/* ============================================
   DESIGN TOKENS
   ============================================ */
:root {
  --bg: #09090b;
  --bg-secondary: #18181b;
  --bg-tertiary: #27272a;
  --border: #27272a;
  --border-hover: #3f3f46;
  --text: #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent: #ef4444;
  --accent-dim: rgba(239, 68, 68, 0.1);
  --accent-hover: #dc2626;
  --accent-glow: rgba(239, 68, 68, 0.2);
  --shadow: 0 0 0 transparent;
  --code-bg: #111113;
  --code-keyword: #f87171;
  --code-string: #86efac;
  --code-var: #e4e4e7;
  --code-bool: #fbbf24;
  --code-key: #93c5fd;
  --tag-bg: rgba(239, 68, 68, 0.1);
  --tag-text: #ef4444;
  --card-bg: #141416;
  --card-border: #27272a;
  --success: #22c55e;
  --error: #ef4444;
  --nav-height: 72px;
  --max-width: 1100px;
  --font-sans:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg: #fafafa;
  --bg-secondary: #f4f4f5;
  --bg-tertiary: #e4e4e7;
  --border: #e4e4e7;
  --border-hover: #d4d4d8;
  --text: #09090b;
  --text-secondary: #52525b;
  --text-muted: #a1a1aa;
  --accent: #dc2626;
  --accent-dim: rgba(220, 38, 38, 0.08);
  --accent-hover: #b91c1c;
  --accent-glow: rgba(220, 38, 38, 0.15);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  --code-bg: #f3f3f5;
  --code-keyword: #dc2626;
  --code-string: #16a34a;
  --code-var: #18181b;
  --code-bool: #d97706;
  --code-key: #2563eb;
  --tag-bg: rgba(220, 38, 38, 0.08);
  --tag-text: #dc2626;
  --card-bg: #ffffff;
  --card-border: #e4e4e7;
  --success: #16a34a;
  --error: #dc2626;
}

/* ============================================
   RESET & BASE
   ============================================ */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition:
    background-color var(--transition),
    color var(--transition);
  overflow-x: hidden;
}

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

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

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

ul {
  list-style: none;
}

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

/* ============================================
   SCROLLBAR
   ============================================ */
::-webkit-scrollbar {
  width: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border-hover);
  border-radius: 3px;
}

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

/* ============================================
   TYPOGRAPHY
   ============================================ */
.mono {
  font-family: var(--font-mono);
}

.highlight {
  color: var(--accent);
  font-weight: 600;
}

/* ============================================
   SKIP LINK
   ============================================ */
.skip-link {
  position: fixed;
  top: -100%;
  left: 16px;
  background: var(--accent);
  color: white;
  padding: 8px 16px;
  border-radius: 0 0 8px 8px;
  z-index: 10002;
  font-size: 0.875rem;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
}

/* ============================================
   SCROLL PROGRESS
   ============================================ */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-hover));
  z-index: 10001;
  transition: width 0.05s linear;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition);
  text-decoration: none;
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 24px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.btn-outline:hover {
  background: var(--accent-dim);
  box-shadow: 0 0 24px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-outline:active {
  transform: translateY(0);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.8125rem;
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* ============================================
   TAGS
   ============================================ */
.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  background: var(--tag-bg);
  color: var(--tag-text);
  font-weight: 500;
}

/* ============================================
   HEADER / NAVIGATION
   ============================================ */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition:
    background var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
  border-bottom: 1px solid transparent;
}

header.scrolled {
  background: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--border);
}

[data-theme="light"] header.scrolled {
  background: rgba(250, 250, 250, 0.85);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: var(--nav-height);
}

.logo {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text);
  transition: color var(--transition);
}

.logo:hover {
  color: var(--accent);
}

.logo-bracket {
  color: var(--accent);
}

.logo-dot {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  transition: color var(--transition);
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width var(--transition);
}

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

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

.nav-link.active {
  color: var(--accent);
}

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

.nav-number {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  margin-right: 4px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: var(--text-secondary);
  transition: all var(--transition);
  font-size: 1rem;
}

.theme-toggle:hover {
  color: var(--accent);
  background: var(--accent-dim);
}

/* Hamburger */
.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 10px;
  border-radius: 8px;
  transition: background var(--transition);
}

.mobile-toggle:hover {
  background: var(--accent-dim);
}

.mobile-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
  transform-origin: center;
}

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

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

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

/* ============================================
   MOBILE NAV
   ============================================ */
.mobile-nav {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(9, 9, 11, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 999;
  display: none;
  opacity: 0;
  transition: opacity var(--transition);
}

[data-theme="light"] .mobile-nav {
  background: rgba(250, 250, 250, 0.95);
}

.mobile-nav.open {
  display: flex;
  opacity: 1;
}

.mobile-nav-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  width: 100%;
  padding: 48px 24px;
}

.mobile-link {
  font-size: 1.125rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}

