/* ─── CenterNotes Portal — Design System ─── */
:root {
  --ink: #16110f;
  --ink-soft: rgba(22, 17, 15, 0.6);
  --paper: #fffdfc;
  --bg: #f7f2ed;
  --card: #ffffff;
  --card-hover: #fdf8f5;
  --accent: #aa5c3f;
  --accent-soft: #fdf6f2;
  --accent-deep: #7c412d;
  --line: rgba(22, 17, 15, 0.07);
  --line-strong: rgba(22, 17, 15, 0.12);

  --r-card: 32px;
  --r-input: 16px;
  --shadow-premium:
    0 2px 4px rgba(22, 17, 15, 0.02),
    0 12px 40px rgba(22, 17, 15, 0.08),
    0 40px 80px rgba(22, 17, 15, 0.04);

  font-family: "Manrope", sans-serif;
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  
  /* ── Liquid Transition System ── */
  --t-theme: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --t-hover: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ─── Dark Theme Override ─── */
[data-theme="dark"] {
  --ink: #f5ede0;
  --ink-soft: rgba(245, 237, 224, 0.55);
  --paper: #1c1410;
  --bg: #14110e;
  --card: #1f1a16;
  --card-hover: #261f19;
  --accent: #c4622e;
  --accent-soft: rgba(196, 98, 46, 0.12);
  --accent-deep: #9d4a20;
  --line: rgba(245, 237, 224, 0.08);
  --line-strong: rgba(245, 237, 224, 0.15);
  --shadow-premium:
    0 2px 4px rgba(0, 0, 0, 0.2),
    0 12px 40px rgba(0, 0, 0, 0.4),
    0 40px 80px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] body { background: var(--bg); }

[data-theme="dark"] .glass-panel {
  background: var(--card);
  border-color: var(--line-strong);
  backdrop-filter: none;
}

[data-theme="dark"] .input-field {
  background: rgba(255,255,255,0.05);
  border-color: var(--line-strong);
  color: var(--ink);
}

[data-theme="dark"] .input-field::placeholder { color: var(--ink-soft); }

[data-theme="dark"] .input-field:focus {
  background: rgba(255,255,255,0.07);
  border-color: var(--accent);
}

[data-theme="dark"] .chip {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink-soft);
}

[data-theme="dark"] .chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

[data-theme="dark"] .center-banner {
  background: linear-gradient(135deg, #2a1e16 0%, #1a1310 100%);
  border: 1px solid var(--line-strong);
}

[data-theme="dark"] .center-banner::before {
  content: "";
  position: absolute;
  top: -60px; right: -60px;
  width: 280px; height: 280px;
  background: radial-gradient(circle, rgba(196, 98, 46, 0.18), transparent 70%);
  pointer-events: none;
}

[data-theme="dark"] .module-card {
  background: var(--card);
  border-color: var(--line-strong);
}

[data-theme="dark"] .module-card:hover {
  background: var(--card-hover);
  border-color: var(--accent);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4), 0 0 0 1px rgba(196,98,46,0.2);
}

[data-theme="dark"] .locked-view {
  background: transparent;
  border-color: var(--line-strong);
}

[data-theme="dark"] .upsell-card {
  background: var(--card);
  border-color: var(--line-strong);
}

[data-theme="dark"] .btn-signout,
[data-theme="dark"] .btn-billing {
  border-color: var(--line-strong);
  color: var(--ink-soft);
  background: transparent;
}

/* ─── Theme Toggle ─── */
.theme-toggle {
  background: transparent;
  border: 1.5px solid var(--line-strong);
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ink-soft);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: 0.2s;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); }
.theme-toggle-icon { font-size: 0.95rem; line-height: 1; }

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  transition: background var(--t-theme), color var(--t-theme);
}

/* ─── Brand Mark ─── */
.brand-mark {
  width: 2.75rem;
  height: 2.75rem;
  background: #f5efe5;
  color: #10151b;
  border-radius: 0.9rem;
  display: grid; place-items: center;
  font-family: "Syne", sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  box-shadow: 0 10px 24px rgba(17, 22, 28, 0.18);
  transition: transform var(--t-hover);
}
.brand-mark:hover { transform: scale(1.05); }

/* ─── Header ─── */
.nav-bar {
  padding: 2rem 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-left, .nav-right { display: flex; align-items: center; gap: 1.5rem; }
.brand-title {
  font-family: "Syne", sans-serif;
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: normal;
}
.nav-link {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  text-decoration: none;
  transition: 0.2s;
}
.nav-link:hover { color: var(--accent); }

.btn-signout,
.btn-billing {
  padding: 0.5rem 1.25rem;
  border: 1.5px solid var(--line);
  border-radius: 999px;
  background: white;
  cursor: pointer;
}

/* ─── Command Center ─── */
.command-center {
  padding: 0 3rem;
  margin-bottom: 3rem;
}
.glass-panel {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--r-card);
  padding: 2.5rem 3rem;
  box-shadow: var(--shadow-premium);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4rem;
  transition: 
    background var(--t-theme), 
    border-color var(--t-theme),
    box-shadow var(--t-theme),
    transform var(--t-hover);
}

