@import url("https://fonts.googleapis.com/css2?family=Syne:wght@600;700;800&family=Source+Sans+3:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap");

:root,
[data-theme="light"] {
  --ink: #0b1726;
  --ink-soft: #243447;
  --paper: #eef3f8;
  --paper-2: #f8fafc;
  --surface: rgba(255, 255, 255, 0.72);
  --muted: #5a6b7d;
  --accent: #0d8a8f;
  --accent-deep: #0a656a;
  --ember: #c97816;
  --line: rgba(11, 23, 38, 0.1);
  --line-strong: rgba(11, 23, 38, 0.18);
  --hero-fg: #f5f8fc;
  --hero-muted: rgba(245, 248, 252, 0.84);
  --nav-on-hero: rgba(245, 248, 252, 0.92);
  --shadow-soft: 0 24px 60px rgba(11, 23, 38, 0.1);
  --band-bg: #0b1726;
  --band-fg: #eef3f8;
  --band-muted: rgba(238, 243, 248, 0.76);
  --nopay-bg: #0b1726;
  --nopay-fg: rgba(248, 250, 252, 0.9);
  --grid: rgba(11, 23, 38, 0.045);
  --toggle-bg: rgba(11, 23, 38, 0.06);
  --toggle-fg: var(--ink);
}

[data-theme="dark"] {
  --ink: #e8eef6;
  --ink-soft: #c5d0de;
  --paper: #0a121c;
  --paper-2: #0f1a27;
  --surface: rgba(18, 30, 44, 0.75);
  --muted: #8fa0b5;
  --accent: #2eb8bf;
  --accent-deep: #5fd0d6;
  --ember: #e2a03a;
  --line: rgba(232, 238, 246, 0.1);
  --line-strong: rgba(232, 238, 246, 0.18);
  --hero-fg: #f5f8fc;
  --hero-muted: rgba(245, 248, 252, 0.84);
  --nav-on-hero: rgba(245, 248, 252, 0.92);
  --shadow-soft: 0 24px 60px rgba(0, 0, 0, 0.35);
  --band-bg: #061018;
  --band-fg: #e8eef6;
  --band-muted: rgba(232, 238, 246, 0.72);
  --nopay-bg: #050b12;
  --nopay-fg: rgba(232, 238, 246, 0.85);
  --grid: rgba(232, 238, 246, 0.035);
  --toggle-bg: rgba(232, 238, 246, 0.08);
  --toggle-fg: var(--ink);
}

:root {
  --font-display: "Syne", sans-serif;
  --font-body: "Source Sans 3", sans-serif;
  --max: 1180px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    radial-gradient(1000px 520px at 90% -8%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 62%),
    radial-gradient(760px 420px at -8% 18%, color-mix(in srgb, var(--ember) 12%, transparent), transparent 58%),
    linear-gradient(180deg, var(--paper) 0%, var(--paper-2) 100%);
  background-size: 48px 48px, 48px 48px, auto, auto, auto;
  min-height: 100vh;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.35s var(--ease), color 0.35s var(--ease);
}
img { max-width: 100%; display: block; }
a { color: var(--accent-deep); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

.s-nopay {
  background: var(--nopay-bg);
  color: var(--nopay-fg);
  text-align: center;
  padding: 0.5rem 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.015em;
  border-bottom: 1px solid var(--line);
}

.s-shell { width: min(var(--max), calc(100% - 2.25rem)); margin: 0 auto; }
.s-wrap { width: min(var(--max), calc(100% - 2.25rem)); margin: 0 auto; padding: 0 0 3.5rem; }

.s-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem 0;
  position: relative;
  z-index: 5;
}
.s-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.18rem;
  letter-spacing: -0.03em;
  color: var(--ink);
  text-decoration: none;
}
.s-brand:hover { text-decoration: none; color: var(--accent); }
.s-navlinks {
  display: flex;
  gap: 0.35rem 0.35rem;
  flex-wrap: wrap;
  align-items: center;
  font-size: 0.94rem;
  font-weight: 600;
}
.s-navlinks > a {
  color: var(--ink-soft);
  text-decoration: none;
  padding: 0.4rem 0.7rem;
  border-radius: 8px;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.s-navlinks > a:hover {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  text-decoration: none;
}