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

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-height) + 48px) 24px 48px;
  max-width: var(--max-width);
  margin: 0 auto;
  gap: 64px;
}

.hero-content {
  flex: 1;
  max-width: 600px;
}

.hero-greeting {
  font-size: 0.875rem;
  color: var(--accent);
  display: block;
  margin-bottom: 16px;
}

.hero-name {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 16px;
  color: var(--text);
}

.accent-dot {
  color: var(--accent);
}

.verified-badge {
  display: inline-flex;
  align-items: center;
  margin-left: 10px;
  color: var(--accent);
  vertical-align: middle;
  position: relative;
  top: 0;
  filter: drop-shadow(0 0 4px rgba(239, 68, 68, 0.35));
  transition:
    filter var(--transition),
    transform var(--transition);
}

.verified-badge svg {
  width: clamp(1rem, 2vw, 1.6rem);
  height: clamp(1rem, 2vw, 1.6rem);
  display: block;
}

.verified-badge:hover {
  filter: drop-shadow(0 0 8px rgba(239, 68, 68, 0.7));
  transform: scale(1.1);
}

.hero-title {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.hero-description {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
  max-width: 520px;
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border-radius: 100px;
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.2);
  margin-bottom: 32px;
  font-size: 0.8125rem;
  color: #22c55e;
}

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

@keyframes pulse-dot {
  0%,
  100% {
    opacity: 1;
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4);
  }
  50% {
    opacity: 0.7;
    box-shadow: 0 0 0 6px rgba(34, 197, 94, 0);
  }
}

.hero-cta {
  display: flex;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.hero-social {
  display: flex;
  gap: 16px;
}

.hero-social a {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: var(--text-muted);
  border: 1px solid var(--border);
  font-size: 1.125rem;
  transition: all var(--transition);
}

.hero-social a:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-dim);
  transform: translateY(-2px);
}

/* Hero Code Block */
.hero-decoration {
  flex: 0 0 380px;
}

.code-block {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow:
    var(--shadow),
    0 20px 60px rgba(0, 0, 0, 0.3);
}

.code-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
}

.code-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}

.code-filename {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-left: auto;
}

.code-content {
  padding: 20px;
  font-size: 0.8125rem;
  line-height: 1.8;
  overflow-x: auto;
  color: var(--text-secondary);
}

.code-content code {
  font-family: var(--font-mono);
}

.code-keyword {
  color: var(--code-keyword);
}
.code-string {
  color: var(--code-string);
}
.code-var {
  color: var(--code-var);
  font-weight: 600;
}
.code-bool {
  color: var(--code-bool);
}
.code-key {
  color: var(--code-key);
}

/* ============================================
   SECTIONS (COMMON)
   ============================================ */
.section {
  padding: 96px 24px;
}

.section-container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 64px;
}

.section-number {
  font-size: 0.875rem;
  color: var(--accent);
  font-weight: 500;
}

.section-header h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.5px;
  white-space: nowrap;
}

.section-line {
  flex: 1;
  height: 1px;
  background: var(--border);
  max-width: 300px;
}

/* ============================================
   ABOUT
   ============================================ */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 0.9375rem;
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 28px 24px;
  text-align: center;
  transition: all var(--transition);
}

.stat-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 24px var(--accent-glow);
  transform: translateY(-2px);
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -1px;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ============================================
   EXPERIENCE
   ============================================ */
.experience-timeline {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.experience-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 32px;
  transition: all var(--transition);
}

.experience-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 24px var(--accent-glow);
}

.exp-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.exp-header h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
}

.exp-company {
  color: var(--accent);
  font-size: 0.9375rem;
  margin-top: 4px;
}

.exp-date {
  font-size: 0.8125rem;
  color: var(--text-muted);
  white-space: nowrap;
  padding: 4px 12px;
  border-radius: 6px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
}

.exp-list {
  margin-bottom: 20px;
  padding-left: 0;
}

.exp-list li {
  position: relative;
  padding-left: 20px;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: 8px;
}

.exp-list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.exp-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ============================================
   TECH STACK
   ============================================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.skill-category {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 32px;
  transition: all var(--transition);
}

.skill-category:hover {
  border-color: var(--accent);
  box-shadow: 0 0 24px var(--accent-glow);
}

.category-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.category-title i {
  color: var(--accent);
  font-size: 1.125rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  background: var(--accent-dim);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  transition: all var(--transition);
  font-weight: 500;
}

.skill-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

/* ============================================
   PROJECTS
   ============================================ */
.projects-grid {
  display: flex;
  flex-direction: column;
  gap: 64px;
}

.project-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.project-card.reverse {
  direction: rtl;
}

.project-card.reverse > * {
  direction: ltr;
}

.project-image {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--bg-secondary);
}

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

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

.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}

.project-image:hover .project-overlay {
  opacity: 1;
}

.project-link-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  font-size: 1.125rem;
  transition: transform var(--transition);
}

