/* ==========================================================================
   Portfolio Website - Design System & Styles
   A modern, professional dark theme portfolio
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Colors - Sophisticated Dark Palette */
  --color-bg-primary: #0c0c0f;
  --color-bg-secondary: #12121a;
  --color-bg-tertiary: #1a1a24;
  --color-bg-card: rgba(26, 26, 36, 0.6);
  --color-bg-card-hover: rgba(35, 35, 50, 0.8);

  /* Accent Colors - Refined, not neon */
  --color-accent-primary: #6366f1;
  /* Indigo */
  --color-accent-secondary: #3b82f6;
  /* Blue */
  --color-accent-tertiary: #8b5cf6;
  /* Violet */
  --color-accent-gradient: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));

  /* Text Colors */
  --color-text-primary: #f8fafc;
  --color-text-secondary: #94a3b8;
  --color-text-tertiary: #64748b;
  --color-text-accent: var(--color-accent-primary);

  /* Borders & Surfaces */
  --color-border: rgba(148, 163, 184, 0.1);
  --color-border-hover: rgba(148, 163, 184, 0.2);
  --color-glass: rgba(255, 255, 255, 0.03);
  --color-glass-border: rgba(255, 255, 255, 0.08);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Outfit', var(--font-primary);

  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --text-7xl: 4.5rem;

  /* Font Weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  --transition-slower: 500ms ease;

  /* Layout */
  --container-max: 1200px;
  --container-padding: var(--space-6);
  --section-padding: var(--space-24);
  --nav-height: 80px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

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

::selection {
  background-color: var(--color-accent-primary);
  color: white;
}

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

h1 {
  font-size: var(--text-5xl);
}

h2 {
  font-size: var(--text-4xl);
}

h3 {
  font-size: var(--text-2xl);
}

h4 {
  font-size: var(--text-xl);
}

p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

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

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

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

.section {
  padding: var(--section-padding) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-tertiary);
  max-width: 600px;
  margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: background-color var(--transition-base), backdrop-filter var(--transition-base);
}

.nav.scrolled {
  background-color: rgba(12, 12, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

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

.nav-logo {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-logo-icon {
  width: 32px;
  height: 32px;
  background: var(--color-accent-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  color: white;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent-gradient);
  transition: width var(--transition-base);
}

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

.nav-link:hover::after {
  width: 100%;
}

.nav-cta {
  padding: var(--space-2) var(--space-5);
  background: var(--color-accent-gradient);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: white !important;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.nav-cta::after {
  display: none;
}

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 30%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 70% 70%, rgba(59, 130, 246, 0.06) 0%, transparent 50%);
  animation: hero-bg-rotate 30s linear infinite;
}

@keyframes hero-bg-rotate {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg-card);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  backdrop-filter: blur(10px);
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background-color: #22c55e;
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

.hero-title {
  font-size: clamp(var(--text-4xl), 8vw, var(--text-7xl));
  margin-bottom: var(--space-6);
  line-height: 1.1;
}

.hero-title-gradient {
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-10);
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-accent-gradient);
  color: white;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
  color: white;
}

.btn-secondary {
  background: var(--color-bg-card);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-hover);
  color: var(--color-text-primary);
}

.btn-icon {
  width: 20px;
  height: 20px;
}

/* --------------------------------------------------------------------------
   About Section
   -------------------------------------------------------------------------- */
.about {
  background: var(--color-bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-16);
  align-items: center;
}

.about-image-wrapper {
  position: relative;
}

.about-image {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  object-position: center 15%;
  border-radius: var(--radius-2xl);
  border: 1px solid var(--color-border);
}

.about-image-placeholder {
  width: 100%;
  aspect-ratio: 4/5;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  color: var(--color-text-tertiary);
}

.about-image-placeholder svg {
  width: 64px;
  height: 64px;
  opacity: 0.5;
}

.about-image-decoration {
  position: absolute;
  inset: -8px;
  border: 2px solid var(--color-accent-primary);
  border-radius: calc(var(--radius-2xl) + 4px);
  z-index: -1;
  opacity: 0.5;
}