.s-theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0;
  padding: 3px;
  border-radius: 10px;
  background: var(--toggle-bg);
  border: 1px solid var(--line);
}
.s-theme-toggle button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  min-width: 52px;
  height: 32px;
  padding: 0 0.55rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  font-family: var(--font-body);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.s-theme-toggle button[aria-pressed="true"] {
  background: var(--surface);
  color: var(--toggle-fg);
  box-shadow: 0 1px 0 var(--line);
}

/* Hero */
.s-hero-bleed {
  position: relative;
  min-height: min(94vh, 860px);
  display: grid;
  align-items: end;
  color: var(--hero-fg);
  overflow: hidden;
  isolation: isolate;
}
.s-hero-bleed::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(115deg, rgba(6, 14, 24, 0.94) 0%, rgba(6, 14, 24, 0.78) 38%, rgba(6, 14, 24, 0.28) 100%),
    url("https://images.unsplash.com/photo-1581092160562-40aa08e78837?auto=format&fit=crop&w=2200&q=80") center / cover no-repeat;
  transform: scale(1.05);
  animation: heroKen 22s var(--ease) infinite alternate;
}
.s-hero-bleed::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(520px 260px at 18% 78%, color-mix(in srgb, var(--accent) 35%, transparent), transparent 70%),
    linear-gradient(180deg, transparent 50%, rgba(6, 14, 24, 0.55) 100%);
  pointer-events: none;
}
@keyframes heroKen {
  from { transform: scale(1.05) translate3d(0, 0, 0); }
  to { transform: scale(1.11) translate3d(-1.2%, -0.8%, 0); }
}

.s-hero-bleed .s-brand,
.s-hero-bleed .s-navlinks > a {
  color: var(--nav-on-hero);
}
.s-hero-bleed .s-navlinks > a:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}
.s-hero-bleed .s-theme-toggle {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.18);
}
.s-hero-bleed .s-theme-toggle button { color: rgba(245, 248, 252, 0.7); }
.s-hero-bleed .s-theme-toggle button[aria-pressed="true"] {
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
  box-shadow: none;
}

.s-hero-inner {
  width: min(var(--max), calc(100% - 2.25rem));
  margin: 0 auto;
  padding: 5.75rem 0 3.5rem;
}
.s-hero-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.85rem, 9vw, 5.6rem);
  line-height: 0.92;
  letter-spacing: -0.045em;
  margin: 0 0 1.1rem;
  max-width: 11ch;
  animation: riseIn 0.95s var(--ease) both;
}
.s-hero-lead {
  margin: 0;
  max-width: 36ch;
  font-size: clamp(1.08rem, 2.3vw, 1.32rem);
  color: var(--hero-muted);
  font-weight: 500;
  animation: riseIn 0.95s var(--ease) 0.1s both;
}
.s-cta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.75rem;
  animation: riseIn 0.95s var(--ease) 0.2s both;
}
@keyframes riseIn {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: none; }
}

.s-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.4rem;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.98rem;
  border: 0;
  cursor: pointer;
  background: var(--accent);
  color: #f4fffe;
  text-decoration: none;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease);
}
.s-btn:hover { background: var(--accent-deep); text-decoration: none; transform: translateY(-2px); }
.s-btn.ghost {
  background: transparent;
  color: inherit;
  border: 1px solid rgba(255, 255, 255, 0.35);
}
.s-btn.ghost:hover { border-color: #fff; background: rgba(255,255,255,0.08); }
.s-btn.on-light {
  background: var(--ink);
  color: var(--paper-2);
}
[data-theme="dark"] .s-btn.on-light {
  background: var(--accent);
  color: #041416;
}
.s-btn.on-light.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line-strong);
}
.s-btn.on-light.ghost:hover {
  border-color: var(--accent);
  color: var(--accent-deep);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.s-page-head { padding: 2rem 0 0.75rem; }
.s-page-head h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 4.5vw, 2.85rem);
  letter-spacing: -0.035em;
  margin: 0 0 0.45rem;
  line-height: 1.05;
}
.s-page-head p {
  margin: 0;
  color: var(--muted);
  max-width: 54ch;
  font-size: 1.08rem;
}

