/* ========================================
   Portfolio CSS - Jehad Baniowda
   Version: 1.0
   RTL First Design with LTR Support
   ======================================== */

/* ========================================
   1. CSS Variables
   ======================================== */
:root {
  /* Colors - Light Theme */
  --color-primary: #23436c; /* أزرق داكن - ثقة واحترافية */
  --color-primary-dark: #182c47; /* أزرق أكثر عمقًا */
  --color-primary-light: #4f6fa3; /* أزرق فاتح */
  --color-secondary: #bfa76a; /* ذهبي ترابي - يرمز للتميز */
  --color-secondary-dark: #8c7a43; /* ذهبي داكن */
  --color-accent: #e67e22; /* برتقالي - يرمز للإبداع */
  --color-danger: #c0392b; /* أحمر ترابي - تحذير */
  
  --color-bg: #f4f6f7; /* رمادي فاتح - يرمز للخرسانة */
  --color-surface: #e9ecef;
  --color-surface-2: #d6d8db;
  --color-text: #222a35; /* رمادي داكن - وضوح */
  --color-text-secondary: #6c757d;
  --color-text-light: #aab4be;
  --color-border: #bfc9d1;
  --color-border-light: #d6d8db;
  
  --color-white: #ffffff;
  --color-black: #000000;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(60, 64, 67, 0.3), 0 1px 3px 1px rgba(60, 64, 67, 0.15);
  --shadow-md: 0 1px 3px 0 rgba(60, 64, 67, 0.3), 0 4px 8px 3px rgba(60, 64, 67, 0.15);
  --shadow-lg: 0 2px 6px 2px rgba(60, 64, 67, 0.15), 0 8px 12px 4px rgba(60, 64, 67, 0.1);
  --shadow-xl: 0 4px 12px 4px rgba(60, 64, 67, 0.12), 0 16px 32px 8px rgba(60, 64, 67, 0.08);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  
  /* Typography */
  --font-arabic: 'Tajawal', 'Dubai', 'Noto Sans Arabic', 'Almarai', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-english: 'Inter', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Fira Code', 'Courier New', monospace;
  
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3rem;
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.75;
  
  /* Layout */
  --container-max-width: 1200px;
  --navbar-height: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --color-primary: #4f6fa3;
  --color-primary-dark: #23436c;
  --color-primary-light: #bfa76a;
  
  --color-bg: #181c22; /* رمادي داكن جداً */
  --color-surface: #222a35;
  --color-surface-2: #2c3440;
  --color-text: #e9ecef;
  --color-text-secondary: #bfc9d1;
  --color-text-light: #aab4be;
  --color-border: #4f5b69;
  --color-border-light: #2c3440;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.6), 0 1px 3px 1px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 1px 3px 0 rgba(0, 0, 0, 0.6), 0 4px 8px 3px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 2px 6px 2px rgba(0, 0, 0, 0.3), 0 8px 12px 4px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 4px 12px 4px rgba(0, 0, 0, 0.24), 0 16px 32px 8px rgba(0, 0, 0, 0.16);
}

/* ========================================
   2. Reset & Base Styles
   ======================================== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
}

body {
  font-family: var(--font-arabic);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--transition-base);
}

/* English text handling */
:lang(en) body,
.lang-en body {
  font-family: var(--font-english);
  direction: ltr;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
  margin-bottom: var(--spacing-md);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
}

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

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  width: 100%;
}

/* ========================================
   3. Utility Classes
   ======================================== */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Visually Hidden */
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* ========================================
   4. Components - Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--secondary {
  background: var(--color-surface);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--secondary:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  border: 2px solid var(--color-border);
  color: var(--color-text);
}

.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--block {
  width: 100%;
}

.btn__icon {
  width: 1.25rem;
  height: 1.25rem;
  fill: currentColor;
}

/* ========================================
   5. Navigation
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background: var(--color-bg);
  box-shadow: var(--shadow-sm);
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: var(--color-surface);
}

.navbar__wrapper {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar__logo {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  display: flex;
  align-items: center;
}

.navbar__logo:hover {
  color: var(--color-primary);
  opacity: 0.9;
}

.logo__img {
  height: 45px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
  transition: all var(--transition-base);
}

.navbar.scrolled .logo__img {
  height: 38px;
}

.logo__text {
  display: inline-block;
}

.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  width: 32px;
  height: 32px;
  padding: 4px;
}

.hamburger {
  width: 100%;
  height: 2px;
  background: var(--color-text);
  transition: all var(--transition-base);
}

.navbar__menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-2xl);
}

.navbar__list {
  display: flex;
  gap: var(--spacing-xl);
}

.navbar__link {
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
}

.navbar__link:hover {
  color: var(--color-primary);
  background: var(--color-surface);
}

