/* =========================================================
   AI WCAG HTML Optimizer - Custom Theme
   Bootstrap 5.3 Override Theme
   File: custom.css
   ========================================================= */

/* =========================
   Root Color Variables
   ========================= */
:root {

  /* Primary Brand */
  --ai-primary: #0B7C8C;
  --ai-primary-dark: #075C67;
  --ai-primary-light: #2DB7C8;

  /* Secondary */
  --ai-secondary: #5F6F82;
  --ai-secondary-light: #DCE6EA;

  /* Accent */
  --ai-accent-green: #27B36A;
  --ai-accent-blue: #3B82F6;
  --ai-accent-purple: #8B5CF6;

  /* Background */
  --ai-bg-body: #F5FAFB;
  --ai-bg-soft: #EEF6F7;
  --ai-bg-card: #FFFFFF;

  /* Typography */
  --ai-text-main: #102A43;
  --ai-text-sub: #52667A;
  --ai-text-light: #7B8A97;

  /* Border / Shadow */
  --ai-border: #D7E4E8;
  --ai-shadow: rgba(16, 42, 67, 0.08);

  /* Footer */
  --ai-footer-bg: linear-gradient(
    90deg,
    #087989 0%,
    #0B7C8C 50%,
    #1FA5B5 100%
  );

  /* Link */
  --ai-link: #0B7C8C;
  --ai-link-hover: #075C67;

  /* Bootstrap Override */
  --bs-primary: #0B7C8C;
  --bs-secondary: #5F6F82;
  --bs-success: #27B36A;
  --bs-info: #2DB7C8;
  --bs-body-bg: #F5FAFB;
  --bs-body-color: #102A43;
  --bs-border-color: #D7E4E8;
}

/* =========================================================
   Global
   ========================================================= */

body {
  background: #fff;
  color: var(--ai-text-main);
  font-family:
    "Noto Sans TC",
    "Segoe UI",
    sans-serif;
  line-height: 1.7;
}

/* =========================================================
   Top Bar
   ========================================================= */

#top-bar, .topbar {
  background: linear-gradient(
    90deg,
    #0B7C8C,
    #1296A5
  );
  color: #ffffff;
  font-size: 0.92rem;
  padding: 8px 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

#top-bar a,
.topbar a {
  color: #ffffff;
  text-decoration: none;
}

#top-bar a:hover,
.topbar a:hover {
  opacity: 0.85;
}

/* =========================================================
   Header / Navbar
   ========================================================= */

.navbar,
.site-header {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ai-border);
  box-shadow: 0 4px 20px var(--ai-shadow);
}

.navbar-brand {
  color: var(--ai-primary-dark);
  font-weight: 800;
  letter-spacing: 0.5px;
}

.navbar-brand:hover {
  color: var(--ai-primary);
}

.nav-link {
  color: var(--ai-text-main);
  font-weight: 600;
  transition: all 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--ai-primary);
}

/* =========================================================
   Main Content / Body
   ========================================================= */

.main-content {
  padding: 60px 0;
}

.section-title {
  color: var(--ai-text-main);
  font-weight: 800;
  margin-bottom: 16px;
}

.section-subtitle {
  color: var(--ai-text-sub);
  font-size: 1.05rem;
}

/* =========================================================
   Cards
   ========================================================= */

.card {
  background: var(--ai-bg-card);
  border: 1px solid var(--ai-border);
  border-radius: 20px;
  box-shadow: 0 8px 30px var(--ai-shadow);
  transition: all 0.25s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(11, 124, 140, 0.12);
}

.card-title {
  color: var(--ai-text-main);
  font-weight: 700;
}

.card-text {
  color: var(--ai-text-sub);
}

/* =========================================================
   Buttons
   ========================================================= */

.btn-primary {
  background: linear-gradient(
    135deg,
    #0B7C8C,
    #1296A5
  );
  border: none;
  border-radius: 12px;
  padding: 10px 22px;
  font-weight: 700;
}

.btn-primary:hover {
  background: linear-gradient(
    135deg,
    #086A77,
    #0B7C8C
  );
  transform: translateY(-1px);
}

.btn-outline-primary {
  border-color: var(--ai-primary);
  color: var(--ai-primary);
  border-radius: 12px;
  font-weight: 600;
}

.btn-outline-primary:hover {
  background: var(--ai-primary);
  color: #ffffff;
}

/* =========================================================
   Forms
   ========================================================= */

.form-control,
.form-select {
  border-radius: 14px;
  border: 1px solid var(--ai-border);
  padding: 12px 14px;
  background: #ffffff;
}

.form-control:focus,
.form-select:focus {
  border-color: var(--ai-primary-light);
  box-shadow: 0 0 0 0.2rem rgba(11,124,140,0.15);
}

/* =========================================================
   Tables
   ========================================================= */

.table {
  border-color: var(--ai-border);
}

.table thead {
  background: var(--ai-bg-soft);
}

.table th {
  color: var(--ai-primary-dark);
  font-weight: 700;
}

.table-hover tbody tr:hover {
  background: rgba(11,124,140,0.04);
}

/* =========================================================
   Link Style
   ========================================================= */

a {
  color: var(--ai-link);
  text-decoration: none;
  transition: all 0.2s ease;
}

a:hover {
  color: var(--ai-link-hover);
  text-decoration: underline;
}

/* =========================================================
   Footer
   ========================================================= */

footer,
.site-footer {
  background: var(--ai-footer-bg);
  color: #ffffff;
  padding: 60px 0 30px;
  margin-top: 80px;
}

footer h5,
footer h6 {
  color: #ffffff;
  font-weight: 700;
}

footer p,
footer li,
footer span {
  color: rgba(255,255,255,0.85);
}

footer a {
  color: #ffffff;
}

footer a:hover {
  color: #DFFBFF;
}

/* =========================================================
   Utility Classes
   ========================================================= */