.s-section { padding: 4rem 0 0; }
.s-section-kicker {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.65rem;
}
.s-section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.55rem, 3.2vw, 2.2rem);
  letter-spacing: -0.035em;
  margin: 0 0 0.55rem;
  line-height: 1.1;
}
.s-section-lead {
  margin: 0 0 2rem;
  color: var(--muted);
  max-width: 50ch;
  font-size: 1.08rem;
}

.s-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem 2.25rem;
  counter-reset: step;
}
.s-step {
  position: relative;
  padding-top: 0.35rem;
  border-top: 2px solid var(--ink);
}
.s-step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.92rem;
  color: var(--accent);
  margin-bottom: 0.7rem;
  letter-spacing: 0.06em;
}
.s-step h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin: 0 0 0.45rem;
  letter-spacing: -0.025em;
}
.s-step p { margin: 0; color: var(--muted); font-size: 1rem; }

.s-mosaic {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1px;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  overflow: hidden;
  margin-top: 0.5rem;
}
.s-mosaic > * {
  background: var(--paper-2);
  padding: 1.35rem 1.4rem;
  min-height: 132px;
}
.s-mosaic .wide { grid-column: span 7; }
.s-mosaic .narrow { grid-column: span 5; }
.s-mosaic .third { grid-column: span 4; }
.s-mosaic h3 {
  font-family: var(--font-display);
  font-size: 1.12rem;
  margin: 0 0 0.4rem;
  letter-spacing: -0.02em;
}
.s-mosaic p { margin: 0; color: var(--muted); font-size: 0.98rem; }
.s-mosaic .visual {
  min-height: 220px;
  background:
    linear-gradient(155deg, rgba(6, 14, 24, 0.55), color-mix(in srgb, var(--accent) 40%, transparent)),
    url("https://images.unsplash.com/photo-1621905251189-08b45d6a269e?auto=format&fit=crop&w=1400&q=80") center / cover no-repeat;
  padding: 0;
}

.s-split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.75rem;
  align-items: center;
}
.s-split-visual {
  min-height: 360px;
  border-radius: 18px;
  background:
    linear-gradient(160deg, rgba(6, 14, 24, 0.5), color-mix(in srgb, var(--accent) 38%, transparent)),
    url("https://images.unsplash.com/photo-1581092918056-0c4c3acd3789?auto=format&fit=crop&w=1400&q=80") center / cover no-repeat;
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
}
.s-split-visual::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 42%;
  background: linear-gradient(180deg, transparent, rgba(6, 14, 24, 0.55));
}
.s-feature-list {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.95rem;
}
.s-feature-list li {
  display: grid;
  grid-template-columns: 12px 1fr;
  gap: 0.9rem;
  align-items: start;
  font-size: 1.05rem;
  color: var(--ink-soft);
  font-weight: 500;
}
.s-feature-list li::before {
  content: "";
  width: 10px;
  height: 10px;
  margin-top: 0.5rem;
  border-radius: 2px;
  background: var(--accent);
}

.s-rail {
  margin-top: 3.25rem;
  padding: 1.35rem 0;
  border-block: 1px solid var(--line);
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.s-rail-track {
  display: flex;
  gap: 2.5rem;
  width: max-content;
  animation: rail 32s linear infinite;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  color: var(--ink-soft);
  white-space: nowrap;
}
.s-rail-track span::after {
  content: "·";
  margin-left: 2.5rem;
  color: var(--accent);
}
@keyframes rail {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.s-band {
  margin-top: 4.25rem;
  padding: 3.25rem 0;
  background: var(--band-bg);
  color: var(--band-fg);
  position: relative;
  overflow: hidden;
}
.s-band::before {
  content: "";
  position: absolute;
  inset: -20% 35% auto auto;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 40%, transparent), transparent 68%);
  pointer-events: none;
}
.s-band .s-shell { position: relative; display: grid; gap: 1.5rem; }
@media (min-width: 860px) {
  .s-band .s-shell {
    grid-template-columns: 1.4fr 1fr;
    align-items: end;
  }
}
.s-band h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.65rem, 3.2vw, 2.35rem);
  letter-spacing: -0.035em;
  margin: 0 0 0.6rem;
  max-width: 16ch;
  line-height: 1.05;
}
.s-band p {
  margin: 0;
  color: var(--band-muted);
  max-width: 44ch;
  font-size: 1.05rem;
}
.s-band .s-btn { background: #f5f8fc; color: #0b1726; }
.s-band .s-btn:hover { background: #fff; }
.s-band .s-btn.ghost {
  background: transparent;
  color: var(--band-fg);
  border-color: rgba(245, 248, 252, 0.32);
}

