/* ============================================================
   SHARED DESIGN SYSTEM — Hazik Anwar Portfolio
   hazanwar.github.io/
   ============================================================ */

@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@300;400;600;700&display=swap");

/* === Tokens (dark — default) === */
:root {
  --bg: #0a0a0a;
  --surface: #141414;
  --surface-2: #1e1e1e;
  --border: rgba(255, 255, 255, 0.07);
  --nav-bg: rgba(10, 10, 10, 0.88);
  --accent: #00ffe1;
  --accent-rgb: 0, 255, 225;
  --blue: #3b82f6;
  --text: #f0f0f0;
  --text-muted: #888;
  --text-hover: #ffffff;
  --radius: 12px;
  --radius-lg: 20px;
  --nav-h: 64px;
  --max-w: 1100px;
  --t: 0.2s ease;
}

/* === Tokens (light) === */
[data-theme="light"] {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-2: #eef0f3;
  --border: rgba(0, 0, 0, 0.09);
  --nav-bg: rgba(245, 246, 248, 0.92);
  --accent: #0891b2;
  --accent-rgb: 8, 145, 178;
  --blue: #2563eb;
  --text: #111827;
  --text-muted: #6b7280;
  --text-hover: #000000;
}

/* === Reset === */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--t);
}
a:hover {
  color: var(--text-hover);
}

/* === Nav === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  gap: 1rem;
}
.nav-brand {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.25rem;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.9rem;
}
.nav-links a {
  color: var(--text-muted);
  transition: color var(--t);
}
.nav-links a:hover {
  color: var(--text);
}
.nav-cta {
  color: #000 !important;
  background: var(--accent);
  font-weight: 700;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.85rem;
  transition:
    box-shadow var(--t),
    transform var(--t) !important;
}
.nav-cta:hover {
  color: #000 !important;
  box-shadow: 0 4px 16px rgba(var(--accent-rgb), 0.4);
  transform: translateY(-1px);
}
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-muted);
  border-radius: 2px;
}

/* === Nav Social Icons === */
.nav-social {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.nav-social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition:
    border-color var(--t),
    color var(--t);
}
.nav-social-link:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.nav-social-link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* === Theme Toggle === */
.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition:
    border-color var(--t),
    color var(--t),
    background var(--t);
}
.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.theme-toggle svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
/* Dark mode: show sun (click to go light). Light mode: show moon (click to go dark). */
.icon-moon {
  display: block;
}
.icon-sun {
  display: none;
}
[data-theme="light"] .icon-moon {
  display: none;
}
[data-theme="light"] .icon-sun {
  display: block;
}

/* === Hero === */
.hero {
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-h);
  background: url("assets/hero-bg.jpg") center/cover no-repeat;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(10, 10, 10, 0.72) 0%,
    rgba(10, 10, 10, 0.9) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 3rem 2rem;
  max-width: 700px;
}
.hero-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto 2rem;
  border: 3px solid rgba(var(--accent-rgb), 0.5);
  box-shadow:
    0 0 40px rgba(var(--accent-rgb), 0.2),
    0 20px 50px rgba(0, 0, 0, 0.5);
  object-fit: cover;
}
.hero h1 {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  font-size: clamp(2.4rem, 7vw, 4rem);
  color: var(--accent);
  line-height: 1.05;
  margin-bottom: 0.5rem;
  text-shadow: 0 0 40px rgba(var(--accent-rgb), 0.4);
}
.hero-title {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.02em;
}
.hero-intro {
  font-size: 1rem;
  color: rgba(240, 240, 240, 0.75);
  margin-bottom: 2.5rem;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.75;
}

/* === Social Links === */
.social-links {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition:
    background var(--t),
    border-color var(--t),
    color var(--t),
    transform var(--t);
}
.social-link:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #000;
  transform: translateY(-2px);
}
.social-link svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* === Sections === */
section {
  padding: 5rem 2rem;
}
.container {
  max-width: var(--max-w);
  margin: 0 auto;
}
.section-title {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  color: var(--accent);
  margin-bottom: 3rem;
  text-shadow: 0 0 24px rgba(var(--accent-rgb), 0.22);
}

/* === About === */
.about {
  background: var(--surface);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}
.about-text p {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.8;
}
.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
}
.skill-tag {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 0.35rem 0.875rem;
  border-radius: 50px;
  transition:
    border-color var(--t),
    color var(--t);
}
.skill-tag:hover {
  border-color: rgba(var(--accent-rgb), 0.4);
  color: var(--accent);
}

/* === Achievements === */
.achievements {
  background: var(--bg);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  transition:
    border-color var(--t),
    transform var(--t);
}
.stat-card:hover {
  border-color: rgba(var(--accent-rgb), 0.35);
  transform: translateY(-3px);
}
.stat-number {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  text-shadow: 0 0 20px rgba(var(--accent-rgb), 0.3);
}
.stat-label {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* === Education === */
.education-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.edu-school {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-muted);
}
.edu-degree {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* === Projects === */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  transition:
    border-color var(--t),
    transform var(--t);
}
.project-card:hover {
  border-color: rgba(var(--accent-rgb), 0.28);
  transform: translateY(-3px);
}
.project-card-header {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.project-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  flex-shrink: 0;
  object-fit: cover;
}
.project-icon-placeholder {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  flex-shrink: 0;
  background: var(--surface-2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}
.project-card h3 {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  color: var(--accent);
  font-size: 1.2rem;
}
.project-card .project-role {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.125rem;
}
.project-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
  flex: 1;
}
.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: auto;
}
.project-link:hover {
  color: #fff;
}

/* === Apps section (Leap Launcher promo) === */
.apps {
  background: var(--surface);
}
.app-promo {
  display: flex;
  gap: 2rem;
  align-items: center;
  background: var(--surface-2);
  border: 1px solid rgba(var(--accent-rgb), 0.18);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  max-width: 700px;
  margin: 0 auto;
  transition:
    border-color var(--t),
    transform var(--t);
}
.app-promo:hover {
  border-color: rgba(var(--accent-rgb), 0.38);
  transform: translateY(-3px);
}
.app-promo-icon {
  width: 80px;
  height: 80px;
  border-radius: 18px;
  flex-shrink: 0;
  box-shadow: 0 0 30px rgba(var(--accent-rgb), 0.2);
}
.app-promo-info h3 {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  color: var(--accent);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}
.app-promo-info p {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.65;
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid rgba(var(--accent-rgb), 0.4);
  color: var(--accent);
  padding: 0.625rem 1.375rem;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  transition:
    background var(--t),
    color var(--t),
    border-color var(--t);
}
.btn-outline:hover {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}

/* === Footer === */
footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 2.5rem 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}
footer nav {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 0.75rem;
  flex-wrap: wrap;
}
footer a {
  color: var(--text-muted);
  transition: color var(--t);
}
footer a:hover {
  color: var(--accent);
}

/* === Responsive === */
@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .app-promo {
    flex-direction: column;
    text-align: center;
  }
}
@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .nav {
    padding: 0 1.25rem;
  }
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.25rem;
    gap: 1rem;
    font-size: 1rem;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-hamburger {
    display: flex;
  }
  section {
    padding: 3.5rem 1.25rem;
  }
  .hero {
    min-height: auto;
    padding: 5rem 1.25rem 4rem;
  }
  .hero-content {
    padding: 0;
  }
  .hero-avatar {
    width: 96px;
    height: 96px;
  }
  .social-links {
    gap: 0.75rem;
  }
}