/* style.css - Global Stylesheet for Langomind */

/* Reset & Variables */
:root {
  /* Light Mode (Default - Eye Comfort Warm Alabaster) */
  --bg-primary: #FAF9F5;
  --bg-secondary: #FFFFFF;
  --bg-input: #F3F1EA;
  --bg-navbar: rgba(250, 249, 245, 0.92);
  
  --text-primary: #1C2024;
  --text-muted: #5E646E;
  
  --accent-primary: #4F46E5;
  --accent-hover: #4338CA;
  --accent-success: #059669;
  --accent-error: #DC2626;
  --accent-orange: #D97706;
  --accent-blue: #0284C7;
  
  --border-radius-sm: 6px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
  
  --border-color: rgba(120, 110, 90, 0.12);
  --border-glow: rgba(79, 70, 229, 0.15);
  
  --select-arrow-url: url("data:image/svg+xml;utf8,<svg fill='%235e646e' height='24' viewBox='0 0 24 24' width='24' xmlns='http://www.w3.org/2000/svg'><path d='M7 10l5 5 5-5z'/><path d='M0 0h24v24H0z' fill='none'/></svg>");
  
  --alert-success-bg: rgba(5, 150, 105, 0.06);
  --alert-success-border: rgba(5, 150, 105, 0.15);
  --alert-success-text: #047857;
  
  --alert-error-bg: rgba(220, 38, 38, 0.06);
  --alert-error-border: rgba(220, 38, 38, 0.15);
  --alert-error-text: #B91C1C;
  
  --nav-link-hover-bg: rgba(120, 110, 90, 0.06);
  
  --font-tajawal: 'Tajawal', sans-serif;
  --font-inter: 'Inter', sans-serif;
  --font-amiri: 'Amiri', serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --bg-texture-color: rgba(31, 42, 36, 0.004);
}

html[data-theme="dark"] {
  /* Dark Mode */
  --bg-primary: #0F172A;
  --bg-secondary: #1E293B;
  --bg-input: #273347;
  --bg-navbar: rgba(15, 23, 42, 0.92);
  
  --text-primary: #F8FAFC;
  --text-muted: #64748B;
  
  --accent-primary: #818CF8;
  --accent-hover: #A5B4FC;
  --accent-success: #10B981;
  --accent-error: #EF4444;
  --accent-orange: #FB923C;
  --accent-blue: #38BDF8;
  
  --border-color: rgba(100, 116, 139, 0.22);
  --border-glow: rgba(129, 140, 248, 0.3);
  
  --select-arrow-url: url("data:image/svg+xml;utf8,<svg fill='%23f8fafc' height='24' viewBox='0 0 24 24' width='24' xmlns='http://www.w3.org/2000/svg'><path d='M7 10l5 5 5-5z'/><path d='M0 0h24v24H0z' fill='none'/></svg>");
  
  --alert-success-bg: rgba(16, 185, 129, 0.1);
  --alert-success-border: rgba(16, 185, 129, 0.3);
  --alert-success-text: #6EE7B7;
  
  --alert-error-bg: rgba(239, 68, 68, 0.1);
  --alert-error-border: rgba(239, 68, 68, 0.3);
  --alert-error-text: #F87171;
  
  --nav-link-hover-bg: rgba(255, 255, 255, 0.05);
  --bg-texture-color: rgba(248, 250, 252, 0.004);
}


* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-tajawal);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: radial-gradient(var(--bg-texture-color) 1px, transparent 1px);
  background-size: 16px 16px;
  pointer-events: none;
  z-index: 0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  color: var(--text-primary);
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--accent-hover);
}

/* Layout Elements */
.container {
  padding: 20px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.center-card-layout {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

/* Navbar */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  border-bottom: 0.5px solid var(--border-color);
  background: var(--bg-navbar);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background 0.3s ease, border-color 0.3s ease;
}

/* Logo Langomind style */
:root {
  --logo-l: #D97706; /* Elegant amber gold matching the comfort theme */
}

html[data-theme="dark"] {
  --logo-l: #FB923C; /* Vibrant warm gold for dark theme */
}

.logo {
  display: inline-flex;
  align-items: baseline;
  font-family: var(--font-inter), system-ui, -apple-system, sans-serif;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.02em;
  cursor: pointer;
  user-select: none;
  line-height: 1;
  color: var(--text-primary);
  direction: ltr !important; /* Force Left-to-Right to fix Arabic/RTL reversal */
}

.logo .l {
  color: var(--logo-l);
  border-bottom: 2.5px solid var(--logo-l);
  margin-right: 0.5px;
  padding-bottom: 1px;
}

.nav-links {
  display: flex;
  gap: 4px;
}

.nav-link {
  padding: 5px 10px;
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--border-radius-sm);
  border: none;
  background: none;
  font-family: var(--font-tajawal);
  transition: all 0.15s ease;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--nav-link-hover-bg);
}