.s-dir {
  display: grid;
  gap: 0;
  margin-top: 1.35rem;
  border-top: 1px solid var(--line);
}
.s-dir-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: baseline;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
  transition: padding-left 0.25s var(--ease), color 0.25s var(--ease);
}
.s-dir-item:hover {
  text-decoration: none;
  padding-left: 0.45rem;
  color: var(--accent);
}
.s-dir-item strong {
  font-family: var(--font-display);
  font-size: 1.18rem;
  letter-spacing: -0.025em;
}
.s-dir-meta { color: var(--muted); font-size: 0.92rem; }
.s-empty {
  padding: 1.75rem 0;
  color: var(--muted);
  font-size: 1.08rem;
  border-top: 1px solid var(--line);
}

.s-rules {
  display: grid;
  gap: 0;
  margin-top: 0.75rem;
  border-top: 1px solid var(--line);
}
.s-rule {
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
}
.s-rule h3 {
  font-family: var(--font-display);
  font-size: 1.12rem;
  margin: 0 0 0.4rem;
  letter-spacing: -0.02em;
}
.s-rule p { margin: 0; color: var(--muted); max-width: 70ch; }

.s-footer {
  margin-top: 4rem;
  padding: 1.85rem 0 2.75rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
  align-items: center;
}
.s-footer a { color: var(--ink-soft); font-weight: 600; }

.s-modal-bg {
  position: fixed; inset: 0; background: rgba(6, 14, 24, 0.55);
  display: none; align-items: flex-end; justify-content: center; z-index: 50;
  padding: 1rem;
  backdrop-filter: blur(6px);
}
.s-modal-bg.open { display: flex; }
.s-modal {
  background: var(--paper-2); color: var(--ink); border-radius: 16px;
  max-width: 480px; width: 100%; padding: 1.4rem 1.45rem; border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}
.s-modal h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.22rem;
  letter-spacing: -0.02em;
}
.s-modal p { color: var(--muted); font-size: 0.96rem; line-height: 1.55; margin: 0; }
.s-modal .row { display: flex; gap: 0.6rem; margin-top: 1.15rem; }

.mini-nav {
  display: flex; gap: 0.85rem; flex-wrap: wrap; padding: 0.9rem 0;
  border-bottom: 1px solid var(--line); margin-bottom: 1.35rem;
  font-size: 0.95rem; font-weight: 600;
}
.mini-nav a { color: var(--ink-soft); }
.theme-teknik_servis { --accent: #0d8a8f; --accent-deep: #0a656a; }
.theme-telefoncu { --accent: #2563eb; --accent-deep: #1d4ed8; }
.theme-bilgisayarci { --accent: #059669; --accent-deep: #047857; }
.theme-ses_goruntu { --accent: #db2777; --accent-deep: #be185d; }
.theme-uyducu { --accent: #ca8a04; --accent-deep: #a16207; }
.theme-elektronik { --accent: #e11d48; --accent-deep: #be123c; }

.s-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.25rem 1.4rem;
  margin: 1rem 0;
  backdrop-filter: blur(8px);
}

@media (max-width: 900px) {
  .s-steps, .s-split { grid-template-columns: 1fr; }
  .s-split-visual { min-height: 240px; order: -1; }
  .s-mosaic .wide,
  .s-mosaic .narrow,
  .s-mosaic .third { grid-column: span 12; }
  .s-hero-inner { padding-top: 4.75rem; }
}