/* =========================================================
   WORD, SENTENCE & PARAGRAPH GENERATOR — style.css
   Author: Joshua Abefe
   Description: All visual styles for the generator app.
   ========================================================= */

/* ---------------------------------------------------------
   1. CSS VARIABLES (Design Tokens)
   --------------------------------------------------------- */
:root {
  /* Brand palette
     #EDAE49 — Golden Yellow  (warm highlight / accent)
     #D1495B — Crimson Rose   (call-to-action / active)
     #00798C — Teal           (primary UI colour)
     #30638E — Steel Blue     (secondary / buttons)
     #003D5B — Navy Deep      (dark base / text)
  */
  --golden:     #EDAE49;
  --crimson:    #D1495B;
  --teal:       #00798C;
  --steel:      #30638E;
  --navy:       #003D5B;

  /* Light mode tokens */
  --bg:         #e8f4f7;
  --bg-alt:     #d4ecf2;
  --card-bg:    #ffffff;
  --card-border:#00798C;
  --text:       #003D5B;
  --text-muted: #30638E;
  --btn-bg:     #30638E;
  --btn-text:   #ffffff;
  --btn-active-bg:  #D1495B;
  --btn-active-text:#ffffff;
  --btn-hover:  #EDAE49;
  --btn-hover-text: #003D5B;
  --accent:     #D1495B;
  --header-bg:  rgba(232, 244, 247, 0.88);
  --shadow:     0 4px 24px rgba(0, 61, 91, 0.10);
  --shadow-lg:  0 12px 48px rgba(0, 61, 91, 0.16);
  --radius:     16px;
  --radius-sm:  8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark mode overrides */
[data-theme="dark"] {
  --bg:         #003D5B;
  --bg-alt:     #002840;
  --card-bg:    #004d70;
  --card-border:#00798C;
  --text:       #e8f4f7;
  --text-muted: #89c8d4;
  --btn-bg:     #30638E;
  --btn-text:   #ffffff;
  --btn-active-bg:  #EDAE49;
  --btn-active-text:#003D5B;
  --btn-hover:  #D1495B;
  --btn-hover-text: #ffffff;
  --accent:     #EDAE49;
  --header-bg:  rgba(0, 61, 91, 0.92);
  --shadow:     0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg:  0 12px 48px rgba(0, 0, 0, 0.5);
}

/* ---------------------------------------------------------
   2. RESET & BASE
   --------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'DM Sans', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition), color var(--transition);
  /* Subtle dot-grid background texture */
  background-image: radial-gradient(circle, rgba(0,61,91,0.08) 1px, transparent 1px);
  background-size: 28px 28px;
}

[data-theme="dark"] body {
  background-image: radial-gradient(circle, rgba(0,121,140,0.1) 1px, transparent 1px);
  background-size: 28px 28px;
}

/* ---------------------------------------------------------
   3. HEADER
   --------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(33, 158, 188, 0.3);
  transition: background var(--transition);
}

.header-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

/* Clock */
.clock-block {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-muted);
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.clock-icon {
  font-size: 1rem;
  color: var(--accent);
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #D1495B;
  box-shadow: 0 0 0 3px rgba(209, 73, 91, 0.25);
  animation: pulse-dot 2.5s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 3px rgba(209, 73, 91, 0.25); }
  50%       { box-shadow: 0 0 0 6px rgba(209, 73, 91, 0.1); }
}

.brand-name {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

/* Theme toggle */
.theme-toggle-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.toggle-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  min-width: 32px;
  text-align: right;
}

.theme-toggle {
  position: relative;
  width: 48px;
  height: 26px;
  border-radius: 99px;
  background: var(--card-border);
  border: none;
  cursor: pointer;
  transition: background var(--transition);
  flex-shrink: 0;
}

[data-theme="dark"] .theme-toggle {
  background: #EDAE49;
}

.toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #ffffff;
  transition: transform var(--transition), background var(--transition);
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

[data-theme="dark"] .toggle-thumb {
  transform: translateX(22px);
  background: #003D5B;
}

/* ---------------------------------------------------------
   4. HERO SECTION
   --------------------------------------------------------- */
.hero {
  max-width: 900px;
  margin: 0 auto;
  padding: 64px 24px 40px;
  text-align: center;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #D1495B;
  background: rgba(209, 73, 91, 0.1);
  padding: 4px 14px;
  border-radius: 99px;
  margin-bottom: 20px;
  border: 1px solid rgba(209, 73, 91, 0.25);
}

.hero-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 800;
  line-height: 1.05;
  color: var(--text);
  letter-spacing: -0.04em;
  margin-bottom: 20px;
}

.hero-accent {
  color: var(--accent);
  -webkit-text-stroke: 0px;
  position: relative;
  display: inline-block;
}

.hero-accent::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 100%;
  height: 4px;
  background: #EDAE49;
  border-radius: 2px;
  opacity: 0.7;
}

.hero-sub {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 460px;
  margin: 0 auto;
  line-height: 1.65;
  font-weight: 300;
}

/* ---------------------------------------------------------
   5. MAIN CONTENT
   --------------------------------------------------------- */
.main-content {
  flex: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px 48px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ----- Controls Section ----- */
.controls-section {
  width: 100%;
}

.controls-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.controls-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.btn-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.gen-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 12px;
  background: var(--btn-bg);
  color: var(--btn-text);
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.gen-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--btn-hover);
  opacity: 0;
  transition: opacity var(--transition);
}

.gen-btn:hover::before {
  opacity: 1;
}

.gen-btn:hover {
  color: var(--btn-hover-text);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 61, 91, 0.18);
  border-color: var(--btn-hover);
}

