/* =============================================================
   STEAM CRON STUDIO — Design System
   Steam-inspired dark theme with Arabic RTL support
   ============================================================= */

@import url('https://fonts.googleapis.com/css2?family=Tajawal:wght@400;500;700;800&family=Amiri:wght@400;700&family=Inter:wght@400;600;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── CSS Custom Properties ─────────────────────────────────── */
:root {
  /* Backgrounds */
  --bg-start:    #1b2838;
  --bg-end:      #2a475e;
  --bg-deep:     #171a21;
  --bg-card:     rgba(23, 44, 66, 0.85);
  --bg-card-hover: rgba(30, 58, 85, 0.95);
  --bg-overlay:  rgba(0, 0, 0, 0.6);

  /* Borders */
  --border-card: rgba(102, 192, 244, 0.2);
  --border-gold: rgba(199, 160, 8, 0.4);
  --border-active: #66c0f4;

  /* Accent Colors */
  --accent-blue:  #66c0f4;
  --accent-gold:  #c7a008;
  --accent-green: #5c7e10;
  --accent-red:   #a94442;
  --accent-fire:  #ff6b35;
  --accent-purple:#7b68ee;

  /* Text */
  --text-primary:   #c7d5e0;
  --text-secondary: #8f98a0;
  --text-white:     #ffffff;
  --text-gold:      #c7a008;
  --text-blue:      #66c0f4;

  /* Fonts */
  --font-arabic:  'Tajawal', 'Amiri', sans-serif;
  --font-display: 'Amiri', serif;
  --font-latin:   'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  /* Spacing */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  40px;
  --space-2xl: 64px;

  /* Border Radius */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  18px;
  --radius-xl:  28px;
  --radius-pill:100px;

  /* Shadows */
  --shadow-sm:   0 2px 8px rgba(0,0,0,0.3);
  --shadow-md:   0 6px 20px rgba(0,0,0,0.4);
  --shadow-lg:   0 12px 40px rgba(0,0,0,0.55);
  --shadow-gold: 0 0 20px rgba(199,160,8,0.25);
  --shadow-blue: 0 0 20px rgba(102,192,244,0.2);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --nav-height: 64px;
  --sidebar-width: 300px;
  --content-max: 1200px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-arabic);
  background: linear-gradient(135deg, var(--bg-start) 0%, var(--bg-end) 60%, #1e3a50 100%);
  min-height: 100vh;
  color: var(--text-primary);
  line-height: 1.6;
  direction: rtl;
  overflow-x: hidden;
}

body.lang-en {
  direction: ltr;
  font-family: var(--font-latin);
}

/* Background pattern */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(102,192,244,0.05) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(199,160,8,0.04) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* ── Typography ─────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-white);
  line-height: 1.3;
  font-weight: 700;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.2rem; }

p { color: var(--text-primary); margin-bottom: var(--space-md); }
p:last-child { margin-bottom: 0; }

a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--text-white); }

code, pre {
  font-family: var(--font-mono);
  font-size: 0.875em;
}

pre {
  background: var(--bg-deep);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  overflow-x: auto;
  color: var(--accent-blue);
  line-height: 1.7;
}

/* ── Layout Utilities ───────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.main {
  position: relative;
  z-index: 1;
  padding-top: var(--nav-height);
}

.grid { display: grid; gap: var(--space-lg); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-gap-sm { gap: var(--space-sm); }
.flex-gap-md { gap: var(--space-md); }
.flex-gap-lg { gap: var(--space-lg); }
.flex-wrap { flex-wrap: wrap; }

.text-center { text-align: center; }
.text-start  { text-align: start; }
.text-end    { text-align: end; }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(23, 26, 33, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-card);
  z-index: 100;
  display: flex;
  align-items: center;
  padding: 0 var(--space-xl);
  gap: var(--space-xl);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--text-white);
  flex-shrink: 0;
}

.nav-brand img { width: 36px; height: 36px; }

.nav-brand span { color: var(--accent-gold); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex: 1;
  list-style: none;
}

.nav-links a {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 6px var(--space-md);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-white);
  background: rgba(102, 192, 244, 0.1);
}