.bg-soft {
  background: var(--ai-bg-soft);
}

.text-main {
  color: var(--ai-text-main);
}

.text-sub {
  color: var(--ai-text-sub);
}

.border-soft {
  border-color: var(--ai-border) !important;
}

.shadow-soft {
  box-shadow: 0 8px 30px var(--ai-shadow);
}

/* =========================================================
   Accessibility Enhancement
   ========================================================= */

:focus-visible {
  outline: 3px solid rgba(11,124,140,0.35);
  outline-offset: 2px;
}

::selection {
  background: rgba(11,124,140,0.18);
  color: var(--ai-text-main);
}
/* =========================================================
   Typography / Content Colors
   ========================================================= */

/* Main Heading */
h1,
.h1 {
  color: var(--ai-primary-dark);
  font-weight: 800;
  line-height: 1.25;
}

/* Section Headings */
h2,
.h2 {
  color: var(--ai-primary);
  font-weight: 750;
  line-height: 1.3;
  margin-bottom: 1rem;
}

/* Sub Headings */
h3,
.h3 {
  color: var(--ai-text-main);
  font-weight: 700;
  line-height: 1.35;
}

/* Minor Headings */
h4,
.h4,
h5,
.h5,
h6,
.h6 {
  color: var(--ai-text-sub);
  font-weight: 650;
  line-height: 1.4;
}

/* Paragraph / General Text */
p,
span,
li,
label,
td,
th,
div {
  color: var(--ai-text-main);
}

/* Small Text */
small,
.small,
.text-muted {
  color: var(--ai-text-light) !important;
}

/* Content Area */
.content,
.article-content,
.editor-content {
  color: var(--ai-text-main);
  font-size: 1rem;
  line-height: 1.85;
}

/* Content Links */
.content a,
.article-content a,
.editor-content a,
p a,
li a {
  color: var(--ai-link);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: rgba(11,124,140,0.35);
  text-underline-offset: 3px;
}

.content a:hover,
.article-content a:hover,
.editor-content a:hover,
p a:hover,
li a:hover {
  color: var(--ai-link-hover);
  text-decoration-color: var(--ai-link-hover);
}

/* Accessibility Contrast Enhancement */
.text-secondary {
  color: var(--ai-text-sub) !important;
}

.text-light {
  color: var(--ai-text-light) !important;
}
footer h1,
footer h2,
footer h3,
footer h4,
footer h5,
footer h6, footer a:link, footer a:visited {
  color: #ffffff;
}

.privacy-page {
    --brand-1: #0f766e;
    --brand-2: #155e75;
    --brand-3: #f0fdfa;
    --ink-1: #0f172a;
    --ink-2: #334155;
    --line: rgba(15, 23, 42, 0.08);
    --glow: rgba(21, 94, 117, 0.18);
    background:
      radial-gradient(circle at top right, rgba(20, 184, 166, 0.16), transparent 28%),
      radial-gradient(circle at left 20%, rgba(14, 165, 233, 0.12), transparent 24%),
      linear-gradient(180deg, #f8fffe 0%, #f6fbff 100%);
    color: var(--ink-1);
  }

  .privacy-hero {
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.4);
    background:
      linear-gradient(135deg, rgba(15,118,110,0.96), rgba(21,94,117,0.94)),
      linear-gradient(180deg, #0f766e 0%, #155e75 100%);
    box-shadow: 0 30px 80px var(--glow);
  }

  .privacy-hero::after {
    content: "";
    position: absolute;
    inset: auto -10% -30% auto;
    width: 360px;
    height: 360px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,0.18), transparent 65%);
    pointer-events: none;
  }

  .privacy-card {
    border: 1px solid var(--line);
    border-radius: 1.25rem;
    background: rgba(255,255,255,0.9);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.06);
    backdrop-filter: blur(6px);
  }

  .privacy-chip {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .55rem .9rem;
    border-radius: 999px;
    background: rgba(255,255,255,0.14);
    border: 1px solid rgba(255,255,255,0.18);
    color: #fff;
    font-size: .95rem;
  }

  .privacy-section-title {
    letter-spacing: .02em;
    font-weight: 800;
    color: var(--ink-1);
  }

  .privacy-kv {
    border-left: 4px solid var(--brand-1);
    background: linear-gradient(180deg, rgba(240,253,250,0.92), rgba(255,255,255,0.96));
  }

  .privacy-table thead th {
    background: #ecfeff;
    color: #0f172a;
    border-bottom: 0;
  }

  .privacy-table td,
  .privacy-table th {
    vertical-align: middle;
    border-color: rgba(15, 23, 42, 0.08);
  }

  .privacy-note {
    background: linear-gradient(135deg, #fff7ed, #fffbeb);
    border: 1px solid rgba(245, 158, 11, 0.22);
  }

  .privacy-footer-box {
    background: linear-gradient(135deg, #0f172a, #1e293b);
    color: #e2e8f0;
  }

  .privacy-icon {
    width: 3rem;
    height: 3rem;
    display: inline-grid;
    place-items: center;
    border-radius: 1rem;
    background: linear-gradient(135deg, rgba(15,118,110,0.12), rgba(14,165,233,0.12));
    color: var(--brand-2);
    font-size: 1.25rem;
    flex-shrink: 0;
  }

  .accordion-button:not(.collapsed) {
    color: var(--ink-1);
    background: #f0fdfa;
    box-shadow: none;
  }

  .accordion-button:focus {
    box-shadow: 0 0 0 .25rem rgba(20, 184, 166, 0.18);
  }

  @media (max-width: 767.98px) {
    .privacy-hero .display-5 {
      font-size: 2rem;
    }
  }