.about-content h2 {
  margin-bottom: var(--space-6);
}

.about-text {
  font-size: var(--text-lg);
  margin-bottom: var(--space-8);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.about-stat {
  text-align: center;
}

.about-stat-value {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--color-accent-primary);
  margin-bottom: var(--space-1);
}

.about-stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --------------------------------------------------------------------------
   Skills Section
   -------------------------------------------------------------------------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.skill-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
}

.skill-card:hover {
  background: var(--color-bg-card-hover);
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}

.skill-icon {
  width: 48px;
  height: 48px;
  background: var(--color-accent-gradient);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
}

.skill-icon svg {
  width: 24px;
  height: 24px;
  color: white;
}

.skill-card h3 {
  margin-bottom: var(--space-3);
}

.skill-card p {
  font-size: var(--text-sm);
  margin-bottom: var(--space-5);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.skill-tag {
  padding: var(--space-1) var(--space-3);
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

/* --------------------------------------------------------------------------
   Projects Section
   -------------------------------------------------------------------------- */
.projects {
  background: var(--color-bg-secondary);
}

.projects-grid {
  display: grid;
  gap: var(--space-8);
}

.project-card {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-10);
  background: var(--color-bg-card);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
}

.project-card:hover {
  background: var(--color-bg-card-hover);
  box-shadow: var(--shadow-glow);
}

.project-card:nth-child(even) {
  grid-template-columns: 1fr 1.2fr;
}

.project-card:nth-child(even) .project-image-wrapper {
  order: 2;
}

.project-image-wrapper {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 16/10;
  background: var(--color-bg-tertiary);
}

/* Standard image - crops to fill container */
.project-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

/* For portrait/vertical images - contains the image with blurred background */
.project-image-wrapper.portrait {
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-image-wrapper.portrait::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: inherit;
  background-size: cover;
  background-position: center;
  filter: blur(20px) brightness(0.4);
  transform: scale(1.1);
}

.project-image-wrapper.portrait .project-image {
  position: relative;
  width: auto;
  height: 100%;
  max-width: 100%;
  object-fit: contain;
}

.project-card:hover .project-image {
  transform: scale(1.05);
}

.project-image-placeholder {
  width: 100%;
  aspect-ratio: 16/10;
  background: var(--color-bg-tertiary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  color: var(--color-text-tertiary);
}

.project-image-placeholder svg {
  width: 48px;
  height: 48px;
  opacity: 0.5;
}

.project-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.project-type {
  font-size: var(--text-sm);
  color: var(--color-accent-primary);
  font-weight: var(--font-medium);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-content h3 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
}

.project-content p {
  margin-bottom: var(--space-6);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.project-tech-tag {
  padding: var(--space-1) var(--space-3);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--color-accent-primary);
  font-weight: var(--font-medium);
}

.project-links {
  display: flex;
  gap: var(--space-4);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.project-link:hover {
  color: var(--color-accent-primary);
}

.project-link svg {
  width: 18px;
  height: 18px;
}

.more-projects {
  margin-top: var(--space-10);
  padding: var(--space-6);
  background: var(--color-bg-card);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-xl);
  text-align: center;
}

.more-projects p {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin: 0;
}

.more-projects strong {
  color: var(--color-text-primary);
}

/* --------------------------------------------------------------------------
   Experience Section
   -------------------------------------------------------------------------- */
.experience-timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.experience-timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-accent-primary), var(--color-accent-secondary));
  border-radius: var(--radius-full);
}

.experience-item {
  position: relative;
  padding-left: var(--space-10);
  padding-bottom: var(--space-12);
}

.experience-item:last-child {
  padding-bottom: 0;
}

.experience-dot {
  position: absolute;
  left: -7px;
  top: 0;
  width: 16px;
  height: 16px;
  background: var(--color-accent-gradient);
  border-radius: 50%;
  border: 3px solid var(--color-bg-primary);
}

