/* ——— Tasarım dili: sakin, yüksek kontrast, düşük gürültü ——— */
:root {
  --bg-root: #06060a;
  --bg-raised: rgba(255, 255, 255, 0.03);
  --bg-panel: rgba(255, 255, 255, 0.045);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.12);
  --text: #ececf1;
  --text-dim: #8b8b96;
  --text-faint: #6b6b76;
  --accent: #8b7fd8;
  --accent-soft: rgba(139, 127, 216, 0.14);
  --accent-line: rgba(139, 127, 216, 0.45);
  --cyan: #6eb4c8;
  --radius: 10px;
  --radius-sm: 6px;
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
}

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

html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  letter-spacing: -0.011em;
  background-color: var(--bg-root);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

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

.tabular-nums {
  font-variant-numeric: tabular-nums;
}

.text-secondary-custom {
  color: var(--text-dim) !important;
}

.text-accent {
  color: var(--accent) !important;
}

/* Arka plan */
.cosmic-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 100% 70% at 50% -30%, rgba(40, 32, 72, 0.55) 0%, transparent 55%),
    var(--bg-root);
  overflow: hidden;
  pointer-events: none;
}

#starfield {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  opacity: 0.85;
}

.nebula {
  position: absolute;
  border-radius: 50%;
  filter: blur(88px);
  opacity: 0.22;
  pointer-events: none;
  mix-blend-mode: screen;
}

.nebula-1 {
  width: min(50vmax, 640px);
  height: min(50vmax, 640px);
  background: radial-gradient(circle, rgba(100, 80, 180, 0.5) 0%, transparent 70%);
  top: -15%;
  right: -5%;
  animation: nebula-a 36s var(--ease) infinite;
}

.nebula-2 {
  width: min(40vmax, 480px);
  height: min(40vmax, 480px);
  background: radial-gradient(circle, rgba(60, 120, 140, 0.35) 0%, transparent 68%);
  bottom: 5%;
  left: -12%;
  animation: nebula-b 40s var(--ease) infinite;
}

.nebula-3 {
  width: min(28vmax, 360px);
  height: min(28vmax, 360px);
  background: radial-gradient(circle, rgba(80, 90, 160, 0.4) 0%, transparent 72%);
  top: 48%;
  left: 40%;
  animation: nebula-c 30s var(--ease) infinite;
}

@keyframes nebula-a {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(-3%, 4%);
  }
}

@keyframes nebula-b {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(4%, -3%);
  }
}

@keyframes nebula-c {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(-4%, -2%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .nebula {
    animation: none;
    opacity: 0.14;
  }
}

/* Nav */
.navbar-pro {
  padding-top: 0.65rem;
  padding-bottom: 0.65rem;
  background: rgba(6, 6, 10, 0.72);
  backdrop-filter: blur(16px) saturate(1.2);
  border-bottom: 1px solid var(--border);
}

.navbar-pro .navbar-brand {
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.06em;
  color: var(--text) !important;
  text-decoration: none;
}

.navbar-pro .nav-link {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-dim) !important;
  padding: 0.4rem 0.65rem !important;
  border-radius: var(--radius-sm);
  transition: color 0.15s var(--ease), background 0.15s var(--ease);
}

.navbar-pro .nav-link:hover {
  color: var(--text) !important;
  background: var(--bg-raised);
}

.navbar-pro .nav-link.active {
  color: var(--text) !important;
  background: transparent !important;
  box-shadow: none !important;
  position: relative;
}

.navbar-pro .nav-link.active::after {
  content: "";
  position: absolute;
  left: 0.65rem;
  right: 0.65rem;
  bottom: 0.15rem;
  height: 1px;
  background: var(--accent-line);
  opacity: 0.9;
}

.navbar-pro .navbar-toggler {
  border-color: var(--border);
  padding: 0.35rem 0.55rem;
}

.navbar-pro .navbar-toggler:focus {
  box-shadow: 0 0 0 2px var(--accent-soft);
}

/* Hero */
.hero-section {
  position: relative;
  padding-top: 6.5rem;
  padding-bottom: 5rem;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-kicker {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 1rem;
}

.hero-title {
  font-size: clamp(2.35rem, 5.5vw, 3.65rem);
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 1.05;
  margin: 0 0 1rem;
  color: var(--text);
}

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

.hero-cursor {
  display: inline-block;
  width: 2px;
  height: 0.85em;
  margin-left: 2px;
  vertical-align: -0.05em;
  background: var(--cyan);
  animation: cursor-blink 1s step-end infinite;
}

@keyframes cursor-blink {
  50% {
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-cursor {
    animation: none;
    opacity: 0.7;
  }
}

.hero-line {
  font-size: 0.8125rem;
  color: var(--text-dim);
  margin: 0 0 1.25rem;
  letter-spacing: 0.02em;
}

.hero-lead {
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.7;
  color: var(--text-dim) !important;
  margin-bottom: 0;
}