.nav-links a.active {
  color: var(--accent-blue);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-right: auto;
}

body.lang-en .nav-actions { margin-right: 0; margin-left: auto; }

.lang-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-pill);
  padding: 4px var(--space-sm);
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-family: var(--font-latin);
  transition: all var(--transition-fast);
}
.lang-toggle:hover { border-color: var(--accent-blue); color: var(--text-white); }

/* ── Cards ──────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-base);
  backdrop-filter: blur(8px);
}

.card:hover {
  border-color: rgba(102, 192, 244, 0.4);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-gold {
  border-color: var(--border-gold);
}
.card-gold:hover { border-color: var(--accent-gold); box-shadow: var(--shadow-gold); }

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 10px var(--space-lg);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-family: var(--font-arabic);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
}

.btn-lg {
  padding: 14px var(--space-xl);
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: 6px var(--space-md);
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-primary {
  background: var(--accent-blue);
  color: var(--bg-deep);
  border-color: var(--accent-blue);
  font-weight: 700;
}
.btn-primary:hover {
  background: #7dcef7;
  color: var(--bg-deep);
  box-shadow: var(--shadow-blue);
  transform: translateY(-1px);
}

.btn-gold {
  background: var(--accent-gold);
  color: var(--bg-deep);
  border-color: var(--accent-gold);
  font-weight: 700;
}
.btn-gold:hover {
  background: #d4aa0c;
  box-shadow: var(--shadow-gold);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-card);
}
.btn-ghost:hover {
  border-color: var(--accent-blue);
  color: var(--text-white);
  background: rgba(102, 192, 244, 0.08);
}

.btn-danger {
  background: rgba(169,68,66,0.15);
  color: var(--accent-red);
  border-color: rgba(169,68,66,0.3);
}
.btn-danger:hover { background: rgba(169,68,66,0.25); }

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
}

/* ── Form Elements ──────────────────────────────────────────── */
.form-group { margin-bottom: var(--space-lg); }

.form-label {
  display: block;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px var(--space-md);
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  color: var(--text-white);
  font-family: var(--font-arabic);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast);
  outline: none;
  direction: inherit;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(102,192,244,0.15);
}

.form-input::placeholder { color: var(--text-secondary); opacity: 0.6; }

.form-textarea { resize: vertical; min-height: 100px; }

.form-select {
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238f98a0' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: left 12px center;
  padding-left: 32px;
}

body[dir="rtl"] .form-select {
  background-position: right 12px center;
  padding-right: 32px;
  padding-left: var(--space-md);
}

.form-check {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent-blue);
  cursor: pointer;
}

/* Range input */
.form-range {
  width: 100%;
  accent-color: var(--accent-blue);
  cursor: pointer;
}

/* ── Badges & Tags ──────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
}

.badge-blue   { background: rgba(102,192,244,0.15); color: var(--accent-blue); border: 1px solid rgba(102,192,244,0.3); }
.badge-gold   { background: rgba(199,160,8,0.15);   color: var(--accent-gold); border: 1px solid rgba(199,160,8,0.3); }
.badge-green  { background: rgba(92,126,16,0.2);    color: #8fb940;            border: 1px solid rgba(92,126,16,0.4); }
.badge-red    { background: rgba(169,68,66,0.2);    color: #d4706e;            border: 1px solid rgba(169,68,66,0.4); }
.badge-fire   { background: rgba(255,107,53,0.15);  color: var(--accent-fire); border: 1px solid rgba(255,107,53,0.3); }
.badge-gray   { background: rgba(143,152,160,0.15); color: var(--text-secondary); border: 1px solid rgba(143,152,160,0.3); }

/* ── Toggle Switch ──────────────────────────────────────────── */
.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

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

.toggle-track {
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-card);
  cursor: pointer;
  transition: all var(--transition-base);
}

.toggle-track::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--text-secondary);
  top: 2px;
  right: 2px;
  transition: all var(--transition-base);
}

body[dir="rtl"] .toggle-track::after { right: auto; left: 2px; }

input:checked + .toggle-track {
  background: rgba(102,192,244,0.2);
  border-color: var(--accent-blue);
}

input:checked + .toggle-track::after {
  background: var(--accent-blue);
  right: auto;
  left: 2px;
}

body[dir="rtl"] input:checked + .toggle-track::after {
  left: auto;
  right: 2px;
}