.navbar__link.active {
  color: var(--color-primary);
}

.navbar__link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  right: var(--spacing-sm);
  left: var(--spacing-sm);
  height: 2px;
  background: var(--color-primary);
}

/* LTR navbar link active indicator */
:lang(en) .navbar__link.active::after,
.lang-en .navbar__link.active::after {
  right: var(--spacing-sm);
  left: var(--spacing-sm);
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Theme Toggle */
.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  transition: all var(--transition-base);
}

.theme-toggle:hover {
  background: var(--color-surface-2);
  transform: rotate(180deg);
}

[data-theme="dark"] .sun-icon {
  display: none;
}

[data-theme="light"] .moon-icon {
  display: none;
}

/* Language Toggle */
.lang-toggle {
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-base);
  cursor: pointer;
  user-select: none;
  min-width: 50px;
  text-align: center;
}

.lang-toggle:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: scale(1.05);
}

.lang-toggle:active {
  transform: scale(0.95);
}

/* ========================================
   6. Hero Section
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--navbar-height) + var(--spacing-3xl)) 0 var(--spacing-3xl);
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-bg) 100%);
}

.hero__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.hero__greeting {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  display: block;
  margin-bottom: var(--spacing-sm);
}

.hero__name {
  color: var(--color-primary);
  font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.6s ease;
}

.hero__title {
  color: var(--color-text);
  font-size: clamp(var(--font-size-xl), 3vw, var(--font-size-3xl));
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.8s ease;
}

.hero__description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-2xl);
  animation: fadeInUp 1s ease;
}

.hero__cta {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  animation: fadeInUp 1.2s ease;
}

.hero__visual {
  position: relative;
  animation: float 6s ease-in-out infinite;
}

.hero__image-wrapper {
  position: relative;
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
}

/* ========================================
   7. About Section
   ======================================== */
.about {
  padding: var(--spacing-4xl) 0;
  background: var(--color-bg);
}

.section__title {
  font-size: var(--font-size-3xl);
  text-align: center;
  margin-bottom: var(--spacing-3xl);
  position: relative;
}

.section__title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  right: 50%;
  transform: translateX(50%);
  width: 60px;
  height: 4px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

.about__content {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.about__image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.about__image:hover img {
  transform: scale(1.05);
}

.about__text h3 {
  color: var(--color-primary);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-lg);
}

.about__text p {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.about__info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
}

.info__item {
  text-align: center;
}

.info__label {
  display: block;
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-xs);
}

.info__value {
  display: block;
  color: var(--color-text);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
}

/* ========================================
   8. Skills Section
   ======================================== */
.skills {
  padding: var(--spacing-4xl) 0;
  background: var(--color-surface);
}

.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-2xl);
}

.skills__category {
  padding: var(--spacing-xl);
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.skills__category:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.skills__category-title {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
}

.skills__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.skill__header {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
}

.skill__name {
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.skill__percentage {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.skill__bar {
  height: 8px;
  background: var(--color-surface-2);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.skill__progress {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: var(--radius-full);
  width: 0;
  transition: width 1.5s ease;
}

/* ========================================
   9. Projects Section
   ======================================== */
.projects {
  padding: var(--spacing-4xl) 0;
  background: var(--color-bg);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.project__card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  cursor: pointer;
}

.project__card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.project__image {
  height: 200px;
  background: var(--color-surface-2);
  position: relative;
  overflow: hidden;
}

.project__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project__card:hover .project__image img {
  transform: scale(1.1);
}

.project__content {
  padding: var(--spacing-lg);
}

.project__title {
  font-size: var(--font-size-xl);
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.project__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.project__tag {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-primary);
  color: var(--color-white);
  font-size: var(--font-size-xs);
  border-radius: var(--radius-full);
}

.project__description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
  margin-bottom: var(--spacing-md);
}

.project__value {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  font-weight: var(--font-weight-semibold);
}

.projects__more {
  text-align: center;
}

/* ========================================
   9.5. Apps Section
   ======================================== */
.apps {
  padding: var(--spacing-4xl) 0;
  background: var(--color-surface);
}

.section__subtitle {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  margin-top: calc(var(--spacing-xl) * -1);
  margin-bottom: var(--spacing-3xl);
}

.apps__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.app__card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.app__card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.app__icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
  display: block;
}

.app__title {
  font-size: var(--font-size-xl);
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.app__description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
  margin-bottom: var(--spacing-lg);
  flex-grow: 1;
}

.app__tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
}

.app__tag {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-secondary);
  color: var(--color-white);
  font-size: var(--font-size-xs);
  border-radius: var(--radius-full);
}

.app__link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-xl);
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-base);
}