.project-link-icon:hover {
  transform: scale(1.1);
}

.project-info {
  padding: 8px 0;
}

.project-label {
  font-size: 0.75rem;
  color: var(--accent);
  display: block;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.project-info h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
  letter-spacing: -0.3px;
}

.project-description {
  margin-bottom: 20px;
}

.project-description p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 8px;
}

.project-description strong {
  color: var(--text);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ============================================
   CERTIFICATIONS
   ============================================ */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.cert-card {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 28px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  transition: all var(--transition);
}

.cert-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 24px var(--accent-glow);
  transform: translateY(-2px);
}

.cert-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--accent-dim);
  color: var(--accent);
  font-size: 1.25rem;
  flex-shrink: 0;
}

.cert-info h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.cert-issuer {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.cert-year {
  font-size: 0.75rem;
  color: var(--accent);
  padding: 2px 10px;
  border-radius: 4px;
  background: var(--accent-dim);
}

/* ============================================
   CONTACT
   ============================================ */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact-headline {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
  line-height: 1.3;
}

.contact-text p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-size: 0.9375rem;
  line-height: 1.8;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-links a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  transition: color var(--transition);
}

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

.contact-links i {
  font-size: 1.125rem;
  width: 20px;
}

.contact-form-wrapper {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 32px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
  outline: none;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.form-group textarea {
  min-height: 120px;
}

/* ============================================
   FOOTER
   ============================================ */
footer {
  padding: 48px 24px;
  border-top: 1px solid var(--border);
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.footer-logo {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  transition: color var(--transition);
}

.footer-logo:hover {
  color: var(--accent);
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: var(--text-muted);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.footer-social a:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-dim);
}

.footer-bottom {
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 16px 24px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.875rem;
  font-family: var(--font-sans);
  z-index: 10001;
  transform: translateX(calc(100% + 32px));
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  max-width: 420px;
}

.toast-visible {
  transform: translateX(0);
}

.toast-success {
  background: #16a34a;
  color: white;
}

.toast-error {
  background: #dc2626;
  color: white;
}

/* ============================================
   SCROLL REVEAL ANIMATIONS
   ============================================ */

/* Hero animations — CSS only, immediate on load */
.hero .reveal {
  opacity: 0;
  animation: heroFadeUp 0.8s ease forwards;
}

.hero .reveal-delay-1 {
  animation-delay: 0.15s;
}
.hero .reveal-delay-2 {
  animation-delay: 0.3s;
}
.hero .reveal-delay-3 {
  animation-delay: 0.45s;
}
.hero .reveal-delay-4 {
  animation-delay: 0.6s;
}

@keyframes heroFadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Section reveals — JS IntersectionObserver driven */
.section .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

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

/* Stagger children */
.section .reveal:nth-child(2) {
  transition-delay: 0.1s;
}
.section .reveal:nth-child(3) {
  transition-delay: 0.2s;
}
.section .reveal:nth-child(4) {
  transition-delay: 0.3s;
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .hero .reveal,
  .section .reveal {
    opacity: 1 !important;
    transform: none !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

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

/* Tablet - 1024px */
@media (max-width: 1024px) {
  .hero {
    flex-direction: column;
    text-align: center;
    gap: 48px;
    padding-top: calc(var(--nav-height) + 64px);
  }

  .hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .hero-description {
    text-align: center;
  }

  .hero-cta {
    justify-content: center;
  }

  .hero-social {
    justify-content: center;
  }

  .hero-decoration {
    flex: none;
    width: 100%;
    max-width: 420px;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 48px;
  }

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

  .project-card,
  .project-card.reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }

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

  .contact-content {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

/* Mobile - 768px */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-actions .btn-outline {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .section {
    padding: 64px 20px;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .section-line {
    display: none;
  }

  .hero-name {
    letter-spacing: -1px;
  }

  .hero-decoration {
    display: none;
  }

  .experience-card {
    padding: 24px;
  }

  .exp-header {
    flex-direction: column;
  }

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

  .skill-category {
    padding: 24px;
  }

  .about-stats {
    grid-template-columns: 1fr 1fr;
  }

  .stat-card {
    padding: 20px 16px;
  }

  .stat-number {
    font-size: 1.5rem;
  }

  .contact-form-wrapper {
    padding: 24px;
  }

  .footer-top {
    flex-direction: column;
    gap: 16px;
  }
}

/* Small mobile - 480px */
@media (max-width: 480px) {
  .hero {
    padding-top: calc(var(--nav-height) + 40px);
    min-height: auto;
  }

  .hero-name {
    font-size: 2.25rem;
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta .btn {
    width: 100%;
    justify-content: center;
  }

  .about-stats {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .project-description p {
    font-size: 0.8125rem;
  }

  .toast {
    left: 16px;
    right: 16px;
    bottom: 16px;
    max-width: none;
  }
}