.nav-link.active {
  color: var(--text-primary);
  background: var(--bg-input);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Language Toggle */
.lang-toggle {
  display: flex;
  background: var(--bg-secondary);
  border: 0.5px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 3px;
  gap: 2px;
}

.lang-btn {
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  background: none;
  color: var(--text-muted);
  transition: all 0.15s ease;
}

.lang-btn.active {
  background: var(--accent-primary);
  color: var(--bg-primary);
}

.lang-btn-en {
  font-family: var(--font-inter);
}

.lang-btn-ar {
  font-family: var(--font-tajawal);
}

/* Cards */
.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 24px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02), 0 2px 4px -1px rgba(0, 0, 0, 0.01);
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease, transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-primary);
  box-shadow: 0 12px 24px -8px var(--border-glow);
}

.card-hover:hover {
  border-color: var(--accent-primary);
  cursor: pointer;
}

/* Scroll Reveal Animations */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.215, 0.610, 0.355, 1), transform 0.7s cubic-bezier(0.215, 0.610, 0.355, 1);
}

.reveal.reveal-active {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.40s; }
.reveal-delay-6 { transition-delay: 0.48s; }

/* Buttons */
.btn {
  background-color: var(--accent-primary);
  color: var(--bg-primary);
  font-weight: 600;
  border: none;
  border-radius: var(--border-radius-md);
  padding: 10px 20px;
  font-size: 13px;
  cursor: pointer;
  font-family: var(--font-tajawal);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: opacity 0.15s ease;
}

.btn:hover {
  opacity: 0.9;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-secondary {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 0.5px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--bg-input);
}

.btn-danger {
  background-color: rgba(239, 68, 68, 0.08);
  color: #F87171;
  border: 0.5px solid rgba(239, 68, 68, 0.25);
}

.btn-danger:hover {
  background-color: rgba(239, 68, 68, 0.15);
}

.btn-sm {
  padding: 5px 12px;
  font-size: 11px;
}

.btn-lg {
  padding: 12px 28px;
  font-size: 15px;
}

/* Form Controls */
.form-group {
  margin-bottom: 14px;
}

.form-label {
  font-size: 12px;
  color: var(--text-muted);
  display: block;
  margin-bottom: 5px;
}

.form-input {
  width: 100%;
  background-color: var(--bg-input);
  border: 0.5px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-primary);
  outline: none;
  font-family: var(--font-tajawal);
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.form-input:focus {
  border-color: var(--accent-primary);
}

.form-input.direction-ltr {
  direction: ltr;
}

textarea.form-input {
  resize: vertical;
}

select.form-input {
  cursor: pointer;
  appearance: none;
  background-image: var(--select-arrow-url);
  background-repeat: no-repeat;
  background-position: left 8px center;
  padding-left: 30px;
}

html[dir="ltr"] select.form-input {
  background-position: right 8px center;
  padding-right: 30px;
  padding-left: 14px;
}

/* Grids */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

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

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Alert Boxes */
.alert {
  border-radius: var(--border-radius-md);
  padding: 10px 14px;
  font-size: 13px;
  margin-bottom: 12px;
}

.alert-success {
  background: var(--alert-success-bg);
  border: 0.5px solid var(--alert-success-border);
  color: var(--alert-success-text);
}

.alert-error {
  background: var(--alert-error-bg);
  border: 0.5px solid var(--alert-error-border);
  color: var(--alert-error-text);
}

/* CEFR Badges */
.cefr-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(129, 140, 248, 0.1);
  display: inline-block;
}

/* Typewriter / Live Demo Box */
.typewriter-container {
  background-color: var(--bg-secondary);
  border: 0.5px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 20px 24px;
  width: 100%;
  text-align: left;
  direction: ltr;
}

.typewriter-container.active-border {
  border-color: var(--border-glow);
}

.typewriter-label {
  font-size: 10px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-bottom: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.typewriter-text {
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.8;
  outline: none;
  min-height: 28px;
}

.char-default {
  color: var(--text-muted);
}

.char-correct {
  color: var(--accent-success);
}

.char-error {
  color: var(--accent-error);
  text-decoration: underline wavy;
}

.char-cursor {
  border-left: 2px solid #38BDF8;
  animation: blink 1s step-end infinite;
}

/* Animations */
@keyframes blink {
  from, to { border-color: transparent }
  50% { border-color: #38BDF8 }
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all 0.3s ease;
  width: 34px;
  height: 34px;
  user-select: none;
}

.theme-toggle-btn:hover {
  background: var(--nav-link-hover-bg);
  color: var(--text-primary);
  transform: scale(1.1);
}

.theme-toggle-btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
  transition: transform 0.3s ease;
}

/* Profile Avatar Button */
.profile-avatar-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all 0.3s ease;
  width: 34px;
  height: 34px;
  user-select: none;
}

.profile-avatar-btn:hover, .profile-avatar-btn.active {
  background: var(--nav-link-hover-bg);
  color: var(--text-primary);
  transform: scale(1.1);
}

.profile-avatar-btn svg {
  width: 18px;
  height: 18px;
  transition: transform 0.3s ease;
}