/* === Reset & Base === */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-bg: #0a0a0a;
  --color-surface: #171717;
  --color-surface-hover: #1f1f1f;
  --color-border: #262626;
  --color-text: #fafafa;
  --color-text-secondary: #a3a3a3;
  --color-accent: #10b981;
  --color-accent-hover: #059669;
  --color-accent-glow: rgba(16, 185, 129, 0.15);

  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, monospace;

  --max-width: 960px;
  --section-gap: clamp(4rem, 8vw, 7rem);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--color-accent-hover);
}

img, svg {
  display: block;
  max-width: 100%;
}

/* === Layout === */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2rem);
}

.section {
  padding: var(--section-gap) 0;
}

/* === Header / Nav === */
.header {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header__logo {
  width: 32px;
  height: 32px;
}

.header__name {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
}

.header__name:hover {
  color: var(--color-text);
}

/* === Hero === */
.hero {
  text-align: center;
  padding: clamp(4rem, 12vw, 8rem) 0 var(--section-gap);
  position: relative;
}

.hero__glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -60%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero__logo {
  width: 80px;
  height: 80px;
  margin: 0 auto 2rem;
  position: relative;
  z-index: 1;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
}

.hero__tagline {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-secondary);
  max-width: 540px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* === Section Heading === */
.section__title {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  font-weight: 600;
  margin-bottom: 2rem;
  letter-spacing: -0.01em;
}

/* === App Cards === */
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.app-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 1.5rem;
  transition: border-color 0.2s, background-color 0.2s;
}

.app-card:hover {
  border-color: var(--color-accent);
  background: var(--color-surface-hover);
}

.app-card__header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.app-card__icon {
  width: 48px;
  height: 48px;
  background: var(--color-accent-glow);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.app-card__icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-accent);
}

.app-card__name {
  font-size: 1.125rem;
  font-weight: 600;
}

.app-card__desc {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  margin-bottom: 1rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  background: var(--color-accent-glow);
  color: var(--color-accent);
}

.badge__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* === About === */
.about__text {
  color: var(--color-text-secondary);
  max-width: 600px;
  font-size: 0.9375rem;
  line-height: 1.7;
}

.about__text + .about__text {
  margin-top: 0.75rem;
}

.about__detail {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-top: 1.5rem;
  font-family: var(--font-mono);
}

/* === Footer === */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.footer__links {
  display: flex;
  gap: 1.5rem;
}

/* === Privacy Policy Page === */
.policy {
  max-width: 680px;
}

.policy h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.policy .policy__date {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  margin-bottom: 2.5rem;
}

.policy h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.policy h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.policy p {
  color: var(--color-text-secondary);
  margin-bottom: 0.75rem;
  font-size: 0.9375rem;
  line-height: 1.7;
}

.policy ul {
  color: var(--color-text-secondary);
  margin-bottom: 0.75rem;
  padding-left: 1.5rem;
  font-size: 0.9375rem;
  line-height: 1.8;
}

.policy__contact {
  margin-top: 2rem;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* === Responsive === */
@media (max-width: 480px) {
  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}