.app__link:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
  transform: scale(1.05);
}

.app__link svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* ========================================
   10. Timeline / Experience
   ======================================== */
.experience {
  padding: var(--spacing-4xl) 0;
  background: var(--color-surface);
}

.timeline {
  position: relative;
  padding: var(--spacing-lg) 0;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  right: 30px;
  width: 2px;
  height: 100%;
  background: var(--color-border);
}

/* LTR timeline line */
:lang(en) .timeline::before,
.lang-en .timeline::before {
  right: auto;
  left: 30px;
}

.timeline__item {
  position: relative;
  padding-right: 60px;
  padding-bottom: var(--spacing-2xl);
}

:lang(en) .timeline__item,
.lang-en .timeline__item {
  padding-right: 0;
  padding-left: 60px;
}

.timeline__marker {
  position: absolute;
  top: 5px;
  right: 22px;
  width: 16px;
  height: 16px;
  background: var(--color-primary);
  border: 4px solid var(--color-bg);
  border-radius: var(--radius-full);
  z-index: 1;
  transition: all var(--transition-base);
}

:lang(en) .timeline__marker,
.lang-en .timeline__marker {
  right: auto;
  left: 22px;
}

.timeline__item:hover .timeline__marker {
  transform: scale(1.3);
  box-shadow: 0 0 0 8px rgba(26, 115, 232, 0.1);
}

.timeline__content {
  padding: var(--spacing-lg);
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.timeline__item:hover .timeline__content {
  box-shadow: var(--shadow-md);
}

.timeline__date {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--color-primary);
  color: var(--color-white);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-md);
}

.timeline__title {
  font-size: var(--font-size-xl);
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.timeline__company {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-md);
}

.timeline__description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ========================================
   11. Contact Section
   ======================================== */
.contact {
  padding: var(--spacing-4xl) 0;
  background: var(--color-bg);
}

.contact__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
}

.contact__info h3 {
  font-size: var(--font-size-2xl);
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

.contact__info p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.contact__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  color: var(--color-text);
  transition: all var(--transition-base);
}

.contact__item:hover {
  color: var(--color-primary);
}

.contact__icon {
  fill: var(--color-primary);
}

.contact__social {
  display: flex;
  gap: var(--spacing-md);
}

.social__link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.social__link:hover {
  background: var(--color-primary);
  transform: translateY(-3px);
}

.social__link svg {
  fill: var(--color-text);
}

.social__link:hover svg {
  fill: var(--color-white);
}

/* Contact Form */
.contact__form {
  background: var(--color-surface);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.form__group {
  margin-bottom: var(--spacing-lg);
}

.form__label {
  display: block;
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-sm);
}

.form__input,
.form__textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: all var(--transition-base);
}

.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
}

.form__textarea {
  resize: vertical;
  min-height: 120px;
}

/* ========================================
   12. Footer
   ======================================== */
.footer {
  padding: var(--spacing-xl) 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

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

.footer__copyright {
  color: var(--color-text-secondary);
}

.footer__links {
  display: flex;
  gap: var(--spacing-lg);
}

.footer__link {
  color: var(--color-text-secondary);
  transition: all var(--transition-base);
}

.footer__link:hover {
  color: var(--color-primary);
}

/* ========================================
   13. Back to Top
   ======================================== */
.back-to-top {
  position: fixed;
  bottom: var(--spacing-xl);
  left: var(--spacing-xl);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: var(--z-fixed);
}

:lang(en) .back-to-top,
.lang-en .back-to-top {
  left: auto;
  right: var(--spacing-xl);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-3px);
}

.back-to-top svg {
  fill: currentColor;
}

/* ========================================
   14. Animations
   ======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideInLeft {
  from {
    transform: translateX(-100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* Scroll Animations */
[data-aos] {
  opacity: 0;
  transition: all 0.6s ease;
}

[data-aos].aos-animate {
  opacity: 1;
}

[data-aos="fade-up"] {
  transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
  transform: translateY(0);
}

[data-aos="fade-right"] {
  transform: translateX(-30px);
}

[data-aos="fade-right"].aos-animate {
  transform: translateX(0);
}

[data-aos="fade-left"] {
  transform: translateX(30px);
}

[data-aos="fade-left"].aos-animate {
  transform: translateX(0);
}

/* ========================================
   15. Media Queries
   ======================================== */
/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
  .hero__content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero__visual {
    display: none;
  }
  
  .about__content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .about__image {
    width: 250px;
    height: 250px;
    margin: 0 auto;
  }
  
  .contact__content {
    grid-template-columns: 1fr;
  }
}

/* Mobile (max-width 768px) */
@media (max-width: 768px) {
  /* Typography */
  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
  h3 { font-size: var(--font-size-xl); }
  
