/* Fontlar: Instrument Sans / Serif (OFL), portfolyo ile aynı aile */
@font-face {
  font-family: "Instrument Sans";
  src: url("/assets/fonts/InstrumentSans-Regular.ttf") format("truetype");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Instrument Sans";
  src: url("/assets/fonts/InstrumentSans-SemiBold.ttf") format("truetype");
  font-weight: 600;
  font-display: swap;
}
@font-face {
  font-family: "Instrument Serif";
  src: url("/assets/fonts/InstrumentSerif-Italic.ttf") format("truetype");
  font-style: italic;
  font-weight: 400;
  font-display: swap;
}

/* Renkler: marka indigo #4a4acf + fıstık yeşili #cfea45 */
:root {
  color-scheme: light;
  --bg: #f6f6fb;
  --surface: #ffffff;
  --text: #16162b;
  --muted: #55557a;
  --line: #e2e2ef;
  --brand: #4a4acf;
  --accent: #cfea45;
  --em-color: #4a4acf;
  --em-mark: rgba(207, 234, 69, 0.75);
  --button-bg: #4a4acf;
  --button-ink: #ffffff;
  --tag-bg: rgba(74, 74, 207, 0.1);
  --tag-ink: #3b3bb0;
  --panel-bg: #4a4acf;
  --panel-ink: #ffffff;
  --panel-muted: rgba(255, 255, 255, 0.82);
  --glow: rgba(74, 74, 207, 0.16);
  --radius: 20px;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #0f0f1c;
    --surface: #17172a;
    --text: #ececf6;
    --muted: #a7a7c4;
    --line: #2a2a45;
    --brand: #8a8af3;
    --em-color: #cfea45;
    --em-mark: transparent;
    --button-bg: #cfea45;
    --button-ink: #16162b;
    --tag-bg: rgba(207, 234, 69, 0.12);
    --tag-ink: #d9f06c;
    --panel-bg: #1d1d3a;
    --panel-ink: #ececf6;
    --panel-muted: #b9b9d6;
    --glow: rgba(138, 138, 243, 0.18);
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Instrument Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--brand);
  outline-offset: 3px;
  border-radius: 6px;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin-inline: auto;
  padding-inline: 16px;
}

@media (min-width: 768px) {
  .container {
    padding-inline: 32px;
  }
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  padding: 8px 14px;
  background: var(--button-bg);
  color: var(--button-ink);
  border-radius: 10px;
  z-index: 10;
}

.skip-link:focus {
  top: 12px;
}

/* Başlık çubuğu */
.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: #4a4acf;
  color: #cfea45;
  font-weight: 600;
  font-size: 1.05rem;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.header-nav > a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.975rem;
}

.header-nav > a:hover {
  color: var(--text);
}

@media (max-width: 540px) {
  .header-nav > a {
    display: none;
  }
}

.lang-switch {
  display: inline-flex;
  padding: 3px;
  gap: 2px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
}

.lang-switch button {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  cursor: pointer;
}

.lang-switch button[aria-pressed="true"] {
  background: var(--button-bg);
  color: var(--button-ink);
}

/* Giriş */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: 72px 64px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -40% -20% auto auto;
  width: 720px;
  height: 720px;
  background: radial-gradient(circle, var(--glow), transparent 65%);
  pointer-events: none;
}

.hero .container {
  position: relative;
}

@media (min-width: 768px) {
  .hero {
    padding-block: 112px 88px;
  }
}

.badge {
  display: inline-block;
  margin: 0 0 20px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--tag-bg);
  color: var(--tag-ink);
  font-size: 0.875rem;
  font-weight: 600;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.1;
}

h1 {
  max-width: 16ch;
  font-size: clamp(2.5rem, 6.5vw, 4.75rem);
}

h2 {
  font-size: clamp(2rem, 4.5vw, 3rem);
}

h3 {
  font-size: 1.375rem;
  letter-spacing: -0.015em;
}

h1 em,
h2 em {
  font-family: "Instrument Serif", Georgia, serif;
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--em-color);
  background: linear-gradient(transparent 64%, var(--em-mark) 64%, var(--em-mark) 92%, transparent 92%);
  padding-inline: 0.04em;
}

.lead {
  max-width: 60ch;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.15s ease, background-color 0.15s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--button-bg);
  color: var(--button-ink);
}

.button-ghost {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
}

.facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 40px;
  margin: 48px 0 0;
  padding: 24px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.facts strong {
  margin-right: 6px;
  color: var(--text);
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

/* Bölümler */
.section {
  padding-block: 64px;
}

@media (min-width: 768px) {
  .section {
    padding-block: 88px;
  }
}

.section-lead {
  max-width: 56ch;
  margin: 16px 0 0;
  color: var(--muted);
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: 24px;
  margin-top: 40px;
}

.app-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.app-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: var(--bg);
}

.app-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 10px;
  padding: 20px 22px 22px;
}

.app-body p {
  margin: 0;
  color: var(--muted);
  font-size: 0.975rem;
}

.app-body .tag {
  align-self: flex-start;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--tag-bg);
  color: var(--tag-ink);
  font-size: 0.8rem;
  font-weight: 600;
}

.stores {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 8px;
}

.stores a {
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
}

.stores a:hover {
  border-color: var(--brand);
  color: var(--brand);
}

/* Stüdyo paneli */
.studio {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

#studio .container {
  padding-block: 40px;
  border-radius: 28px;
  background: var(--panel-bg);
  color: var(--panel-ink);
}

@media (min-width: 768px) {
  #studio .container {
    padding: 56px;
  }
}

#studio .section-lead {
  color: var(--panel-muted);
}

#studio h2 em {
  color: #cfea45;
  background: none;
}

#studio .button-primary {
  background: #cfea45;
  color: #16162b;
}

@media (max-width: 767px) {
  #studio {
    padding-inline: 16px;
  }

  #studio .container {
    padding-inline: 24px;
  }
}

/* Alt bilgi */
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 28px;
  color: var(--muted);
  font-size: 0.925rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
}

.footer-inner p {
  margin: 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.footer-links a {
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--text);
}

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

  .button {
    transition: none;
  }

  .button:hover {
    transform: none;
  }
}