s ease;
}

.pack-num.highlight {
  color: var(--color-signal);
  background: rgba(255, 68, 56, 0.1);
  border-color: rgba(255, 68, 56, 0.2);
}

.btn-pack-buy {
  padding: 6px 14px;
  font-size: 12.5px;
  font-weight: 700;
  border-radius: 6px;
  background: #f1f5f9;
  color: var(--color-ink);
  border: 1px solid #cbd5e1;
  transition: all 0.22s ease;
  white-space: nowrap;
}

.pack-item.highlight .btn-pack-buy {
  background: var(--color-signal);
  color: #ffffff;
  border-color: var(--color-signal);
}

/* Hover effects for pack items */
.pack-item:hover {
  border-color: var(--color-signal);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(255, 68, 56, 0.15);
  background: #ffffff;
}

.pack-item:hover .pack-num {
  background: var(--color-signal);
  color: #ffffff;
  border-color: var(--color-signal);
}

.pack-item:hover .btn-pack-buy {
  background: var(--color-signal);
  color: #ffffff;
  border-color: var(--color-signal);
  box-shadow: 0 3px 10px rgba(255, 68, 56, 0.3);
}

.plan-features {
  list-style: none;
  margin-bottom: 24px;
  flex-grow: 1;
}

.plan-features li {
  font-size: 13px;
  color: var(--color-ink);
  margin-bottom: 10px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.4;
}

.plan-features li.muted {
  color: var(--color-disabled);
}

.check-icon { color: #2e7d32; font-weight: bold; }
.cross-icon { color: #d32f2f; font-weight: bold; }

.plan-btn {
  width: 100%;
  padding: 12px 0;
  font-size: 13.5px;
  font-weight: 700;
  text-align: center;
  border-radius: 8px;
}

/* Credit Policy Spec Table */
.credit-policy-box {
  background: var(--color-canvas);
  border: 1px solid var(--color-border);
  border-radius: var(--r-16);
  padding: 30px;
}

.policy-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 18px;
}

.policy-table-wrapper {
  overflow-x: auto;
}

.policy-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  text-align: left;
}

.policy-table th, .policy-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
}

.policy-table th {
  background: var(--color-subtle);
  color: var(--color-ink);
  font-weight: 700;
}

.free-badge {
  color: #2e7d32;
  font-weight: 700;
}

/* Credit Confirmation Modal */
.credit-modal-card {
  width: 420px;
  max-width: 90vw;
}

.credit-calc-box {
  background: var(--color-canvas);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 14px;
}

.calc-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  margin-bottom: 8px;
}

.calc-row:last-child { margin-bottom: 0; }

.calc-lbl { color: var(--color-mute); }
.calc-val { color: var(--color-ink); font-weight: 700; }

.badge-mode {
  background: var(--color-subtle);
  color: var(--color-ink);
  font-size: 11px;
}

.calc-divider {
  border: 0;
  border-top: 1px dashed var(--color-border);
  margin: 10px 0;
}

.total-row .calc-lbl { font-weight: 700; color: var(--color-ink); }
.total-credits-val { font-size: 18px; color: var(--color-signal); font-weight: 800; }

.balance-row .balance-val { font-weight: 700; color: #b7791f; }

.credit-notice-text {
  font-size: 12px;
  color: var(--color-mute);
  margin-bottom: 16px;
}

/* ─── Social Login Modal Styles ───────────────────────────────── */
.login-modal-card {
  width: 440px;
  max-width: 92vw;
  border-radius: var(--r-16);
  position: relative;
  padding: 28px 24px 20px 24px;
}

.login-modal-close-btn {
  position: absolute;
  top: 16px;
  right: 18px;
  background: transparent;
  border: none;
  font-size: 20px;
  font-weight: 400;
  color: var(--color-mute);
  cursor: pointer;
  padding: 4px 8px;
  line-height: 1;
  opacity: 0.6;
  transition: opacity 0.2s, color 0.2s;
  outline: none;
}

.login-modal-close-btn:hover {
  opacity: 1;
  color: var(--color-ink);
}

.report-card-option:hover {
  border-color: var(--color-signal) !important;
  box-shadow: 0 4px 16px rgba(255, 68, 56, 0.12);
  transform: translateY(-1px);
}

.social-login-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.btn-social {
  width: 100%;
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  box-sizing: border-box;
}

.btn-social.kakao {
  background-color: #FEE500;
  color: #191919;
}

.btn-social.kakao:hover {
  background-color: #FADA0A;
  transform: translateY(-1px);
}

.btn-social.naver {
  background-color: #03C75A;
  color: #FFFFFF;
}

.btn-social.naver:hover {
  background-color: #02b350;
  transform: translateY(-1px);
}

.btn-social.google {
  background-color: #FFFFFF;
  color: #3c4043;
  border: 1px solid #dadce0;
}

.btn-social.google:hover {
  background-color: #f8f9fa;
  border-color: #d2e3fc;
  transform: translateY(-1px);
}

.social-icon {
  font-size: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ─── Shadow Target Segment Toggle ───────────────────────────── */
.shadow-target-toggle {
  background: var(--color-subtle, #f0f2f8);
  border-radius: 8px;
  padding: 3px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
  border: 1px solid var(--color-border, #e2e8f0);
}

.btn-segment {
  background: transparent;
  border: none;
  border-radius: 6px;
  padding: 7px 4px;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-mute, #666B80);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  text-align: center;
  outline: none;
  user-select: none;
}

.btn-segment:hover:not(.active) {
  color: var(--color-ink, #232334);
  background: rgba(255, 255, 255, 0.5);
}

.btn-segment.active {
  background: #ffffff;
  color: var(--color-ink, #232334);
  font-weight: 700;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
}

/* ─── Floating Cursor Tooltip for Grid Slider & General UI ─── */
.floating-cursor-tooltip {
  position: fixed;
  z-index: 100000;
  pointer-events: none;
  background: rgba(26, 28, 40, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: #ffffff;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.18);
  white-space: nowrap;
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.12s cubic-bezier(0.4, 0, 0.2, 1), transform 0.12s cubic-bezier(0.4, 0, 0.2, 1);
}

.floating-cursor-tooltip.active {
  opacity: 1;
  transform: scale(1.0);
}

.floating-cursor-tooltip .tooltip-warn {
  color: #ffaa00;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 4px;
}