/* =========================
   Ali DEMIR — Portfolio CSS
   ========================= */

/* ---- Reset / Base ---- */
*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
  line-height: 1.6;
  color: #eaf0ff;
  background:
    radial-gradient(1200px 600px at 15% 10%, rgba(125, 211, 252, 0.20), transparent 60%),
    radial-gradient(1000px 500px at 85% 15%, rgba(167, 139, 250, 0.18), transparent 55%),
    radial-gradient(900px 500px at 50% 110%, rgba(34, 211, 238, 0.12), transparent 55%),
    linear-gradient(180deg, #070b14 0%, #080d18 35%, #070b14 100%);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }
strong { font-weight: 700; }

:focus-visible {
  outline: 3px solid rgba(125, 211, 252, 0.85);
  outline-offset: 3px;
  border-radius: 10px;
}

/* ---- Layout ---- */
.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.section {
  padding: 4.25rem 0;
}

.section-header {
  margin-bottom: 1.6rem;
}

.section-header h2 {
  margin: 0;
  font-size: clamp(1.4rem, 1.1rem + 1vw, 2rem);
  letter-spacing: -0.02em;
}

.section-subtitle {
  margin: 0.6rem 0 0;
  color: rgba(234, 240, 255, 0.78);
  max-width: 70ch;
}

/* ---- Skip link ---- */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0.75rem;
  padding: 0.75rem 1rem;
  background: rgba(7, 11, 20, 0.95);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 14px;
  z-index: 9999;
}
.skip-link:focus { left: 1rem; }

/* ---- Header / Nav ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(7, 11, 20, 0.55);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none !important;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 14px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #0a1020;
  background:
    linear-gradient(135deg, rgba(125, 211, 252, 1), rgba(167, 139, 250, 1));
  box-shadow: 0 10px 30px rgba(0,0,0,0.35);
}

.brand-name {
  font-weight: 750;
  letter-spacing: -0.02em;
}

.nav-list {
  display: flex;
  gap: 1.1rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-list a {
  padding: 0.5rem 0.65rem;
  border-radius: 12px;
  color: rgba(234,240,255,0.88);
  text-decoration: none !important;
  border: 1px solid transparent;
}

.nav-list a:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.10);
}

.header-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.7rem;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.72rem 1rem;
  border-radius: 14px;
  font-weight: 650;
  letter-spacing: -0.01em;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.06);
  text-decoration: none !important;
  box-shadow: 0 10px 26px rgba(0,0,0,0.25);
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.16);
}

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

.btn-primary {
  color: #071019;
  border-color: transparent;
  background: linear-gradient(135deg, rgba(125, 211, 252, 1), rgba(167, 139, 250, 1));
}

.btn-primary:hover {
  background: linear-gradient(135deg, rgba(125, 211, 252, 0.92), rgba(167, 139, 250, 0.92));
}

.btn-ghost {
  background: rgba(255,255,255,0.03);
}

/* ---- Hero ---- */
.hero {
  padding: 4.25rem 0 2.25rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.55fr 0.95fr;
  gap: 1.25rem;
  align-items: start;
}

.eyebrow {
  margin: 0 0 0.6rem;
  color: rgba(234,240,255,0.70);
  font-weight: 600;
}

.hero-title {
  margin: 0;
  font-size: clamp(2.1rem, 1.4rem + 2.2vw, 3.1rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  margin: 1rem 0 1.2rem;
  color: rgba(234,240,255,0.82);
  max-width: 72ch;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 0.8rem 0 1.2rem;
}

.badge {
  font-size: 0.93rem;
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  color: rgba(234,240,255,0.90);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 0.9rem 0 1.4rem;
}

.hero-meta {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.4rem;
  color: rgba(234,240,255,0.78);
}

/* ---- Cards ---- */
.card {
  border-radius: 18px;
  padding: 1.25rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.10);
  box-shadow: 0 18px 60px rgba(0,0,0,0.30);
}

.card h3 {
  margin: 0 0 0.65rem;
  letter-spacing: -0.02em;
}

.muted { color: rgba(234,240,255,0.65); }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.checklist,
.bullets,
.skills-list,
.contact-list {
  margin: 0.7rem 0 0;
  padding-left: 1.1rem;
  color: rgba(234,240,255,0.82);
}

.checklist li::marker { content: "✓  "; }
.bullets li::marker { content: "•  "; }