.access-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1;
}
.access-label {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
}
.input-row {
  display: flex;
  gap: 1rem;
}
.input-field {
  flex: 1;
  background: #f0eae4;
  border: 2px solid transparent;
  border-radius: var(--r-input);
  padding: 1rem 1.5rem;
  font-size: 1.25rem;
  font-weight: 800;
  outline: none;
  transition: 0.2s;
}
.input-field:focus {
  background: white;
  border-color: var(--accent);
  box-shadow: 0 0 0 6px rgba(170, 92, 63, 0.1);
}

.btn-open {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--r-input);
  padding: 0 2rem;
  font-weight: 800;
  font-size: 1rem;
  cursor: pointer;
  transition: 0.2s;
}
.btn-open:hover {
  background: var(--accent-deep);
  transform: translateY(-2px);
}

.samples-box {
  border-left: 1px solid var(--line);
  padding-left: 3rem;
}
.chips-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}
.chip {
  background: white;
  border: 1px solid var(--line);
  padding: 0.5rem 1.25rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: 0.2s;
}
.chip:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ─── Center Identity ─── */
.center-banner {
  margin: 0 3rem 3rem;
  background: #1a1310;
  color: #fffcf9;
  border-radius: var(--r-card);
  padding: 4rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-premium);
  transition: background 0.3s;
}
.banner-title {
  font-family: "Fraunces", serif;
  font-size: 3.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
.banner-badges {
  display: flex;
  gap: 1rem;
}
.badge {
  background: rgba(255, 255, 255, 0.1);
  padding: 0.5rem 1.25rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
}

/* ─── Modules ─── */
.content-area {
  padding: 0 3rem 6rem;
  flex: 1;
}
.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 2.5rem;
}

.module-card {
  background: var(--card);
  border-radius: var(--r-card);
  padding: 3rem;
  border: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
  transition: 
    transform var(--t-hover),
    box-shadow var(--t-hover),
    background var(--t-theme),
    border-color var(--t-theme);
  box-shadow: 0 4px 12px rgba(0,0,0,0.02);
  display: flex;
  flex-direction: column;
}
.module-card:hover {
  transform: translateY(-12px);
  box-shadow: var(--shadow-premium);
  border-color: var(--accent);
}

.card-tag {
  color: var(--accent);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}
.card-title {
  font-family: "Fraunces", serif;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.25rem;
}
.card-desc {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--ink-soft);
  flex: 1;
  margin-bottom: 2rem;
}
.card-footer {
  padding-top: 2rem;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 800;
  color: var(--accent);
}

/* ─── Locked State ─── */
.locked-view {
  grid-column: 1 / -1;
  text-align: center;
  padding: 8rem 2rem;
  background: rgba(255, 255, 255, 0.5);
  border: 3px dashed var(--line);
  border-radius: var(--r-card);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  transition: background 0.3s, border-color 0.3s;
}
.locked-title {
  font-family: "Fraunces", serif;
  font-size: 2.5rem;
  max-width: 600px;
}

/* ─── Upsell ─── */
.upsell-section {
  margin-top: 5rem;
  border-top: 2px solid var(--line);
  padding-top: 3rem;
}
.upsell-title {
  font-size: 0.9rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 2rem;
  letter-spacing: 0.1em;
}
.upsell-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}
.upsell-card {
  background: var(--accent-soft);
  padding: 2rem;
  border-radius: 24px;
  border: 1px solid var(--line);
  transition: background 0.3s;
}
.upsell-card-title { font-weight: 800; font-size: 1.1rem; margin-bottom: 0.75rem; }
.upsell-card-desc { font-size: 0.9rem; color: var(--ink-soft); line-height: 1.5; margin-bottom: 1.5rem; }
.upsell-card-link { font-weight: 800; color: var(--accent); text-decoration: none; }

/* ─── Loading ─── */
.loading .btn-open { opacity: 0.7; pointer-events: none; }

@media (max-width: 1024px) {
  .nav-bar { padding: 1.5rem 2rem; }
  .glass-panel { flex-direction: column; align-items: stretch; gap: 2rem; padding: 2rem; }
  .samples-box { border-left: none; border-top: 1px solid var(--line); padding-left: 0; padding-top: 2rem; }
  .center-banner { padding: 2rem; margin: 0 2rem 2rem; }
  .banner-title { font-size: 2rem; }
  .content-area { padding: 0 2rem 4rem; }
}

@media (max-width: 768px) {
  .nav-bar {
    flex-direction: column;
    gap: 1.5rem;
    padding: 1.5rem;
  }
  
  .nav-right {
    width: 100%;
    justify-content: space-between;
    gap: 0.5rem;
  }

  .nav-link, .btn-signout, .btn-billing {
    font-size: 0.75rem;
    padding: 0.4rem 0.8rem;
  }

  .input-row {
    flex-direction: column;
  }

  .btn-open {
    padding: 1rem;
    width: 100%;
  }

  .banner-title {
    font-size: 1.8rem;
  }

  .module-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .module-card {
    padding: 1.5rem;
    border-radius: 24px;
  }

  .card-title {
    font-size: 1.5rem;
  }
}