/* ============================================
   OMAR PORTFOLIO - BASE STYLES & RESET
   ============================================ */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-base);
  transition: background-color var(--transition-base), color var(--transition-base);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

[lang="ar"] body,
body[lang="ar"] {
  font-family: var(--font-arabic);
  direction: rtl;
}

img, video {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

[lang="ar"] h1,
[lang="ar"] h2,
[lang="ar"] h3,
[lang="ar"] h4,
[lang="ar"] h5,
[lang="ar"] h6 {
  font-family: var(--font-arabic);
}

/* ============================================
   CONTAINER
   ============================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.container--narrow {
  max-width: 860px;
}

.container--wide {
  max-width: 1440px;
}

/* ============================================
   SECTION
   ============================================ */

.section {
  padding: var(--space-24) 0;
}

.section--lg {
  padding: var(--space-32) 0;
}

.section--sm {
  padding: var(--space-16) 0;
}

/* ============================================
   TYPOGRAPHY UTILITIES
   ============================================ */

.font-display  { font-family: var(--font-display); }
.font-body     { font-family: var(--font-body); }
.font-arabic   { font-family: var(--font-arabic); }

.text-xs    { font-size: var(--text-xs); }
.text-sm    { font-size: var(--text-sm); }
.text-base  { font-size: var(--text-base); }
.text-lg    { font-size: var(--text-lg); }
.text-xl    { font-size: var(--text-xl); }
.text-2xl   { font-size: var(--text-2xl); }
.text-3xl   { font-size: var(--text-3xl); }
.text-4xl   { font-size: var(--text-4xl); }
.text-5xl   { font-size: var(--text-5xl); }
.text-6xl   { font-size: var(--text-6xl); }
.text-7xl   { font-size: var(--text-7xl); }

.font-light    { font-weight: 300; }
.font-normal   { font-weight: 400; }
.font-medium   { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold     { font-weight: 700; }
.font-extrabold{ font-weight: 800; }

.text-primary   { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted     { color: var(--text-muted); }
.text-accent    { color: var(--accent-blue); }
.text-gradient  {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================
   FLEX & GRID UTILITIES
   ============================================ */

.flex         { display: flex; }
.flex-col     { flex-direction: column; }
.items-center { align-items: center; }
.items-start  { align-items: flex-start; }
.items-end    { align-items: flex-end; }
.justify-center  { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end     { justify-content: flex-end; }
.gap-2  { gap: var(--space-2); }
.gap-3  { gap: var(--space-3); }
.gap-4  { gap: var(--space-4); }
.gap-6  { gap: var(--space-6); }
.gap-8  { gap: var(--space-8); }
.flex-wrap { flex-wrap: wrap; }
.flex-1    { flex: 1; }

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

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: all var(--transition-base);
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

[lang="ar"] .btn {
  font-family: var(--font-arabic);
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity var(--transition-fast);
  background: rgba(255,255,255,0.1);
}

.btn:hover::after { opacity: 1; }
.btn:active { transform: scale(0.97); }

/* Primary */
.btn-primary {
  background: var(--gradient-primary);
  color: var(--text-inverse);
  box-shadow: var(--shadow-accent);
}

.btn-primary:hover {
  box-shadow: var(--shadow-accent), 0 0 0 4px rgba(37,99,235,0.15);
  transform: translateY(-1px);
}

/* Secondary */
.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1.5px solid var(--border-medium);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  padding: 0.5rem 1rem;
}

.btn-ghost:hover {
  background: var(--bg-elevated);
  color: var(--accent-blue);
}

/* Icon button */
.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1.5px solid var(--border-light);
  color: var(--text-secondary);
  box-shadow: var(--shadow-xs);
}

.btn-icon:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  box-shadow: var(--shadow-sm);
}

/* Sizes */
.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: var(--text-xs);
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: var(--text-base);
}

/* ============================================
   CARDS
   ============================================ */

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--border-accent);
}

.card--elevated {
  box-shadow: var(--shadow-lg);
}

.card--glass {
  background: var(--bg-overlay);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.2);
}

[data-theme="dark"] .card--glass {
  background: rgba(15,23,42,0.8);
  border-color: rgba(255,255,255,0.05);
}

/* ============================================
   BADGES & PILLS
   ============================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.03em;
}

.badge-blue {
  background: rgba(37,99,235,0.1);
  color: var(--accent-blue);
  border: 1px solid rgba(37,99,235,0.2);
}

.badge-violet {
  background: rgba(124,58,237,0.1);
  color: var(--accent-violet);
  border: 1px solid rgba(124,58,237,0.2);
}

.badge-cyan {
  background: rgba(14,165,233,0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(14,165,233,0.2);
}

.badge-emerald {
  background: rgba(5,150,105,0.1);
  color: var(--accent-emerald);
  border: 1px solid rgba(5,150,105,0.2);
}

/* ============================================
   SECTION HEADERS
   ============================================ */

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-blue);
  margin-bottom: var(--space-4);
}

.section-label::before {
  content: '';
  width: 20px;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

[lang="ar"] .section-label::before {
  order: 1;
}

.section-title {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-4);
}

.section-desc {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.7;
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.92); }
  to   { opacity: 1; transform: scale(1); }
}

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

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

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(37,99,235,0.3); }
  50%       { box-shadow: 0 0 0 12px rgba(37,99,235,0); }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-8px); }
}

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

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

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ============================================
   DIVIDER
   ============================================ */

.divider {
  width: 100%;
  height: 1px;
  background: var(--border-light);
  margin: var(--space-8) 0;
}

.divider--gradient {
  background: linear-gradient(90deg, transparent, var(--border-medium), transparent);
}

/* ============================================
   SCROLLBAR
   ============================================ */

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-base);
}

::-webkit-scrollbar-thumb {
  background: var(--border-medium);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ============================================
   SELECTION
   ============================================ */

::selection {
  background: rgba(37,99,235,0.15);
  color: var(--accent-blue);
}

/* ============================================
   FOCUS
   ============================================ */

:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ============================================
   RESPONSIVE
   ============================================ */

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

@media (max-width: 768px) {
  .grid-4,
  .grid-3,
  .grid-2 { grid-template-columns: 1fr; }
  .section { padding: var(--space-16) 0; }
  .section--lg { padding: var(--space-20) 0; }
  .hide-mobile { display: none !important; }
}

@media (max-width: 480px) {
  :root {
    --header-height: 64px;
  }
  .section { padding: var(--space-12) 0; }
}