/* ── Tabs ───────────────────────────────────────────────────── */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--border-card);
  gap: 2px;
  overflow-x: auto;
}

.tab-btn {
  padding: var(--space-sm) var(--space-lg);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-family: var(--font-arabic);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  margin-bottom: -1px;
}

.tab-btn:hover { color: var(--text-white); }

.tab-btn.active {
  color: var(--accent-blue);
  border-bottom-color: var(--accent-blue);
}

.tab-pane { display: none; animation: fadeIn 200ms ease; }
.tab-pane.active { display: block; }

/* ── Progress Steps ─────────────────────────────────────────── */
.steps {
  display: flex;
  align-items: center;
  gap: 0;
  padding: var(--space-lg) 0;
}

.step {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex: 1;
}

.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--border-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-secondary);
  background: var(--bg-card);
  flex-shrink: 0;
  transition: all var(--transition-base);
}

.step.active .step-num {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  background: rgba(102,192,244,0.1);
}

.step.done .step-num {
  border-color: var(--accent-green);
  background: rgba(92,126,16,0.2);
  color: #8fb940;
}

.step-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  flex: 1;
}

.step.active .step-label { color: var(--text-primary); }

.step-line {
  flex: 1;
  height: 1px;
  background: var(--border-card);
  max-width: 40px;
}

/* ── Toast Notifications ────────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  align-items: center;
  pointer-events: none;
}

.toast {
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 600;
  pointer-events: auto;
  animation: toastIn 300ms cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(12px);
  border: 1px solid transparent;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.toast-success { background: rgba(92,126,16,0.9); color: #c5f285; border-color: rgba(92,126,16,0.5); }
.toast-error   { background: rgba(169,68,66,0.9); color: #f5adab; border-color: rgba(169,68,66,0.5); }
.toast-info    { background: rgba(102,192,244,0.15); color: var(--accent-blue); border-color: rgba(102,192,244,0.3); backdrop-filter: blur(20px); }
.toast-warning { background: rgba(199,160,8,0.15); color: var(--accent-gold); border-color: rgba(199,160,8,0.3); }

/* ── Code Block with Copy ───────────────────────────────────── */
.code-block {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-deep);
  border-bottom: 1px solid var(--border-card);
}

.code-lang {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--border-card);
  color: var(--text-secondary);
  padding: 4px var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-arabic);
}
.copy-btn:hover { border-color: var(--accent-blue); color: var(--accent-blue); }
.copy-btn.copied { color: #8fb940; border-color: rgba(92,126,16,0.5); }

/* ── Divider ────────────────────────────────────────────────── */
.divider {
  border: none;
  border-top: 1px solid var(--border-card);
  margin: var(--space-lg) 0;
}

.divider-text {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  color: var(--text-secondary);
  font-size: 0.85rem;
}
.divider-text::before,
.divider-text::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-card);
}

/* ── Skeleton Loading ───────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, rgba(102,192,244,0.05) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

/* ── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: rgba(102,192,244,0.3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-blue); }

/* ── Animations ─────────────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(24px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(16px) scale(0.9); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

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

.animate-fade-in  { animation: fadeIn 400ms ease both; }
.animate-slide-up { animation: fadeInUp 500ms ease both; }

/* Stagger children */
.stagger-children > * {
  animation: fadeInUp 500ms ease both;
}
.stagger-children > *:nth-child(1) { animation-delay: 0ms; }
.stagger-children > *:nth-child(2) { animation-delay: 80ms; }
.stagger-children > *:nth-child(3) { animation-delay: 160ms; }
.stagger-children > *:nth-child(4) { animation-delay: 240ms; }
.stagger-children > *:nth-child(5) { animation-delay: 320ms; }
.stagger-children > *:nth-child(6) { animation-delay: 400ms; }
.stagger-children > *:nth-child(7) { animation-delay: 480ms; }
.stagger-children > *:nth-child(8) { animation-delay: 560ms; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
  .container { padding: 0 var(--space-md); }
  .nav { padding: 0 var(--space-md); gap: var(--space-md); }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .nav-links { display: none; }
}

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}