/* ---- Hero Card (Profile) ---- */
.hero-card { position: relative; overflow: hidden; }

.hero-card::before {
  content: "";
  position: absolute;
  inset: -2px;
  background:
    radial-gradient(400px 200px at 20% 0%, rgba(125, 211, 252, 0.25), transparent 60%),
    radial-gradient(400px 200px at 80% 0%, rgba(167, 139, 250, 0.22), transparent 60%);
  pointer-events: none;
  filter: blur(0px);
}

.profile { position: relative; display: grid; gap: 1rem; }

.avatar {
  width: 78px;
  height: 78px;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,0.14);
  background:
    radial-gradient(120px 120px at 30% 30%, rgba(125, 211, 252, 0.30), transparent 60%),
    radial-gradient(120px 120px at 70% 30%, rgba(167, 139, 250, 0.24), transparent 60%),
    rgba(255,255,255,0.06);
}

.profile-name {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.profile-role { margin: 0.15rem 0 0; color: rgba(234,240,255,0.70); }
.profile-focus { margin: 0.6rem 0 0; color: rgba(234,240,255,0.82); }

.profile-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.link {
  padding: 0.5rem 0.7rem;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  text-decoration: none !important;
}
.link:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(255,255,255,0.16);
}

.profile-stats {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
  margin-top: 1rem;
}

.stat {
  padding: 0.8rem 0.8rem;
  border-radius: 16px;
  background: rgba(7, 11, 20, 0.35);
  border: 1px solid rgba(255,255,255,0.10);
}

.stat-label {
  margin: 0;
  font-size: 0.85rem;
  color: rgba(234,240,255,0.65);
}
.stat-value {
  margin: 0.2rem 0 0;
  font-weight: 750;
  letter-spacing: -0.02em;
}

/* ---- Projects ---- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.project {
  display: grid;
  gap: 1rem;
  min-height: 100%;
}

.project-tag {
  margin: 0 0 0.35rem;
  font-weight: 650;
  color: rgba(234,240,255,0.72);
}

.project-title {
  margin: 0 0 0.6rem;
  letter-spacing: -0.02em;
}

.project-desc {
  margin: 0;
  color: rgba(234,240,255,0.82);
}

.project-highlights {
  margin: 0;
  padding-left: 1.1rem;
  color: rgba(234,240,255,0.82);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.pill {
  font-size: 0.9rem;
  padding: 0.42rem 0.65rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  color: rgba(234,240,255,0.88);
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 0.2rem;
}

/* ---- Skills ---- */
.skills-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1rem;
}

.note {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 16px;
  background: rgba(125, 211, 252, 0.10);
  border: 1px solid rgba(125, 211, 252, 0.18);
}

/* ---- Timeline ---- */
.timeline {
  display: grid;
  gap: 1rem;
}

.timeline-meta {
  margin: 0.2rem 0 0.8rem;
  color: rgba(234,240,255,0.70);
}

.divider {
  border: none;
  height: 1px;
  background: rgba(255,255,255,0.10);
  margin: 1rem 0;
}

/* ---- Contact ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0.8rem 0 1rem;
  display: grid;
  gap: 0.75rem;
}

.contact-list li {
  padding: 0.75rem 0.9rem;
  border-radius: 16px;
  background: rgba(7, 11, 20, 0.35);
  border: 1px solid rgba(255,255,255,0.10);
}

.contact-label {
  display: block;
  font-size: 0.85rem;
  color: rgba(234,240,255,0.65);
  margin-bottom: 0.15rem;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

/* ---- Footer ---- */
.site-footer {
  padding: 2rem 0 2.6rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  background: rgba(7, 11, 20, 0.35);
  backdrop-filter: blur(10px);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-footer p { margin: 0; }

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .header-inner {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "brand actions"
      "nav nav";
  }
  .brand { grid-area: brand; }
  .nav { grid-area: nav; }
  .header-actions { grid-area: actions; }

  .hero-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .nav-list {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .btn { width: 100%; }
  .header-actions { flex-direction: column; align-items: stretch; }
  .hero-cta { gap: 0.6rem; }

  .brand-name { display: none; }
  .profile-stats { grid-template-columns: 1fr; }
}

/* ---- Subtle hover lift on cards ---- */
.card,
.project {
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}
.card:hover,
.project:hover {
  transform: translateY(-2px);
  border-color: rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.06);
}