.experience-date {
  font-size: var(--text-sm);
  color: var(--color-accent-primary);
  font-weight: var(--font-medium);
  margin-bottom: var(--space-2);
}

.experience-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
}

.experience-card:hover {
  background: var(--color-bg-card-hover);
  box-shadow: var(--shadow-glow);
}

.experience-card h3 {
  margin-bottom: var(--space-1);
}

.experience-company {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.experience-card p {
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}

.experience-skills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* --------------------------------------------------------------------------
   Education Section
   -------------------------------------------------------------------------- */
.education {
  background: var(--color-bg-secondary);
}

.education-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-6);
  max-width: 900px;
  margin: 0 auto;
}

.education-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.education-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-accent-gradient);
}

.education-card:hover {
  background: var(--color-bg-card-hover);
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}

.education-degree {
  font-size: var(--text-sm);
  color: var(--color-accent-primary);
  font-weight: var(--font-medium);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.education-card h3 {
  margin-bottom: var(--space-2);
}

.education-school {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.education-date {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

/* --------------------------------------------------------------------------
   Contact Section
   -------------------------------------------------------------------------- */
.contact-container {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.contact-title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

.contact-description {
  font-size: var(--text-lg);
  margin-bottom: var(--space-10);
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-10);
  padding: var(--space-4) var(--space-8);
  background: var(--color-bg-card);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.contact-email:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-accent-primary);
  color: var(--color-accent-primary);
}

.contact-email svg {
  width: 28px;
  height: 28px;
}

.contact-socials {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
}

.contact-social {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  color: var(--color-text-secondary);
  transition: all var(--transition-base);
}

.contact-social:hover {
  background: var(--color-accent-gradient);
  border-color: transparent;
  color: white;
  transform: translateY(-3px);
}

.contact-social svg {
  width: 24px;
  height: 24px;
}

.contact-phone {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

.contact-location {
  font-size: var(--text-base);
  color: var(--color-text-tertiary);
  margin-top: var(--space-8);
}

/* Education Details */
.education-note {
  font-size: var(--text-sm);
  color: var(--color-accent-primary);
  margin-bottom: var(--space-3);
  font-weight: var(--font-medium);
}

.education-details {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  line-height: 1.6;
  margin-top: var(--space-2);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  padding: var(--space-8) 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer-text {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

/* --------------------------------------------------------------------------
   Scroll Animations
   -------------------------------------------------------------------------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slower), transform var(--transition-slower);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 {
  transition-delay: 100ms;
}

.fade-in-delay-2 {
  transition-delay: 200ms;
}

.fade-in-delay-3 {
  transition-delay: 300ms;
}

.fade-in-delay-4 {
  transition-delay: 400ms;
}

/* --------------------------------------------------------------------------
   Responsive Design
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  :root {
    --section-padding: var(--space-16);
  }

  .about-grid {
    gap: var(--space-10);
  }

  .project-card {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .project-card:nth-child(even) {
    grid-template-columns: 1fr;
  }

  .project-card:nth-child(even) .project-image-wrapper {
    order: 0;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: var(--space-12);
    --container-padding: var(--space-4);
  }

  h1 {
    font-size: var(--text-4xl);
  }

  h2 {
    font-size: var(--text-3xl);
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    justify-content: center;
    gap: var(--space-8);
    background: var(--color-bg-primary);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
  }

  .nav-links.active {
    opacity: 1;
    visibility: visible;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .about-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .about-image-wrapper {
    max-width: 300px;
    margin: 0 auto;
  }

  .about-stats {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .education-grid {
    grid-template-columns: 1fr;
  }

  .experience-timeline::before {
    left: 7px;
  }

  .experience-dot {
    left: 0;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    max-width: 280px;
  }

  .contact-email {
    font-size: var(--text-lg);
    padding: var(--space-3) var(--space-6);
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: var(--text-3xl);
  }

  .hero-description {
    font-size: var(--text-base);
  }

  .section-title {
    font-size: var(--text-3xl);
  }

  .project-card {
    padding: var(--space-5);
  }
}