/*
  Yasin — Portfolio Styles
  Theme: Dark-first with purple accent, responsive, accessible
*/

/* CSS Reset (modern minimal) */
*,
*::before,
*::after {
  box-sizing: border-box;
}
* {
  margin: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  min-height: 100vh;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img,
picture,
svg,
video {
  display: block;
  max-width: 100%;
}
input,
button,
textarea,
select {
  font: inherit;
}

/* Color Scheme and Variables */
:root {
  color-scheme: dark light;
  --bg: #ffffff;
  --surface: #f6f6fb;
  --text: #1c1c28;
  --muted: #5e5e75;
  --border: #e4e4ef;
  --accent: #7c3aed; /* purple 700-ish */
  --accent-strong: #8b5cf6; /* purple 500 */
  --shadow-lg: 0 20px 50px -20px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 10px 30px -15px rgba(0, 0, 0, 0.25);
  --radius: 14px;
}

:root[data-theme="dark"] {
  --bg: #0b0b12;
  --surface: #121225;
  --text: #e7e7f0;
  --muted: #a6a6bb;
  --border: #2a2a40;
  --accent: #8b5cf6; /* neon-ish but not too bright */
  --accent-strong: #a78bfa; /* softer neon */
}

body {
  background:
    radial-gradient(
      1200px 600px at 15% -10%,
      rgba(167, 139, 250, 0.07),
      transparent
    ),
    radial-gradient(
      1200px 600px at 90% 10%,
      rgba(139, 92, 246, 0.06),
      transparent
    ),
    var(--bg);
  color: var(--text);
  font-family:
    system-ui,
    -apple-system,
    Segoe UI,
    Roboto,
    Ubuntu,
    Cantarell,
    Noto Sans,
    Helvetica Neue,
    Arial,
    sans-serif;
  line-height: 1.65;
}

.container {
  width: min(1100px, 92%);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
  width: auto;
  height: auto;
  background: var(--surface);
  color: var(--text);
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  box-shadow: var(--shadow-md);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(150%) blur(8px);
  background: color-mix(in lab, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.3px;
}
.brand-text {
  font-size: 1rem;
}

.site-nav {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.nav-list {
  display: none;
  list-style: none;
  align-items: center;
  gap: 0.75rem;
}
.nav-list.open {
  display: grid;
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  padding: 0.5rem;
  border-radius: 0.8rem;
  z-index: 100;
}
.nav-list.open .nav-link {
  display: block;
  white-space: nowrap;
}
.nav-link {
  text-decoration: none;
  color: var(--muted);
  padding: 0.4rem 0.6rem;
  border-radius: 0.5rem;
}
.nav-link:hover {
  color: var(--text);
}
.nav-link[aria-current="page"] {
  color: var(--text);
  background: color-mix(in lab, var(--accent) 17%, transparent);
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 0.7rem;
  padding: 0.45rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.icon-btn:focus-visible,
.btn:focus-visible {
  outline: 2px solid color-mix(in lab, var(--accent) 40%, white);
  outline-offset: 2px;
}

#mobile-nav-toggle {
  display: inline-flex;
}

.first-introduction {
  color: var(--accent);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 0.95rem;
  border-radius: 0.8rem;
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--surface);
  text-decoration: none;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset;
}
.btn:hover {
  border-color: color-mix(in lab, var(--accent) 30%, var(--border));
}
.btn.primary {
  background: linear-gradient(
    135deg,
    color-mix(in lab, var(--accent) 30%, transparent),
    color-mix(in lab, var(--accent-strong) 28%, transparent)
  );
  border-color: color-mix(in lab, var(--accent) 45%, var(--border));
  box-shadow: 0 10px 25px -12px
    color-mix(in lab, var(--accent) 60%, transparent);
}
.btn.ghost {
  background: transparent;
}
.btn[aria-disabled="true"] {
  opacity: 0.6;
  pointer-events: none;
}

.theme-label {
  display: none;
}
.theme-icon {
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background: radial-gradient(
    circle at 30% 30%,
    var(--accent-strong),
    var(--accent)
  );
  box-shadow:
    0 0 0 2px color-mix(in lab, var(--accent) 30%, transparent),
    0 0 24px -6px color-mix(in lab, var(--accent) 70%, transparent);
  display: inline-block;
}

/* Sections */
.section {
  padding: clamp(3rem, 6vw, 5rem) 0;
  scroll-margin-top: 72px;
}
.section h2 {
  font-size: clamp(1.4rem, 2.5vw, 1.8rem);
  margin-bottom: 1rem;
  letter-spacing: 0.3px;
}

/* Hero */
.hero .grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}
.hero-copy h1 {
  font-size: clamp(2rem, 6vw, 3.2rem);
  line-height: 1.1;
  margin-bottom: 0.75rem;
}
.gradient-text {
  background: linear-gradient(90deg, var(--text), var(--accent-strong));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lead {
  color: var(--text);
  font-size: clamp(1rem, 2.5vw, 1.15rem);
}
.subtle {
  color: var(--muted);
  margin-top: 0.4rem;
}
.actions {
  margin-top: 1rem;
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.social {
  list-style: none;
  display: flex;
  gap: 0.75rem;
  padding: 0;
  margin-top: 1rem;
}
.hero-art {
  width: min(520px, 100%);
  margin-inline: auto;
  filter: drop-shadow(0 40px 80px rgba(167, 139, 250, 0.08));
}

/* Cards */
.card {
  background: linear-gradient(
    180deg,
    color-mix(in lab, var(--surface) 85%, transparent),
    color-mix(in lab, var(--surface) 92%, transparent)
  );
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(1rem, 3vw, 1.25rem);
  box-shadow: var(--shadow-md);
}
.bullets {
  margin-top: 0.75rem;
  display: grid;
  gap: 0.35rem;
  padding-left: 1rem;
}

/* Skills */
.skills-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.skill h3 {
  margin-bottom: 0.4rem;
  font-size: 1rem;
  color: var(--muted);
}
.tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0;
  margin-top: 0.15rem;
}
.tag {
  background: color-mix(in lab, var(--accent) 16%, transparent);
  border: 1px solid color-mix(in lab, var(--accent) 30%, var(--border));
  color: var(--text);
  padding: 0.35rem 0.55rem;
  border-radius: 999px;
  font-size: 0.85rem;
}

/* Projects */
.projects-grid {
  display: grid;
  gap: 1.2rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.project-cover {
  border-radius: calc(var(--radius) - 6px);
  border: 1px solid var(--border);
}
.project-body {
  margin-top: 0.8rem;
  display: grid;
  gap: 0.5rem;
}
.project-title {
  font-size: 1.15rem;
}
.project-desc {
  color: var(--muted);
}
.project-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* Contact */
.contact-card {
  display: grid;
  gap: 0.6rem;
}
.contact-list {
  list-style: none;
  display: grid;
  gap: 0.4rem;
  padding: 0;
}
.contact-list .label {
  display: inline-block;
  width: 72px;
  color: var(--muted);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}
.footer-inner {
  padding: 1.2rem 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Nav responsive */
@media (min-width: 860px) {
  #mobile-nav-toggle {
    display: none;
  }
  .nav-list {
    display: inline-flex;
    position: static;
    background: none;
    border: none;
    box-shadow: none;
    padding: 0;
  }
}

/* Hero responsive */
@media (min-width: 900px) {
  .hero .grid-2 {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

/* Accessibility */
a {
  color: color-mix(in lab, var(--accent) 55%, var(--text));
}
a:hover {
  color: var(--accent-strong);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}