.gen-btn:active {
  transform: translateY(0);
}

.gen-btn.active {
  background: var(--btn-active-bg);
  color: var(--btn-active-text);
  border-color: var(--btn-active-bg);
  box-shadow: 0 4px 16px rgba(209, 73, 91, 0.3);
}

.gen-btn.active::before {
  display: none;
}

.btn-icon {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1rem;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  transition: background var(--transition);
}

.gen-btn.active .btn-icon {
  background: rgba(237, 174, 73, 0.25);
}

.btn-text {
  position: relative;
  z-index: 1;
}

/* ----- Output Section ----- */
.output-section {
  width: 100%;
}

.output-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.output-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid rgba(0, 121, 140, 0.2);
  background: rgba(0, 121, 140, 0.06);
}

.output-type-badge {
  font-family: 'Syne', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #00798C;
  background: rgba(0, 121, 140, 0.12);
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid rgba(0, 121, 140, 0.3);
  transition: all var(--transition);
}

.output-actions {
  display: flex;
  gap: 8px;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--card-border);
  background: transparent;
  color: var(--text-muted);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}

.action-btn:hover {
  background: #EDAE49;
  color: #003D5B;
  border-color: #EDAE49;
  transform: translateY(-1px);
}

.action-btn svg {
  flex-shrink: 0;
}

.generate-again-btn:hover svg {
  animation: spin 0.5s ease-in-out;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* Output body */
.output-body {
  padding: 36px 32px;
  min-height: 180px;
  display: flex;
  align-items: center;
}

.output-text {
  font-family: 'DM Sans', sans-serif;
  font-size: 1.35rem;
  font-weight: 300;
  line-height: 1.75;
  color: var(--text);
  font-style: italic;
  letter-spacing: 0.01em;
  transition: opacity 0.25s ease, transform 0.25s ease;
  width: 100%;
}

/* Animation class toggled by JS when text updates */
.output-text.fade-in {
  animation: textReveal 0.4s ease forwards;
}

@keyframes textReveal {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Placeholder state */
.output-text.placeholder {
  color: var(--text-muted);
  font-style: normal;
  font-size: 1rem;
  font-weight: 400;
}

/* Output footer */
.output-footer {
  padding: 12px 24px;
  border-top: 1px solid rgba(0, 121, 140, 0.15);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
}

.copy-toast {
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 500;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.copy-toast.show {
  opacity: 1;
}

.char-count {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: 'Syne', monospace;
  font-weight: 600;
  letter-spacing: 0.04em;
}

/* ----- Stats Section ----- */
.stats-section {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.stat-pill {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}

.stat-pill:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: #EDAE49;
}

.stat-num {
  display: block;
  font-family: 'Syne', sans-serif;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-desc {
  display: block;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ---------------------------------------------------------
   6. FOOTER
   --------------------------------------------------------- */
.site-footer {
  margin-top: auto;
  background: #003D5B;
  color: #e8f4f7;
  padding: 28px 24px;
  text-align: center;
  transition: background var(--transition);
}

[data-theme="dark"] .site-footer {
  background: #001f2e;
  border-top: 1px solid rgba(0, 121, 140, 0.2);
}

.footer-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-copy {
  font-size: 0.8rem;
  opacity: 0.7;
  font-weight: 300;
}

.footer-dev {
  font-size: 0.85rem;
  font-weight: 400;
}

.footer-link {
  color: #EDAE49;
  text-decoration: none;
  font-weight: 600;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}

.footer-link:hover {
  color: #D1495B;
  border-bottom-color: #D1495B;
}

/* ---------------------------------------------------------
   7. RESPONSIVE — TABLET (≤768px)
   --------------------------------------------------------- */
@media (max-width: 768px) {
  .header-inner {
    padding: 0 16px;
  }

  /* Hide full datetime on small screens */
  .clock-block {
    font-size: 0.72rem;
  }

  .hero {
    padding: 40px 20px 28px;
  }

  .hero-title {
    font-size: clamp(2rem, 10vw, 3.5rem);
  }

  .main-content {
    padding: 0 16px 40px;
    gap: 20px;
  }

  .controls-card {
    padding: 20px;
  }

  .btn-group {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .gen-btn {
    padding: 14px 16px;
  }

  .output-body {
    padding: 28px 20px;
    min-height: 140px;
  }

  .output-text {
    font-size: 1.1rem;
  }

  .stats-section {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }

  .stat-pill {
    padding: 14px 10px;
  }

  .stat-num {
    font-size: 1.35rem;
  }

  .stat-desc {
    font-size: 0.65rem;
  }
}

/* ---------------------------------------------------------
   8. RESPONSIVE — MOBILE (≤480px)
   --------------------------------------------------------- */
@media (max-width: 480px) {
  /* Compact clock on mobile */
  #datetime-display {
    display: none;
  }

  .clock-block::after {
    content: attr(data-time);
  }

  .brand-name {
    font-size: 1.1rem;
  }

  .toggle-label {
    display: none;
  }

  .output-header {
    padding: 12px 16px;
    flex-wrap: wrap;
    gap: 8px;
  }

  .action-btn span {
    display: none;
  }

  .action-btn {
    padding: 7px 10px;
  }

  .output-body {
    padding: 24px 16px;
  }

  .output-text {
    font-size: 1rem;
  }

  .stats-section {
    grid-template-columns: repeat(3, 1fr);
  }

  .output-footer {
    padding: 10px 16px;
  }
}

/* ---------------------------------------------------------
   9. UTILITY CLASSES
   --------------------------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}