  /* Container */
  .container {
    padding: 0 var(--spacing-md);
  }
  
  /* Navigation */
  .logo__img {
    height: 36px;
    max-width: 150px;
  }

  .navbar.scrolled .logo__img {
    height: 32px;
  }

  .navbar__toggle {
    display: flex;
  }

  .navbar__menu {
    position: fixed;
    top: var(--navbar-height);
    right: -100%;
    width: 100%;
    height: calc(100vh - var(--navbar-height));
    background: var(--color-bg);
    flex-direction: column;
    padding: var(--spacing-xl);
    transition: right var(--transition-base);
    box-shadow: var(--shadow-xl);
  }
  
  .navbar__menu.active {
    right: 0;
  }
  
  :lang(en) .navbar__menu,
  .lang-en .navbar__menu {
    right: auto;
    left: -100%;
  }
  
  :lang(en) .navbar__menu.active,
  .lang-en .navbar__menu.active {
    left: 0;
  }
  
  .navbar__list {
    flex-direction: column;
    width: 100%;
  }
  
  .navbar__link {
    padding: var(--spacing-md);
    width: 100%;
    text-align: center;
    border-radius: var(--radius-md);
  }
  
  /* Hero */
  .hero {
    min-height: auto;
    padding: calc(var(--navbar-height) + var(--spacing-2xl)) 0 var(--spacing-2xl);
  }
  
  .hero__cta {
    flex-direction: column;
    width: 100%;
  }
  
  .hero__cta .btn {
    width: 100%;
  }
  
  /* Skills */
  .skills__grid {
    grid-template-columns: 1fr;
  }
  
  /* Projects */
  .projects__grid {
    grid-template-columns: 1fr;
  }
  
  /* Timeline */
  .timeline::before {
    right: 15px;
  }
  
  :lang(en) .timeline::before,
  .lang-en .timeline::before {
    left: 15px;
  }
  
  .timeline__item {
    padding-right: 45px;
  }
  
  :lang(en) .timeline__item,
  .lang-en .timeline__item {
    padding-right: 0;
    padding-left: 45px;
  }
  
  .timeline__marker {
    right: 7px;
  }
  
  :lang(en) .timeline__marker,
  .lang-en .timeline__marker {
    right: auto;
    left: 7px;
  }
  
  /* Footer */
  .footer__content {
    flex-direction: column;
    text-align: center;
  }
  
  /* Back to Top */
  .back-to-top {
    width: 40px;
    height: 40px;
    bottom: var(--spacing-lg);
    left: var(--spacing-lg);
  }
  
  :lang(en) .back-to-top,
  .lang-en .back-to-top {
    right: var(--spacing-lg);
  }
}

/* Small Mobile (max-width 480px) */
@media (max-width: 480px) {
  /* Typography */
  body {
    font-size: var(--font-size-sm);
  }
  
  h1 { font-size: var(--font-size-2xl); }
  h2 { font-size: var(--font-size-xl); }
  h3 { font-size: var(--font-size-lg); }
  
  /* Spacing */
  section {
    padding: var(--spacing-3xl) 0;
  }
  
  /* Projects */
  .projects__grid {
    gap: var(--spacing-md);
  }
  
  /* Skills */
  .skills__category {
    padding: var(--spacing-md);
  }
  
  /* Contact Form */
  .contact__form {
    padding: var(--spacing-md);
  }
}

/* Print Styles */
@media print {
  * {
    background: transparent !important;
    color: black !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }
  
  .navbar,
  .back-to-top,
  .theme-toggle,
  .lang-toggle,
  .hero__cta,
  .contact__form {
    display: none !important;
  }
  
  a[href]:after {
    content: " (" attr(href) ")";
  }
  
  h2, h3 {
    page-break-after: avoid;
  }
}

/* ========================================
   16. Accessibility
   ======================================== */
/* Focus Styles */
*:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* High Contrast */
@media (prefers-contrast: high) {
  :root {
    --color-primary: #0051c7;
    --color-text: #000000;
    --color-bg: #ffffff;
    --color-border: #000000;
  }
  
  [data-theme="dark"] {
    --color-primary: #4493ff;
    --color-text: #ffffff;
    --color-bg: #000000;
    --color-border: #ffffff;
  }
}

/* Dark Mode System Preference */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-primary: #4285f4;
    --color-primary-dark: #1a73e8;
    --color-primary-light: #669df6;
    
    --color-bg: #0a0e27;
    --color-surface: #1c1f33;
    --color-surface-2: #282c47;
    --color-text: #e8eaed;
    --color-text-secondary: #9aa0a6;
    --color-text-light: #80868b;
    --color-border: #3c4043;
    --color-border-light: #282c47;
  }
}