.prose {
  color: var(--text-dim);
}

.prose.lead {
  font-size: 1.0625rem;
}

/* Butonlar */
.btn-primary-pro {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.35rem;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: #0a0a0c !important;
  background-color: var(--text) !important;
  border: 1px solid var(--text) !important;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: opacity 0.15s var(--ease), transform 0.15s var(--ease);
}

.btn-primary-pro:hover {
  opacity: 0.92;
  color: #0a0a0c !important;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.35rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text) !important;
  background: transparent !important;
  border: 1px solid var(--border-strong) !important;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: border-color 0.15s var(--ease), background 0.15s var(--ease);
}

.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.22) !important;
  background: var(--bg-raised) !important;
  color: var(--text) !important;
}

/* İstatistik */
.stat-card {
  padding: 1.25rem 1.35rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.stat-value {
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text);
  margin-bottom: 0.35rem;
}

.stat-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.hero-meta-label {
  font-size: 0.75rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero-meta-role {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text);
  margin-top: 0.2rem;
}

.status-pill {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  color: #9dd4b0;
  background: rgba(80, 160, 110, 0.12);
  border: 1px solid rgba(100, 180, 130, 0.28);
}

/* Scroll ipucu */
.hero-scroll-hint {
  position: absolute;
  right: clamp(1rem, 4vw, 2.5rem);
  bottom: clamp(1.25rem, 3vh, 2rem);
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
  text-decoration: none;
  transition: color 0.15s var(--ease);
}

.hero-scroll-hint:hover {
  color: var(--text-dim);
}

.hero-scroll-hint-arrow {
  font-size: 0.9rem;
  font-weight: 400;
  opacity: 0.7;
}

/* Bölümler */
.section-block {
  padding-block: clamp(4rem, 10vw, 6.5rem);
}

.section-alt {
  background: var(--bg-raised);
  border-block: 1px solid var(--border);
}

.section-label {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.5rem, 2.8vw, 1.875rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.2;
  color: var(--text);
  margin: 0;
}

.section-intro {
  font-size: 0.9375rem;
  color: var(--text-dim);
  margin: 0;
}

/* Hakkımda grid */
.info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

@media (min-width: 576px) {
  .info-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.info-item {
  padding: 1rem 1.15rem;
  background: var(--bg-panel);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.info-item-label {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.info-item-value {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
}

/* Kod penceresi */
.code-window {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.35);
}

.code-window-header {
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border);
}

.code-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
}

.code-dot--mid {
  background: rgba(255, 255, 255, 0.18);
}

.code-dot--dim {
  background: rgba(255, 255, 255, 0.08);
}

.code-window-filename {
  color: var(--text-faint);
  font-size: 0.75rem;
}

.code-window-body {
  color: #b4a8d4;
  overflow-x: auto;
}

.code-window-body code {
  font-size: 0.78rem;
  line-height: 1.75;
  color: inherit;
}

/* Yetenek kartları */
.skill-card {
  height: 100%;
  padding: 1.35rem 1.4rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s var(--ease);
}

.skill-card:hover {
  border-color: var(--border-strong);
}

.skill-card--emphasis {
  border-color: rgba(110, 180, 200, 0.22);
}

.skill-card--emphasis:hover {
  border-color: rgba(110, 180, 200, 0.35);
}

.skill-card-heading {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
  margin: 0 0 1rem;
}

.skill-card ul li {
  position: relative;
  padding-left: 0.85rem;
  margin-bottom: 0.4rem;
  font-size: 0.875rem;
  color: var(--text-dim);
  line-height: 1.5;
}

.skill-card ul li:last-child {
  margin-bottom: 0;
}

.skill-card ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-faint);
  opacity: 0.7;
}

@media (prefers-reduced-motion: reduce) {
  .skill-card {
    transition: none;
  }
}

/* Etiketler & projeler */
.tag-pill {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 400;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  color: var(--text-dim);
  background: var(--bg-raised);
  border: 1px solid var(--border);
}

.project-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s var(--ease);
}

.project-card:hover {
  border-color: var(--border-strong);
}

.project-card-body h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
}

.link-pro {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s var(--ease), color 0.15s var(--ease);
}

.link-pro:hover {
  color: #8ec9d8;
  border-bottom-color: rgba(110, 180, 200, 0.45);
}

/* Form */
.contact-form {
  padding: 1.75rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

@media (min-width: 992px) {
  .contact-form {
    padding: 2rem 2.25rem;
  }
}

.form-control-custom {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.85rem;
  font-size: 0.9375rem;
}

.form-control-custom:focus {
  background: rgba(0, 0, 0, 0.35);
  border-color: var(--border-strong);
  color: var(--text);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-control-custom::placeholder {
  color: var(--text-faint);
}

/* Footer */
.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
}

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

.footer-mark {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text-dim);
}

.footer-copy {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--text-faint);
}