/* ============================================
   TenTargets — Design System
   Inspired by ton.org aesthetic
   Dark, minimal, typographic
   ============================================ */

/* ── Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&display=swap');

/* ── CSS Variables ── */
:root {
  /* Colors */
  --color-bg:           #0A0B0D;   /* Almost black, not pure */
  --color-bg-card:      #111318;   /* Card surface */
  --color-bg-hover:     #161A22;   /* Card hover */
  --color-border:       rgba(255,255,255,0.08);
  --color-border-hover: rgba(255,255,255,0.16);

  --color-text-primary:   #FFFFFF;
  --color-text-secondary: rgba(255,255,255,0.55);
  --color-text-tertiary:  rgba(255,255,255,0.30);

  --color-accent:       #0098EA;   /* TON blue — можно заменить */
  --color-accent-hover: #00AAFF;

  /* Typography */
  --font:         'Inter', -apple-system, sans-serif;
  --font-size-xs:   12px;
  --font-size-sm:   14px;
  --font-size-base: 16px;
  --font-size-md:   18px;
  --font-size-lg:   24px;
  --font-size-xl:   36px;
  --font-size-2xl:  52px;
  --font-size-3xl:  72px;

  --tracking-tight:  -0.03em;
  --tracking-normal: -0.01em;
  --tracking-wide:    0.06em;

  --leading-tight:  1.1;
  --leading-normal: 1.5;
  --leading-loose:  1.7;

  /* Spacing */
  --space-xs:   8px;
  --space-sm:   16px;
  --space-md:   24px;
  --space-lg:   48px;
  --space-xl:   80px;
  --space-2xl:  120px;
  --space-3xl:  160px;

  /* Layout */
  --container:     1200px;
  --container-sm:  720px;
  --radius-sm:     8px;
  --radius-md:     12px;
  --radius-lg:     20px;
  --radius-xl:     28px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  font-size: var(--font-size-base);
  background: var(--color-bg);
  color: var(--color-text-primary);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ── Container ── */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}
.container-sm {
  max-width: var(--container-sm);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ── Typography ── */
.label {
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

h1, .h1 {
  font-size: clamp(40px, 6vw, var(--font-size-3xl));
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
}

h2, .h2 {
  font-size: clamp(28px, 4vw, var(--font-size-2xl));
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
}

h3, .h3 {
  font-size: var(--font-size-lg);
  font-weight: 500;
  letter-spacing: var(--tracking-normal);
  line-height: var(--leading-tight);
}

.body-lg {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  line-height: var(--leading-loose);
}

.body {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-loose);
}

.body-sm {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  line-height: var(--leading-normal);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font);
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: var(--tracking-normal);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-text-primary);
  color: var(--color-bg);
}
.btn-primary:hover {
  background: rgba(255,255,255,0.88);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover {
  border-color: var(--color-border-hover);
  background: var(--color-bg-card);
}

.btn-accent {
  background: var(--color-accent);
  color: #fff;
}
.btn-accent:hover {
  background: var(--color-accent-hover);
}

.btn-lg {
  font-size: var(--font-size-base);
  padding: 16px 32px;
  border-radius: var(--radius-lg);
}

/* ── Cards ── */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  transition: border-color 0.2s ease, background 0.2s ease;
}
.card:hover {
  border-color: var(--color-border-hover);
  background: var(--color-bg-hover);
}

.card-sm {
  padding: var(--space-md);
  border-radius: var(--radius-lg);
}

/* ── Sections ── */
.section {
  padding: var(--space-2xl) 0;
}

.section-hero {
  padding: var(--space-3xl) 0 var(--space-2xl);
  text-align: center;
}

/* ── Divider ── */
.divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-lg) 0;
}

/* ── Grid ── */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
}

/* ── Navbar ── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px var(--space-lg);
  background: rgba(10, 11, 13, 0.80);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  max-width: 100%;
}

.navbar-logo {
  font-size: var(--font-size-md);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
}

.navbar-links a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: color 0.2s;
}
.navbar-links a:hover {
  color: var(--color-text-primary);
}

/* ── Badge / Tag ── */
.badge {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--color-border);
  color: var(--color-text-tertiary);
  background: transparent;
}

/* ── Step number ── */
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-tertiary);
  flex-shrink: 0;
}

/* ── Stat / Number highlight ── */
.stat-number {
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  line-height: 1;
  color: var(--color-text-primary);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-top: var(--space-xs);
}

/* ── Ticker / Animated headline ── */
.ticker-wrap {
  display: inline-block;
  position: relative;
  overflow: hidden;
  vertical-align: bottom;
}

.ticker-item {
  display: block;
  position: absolute;
  left: 0; right: 0;
  opacity: 0;
  transform: translateY(100%);
  transition: opacity 0.45s ease, transform 0.45s ease;
  color: var(--color-accent);
}
.ticker-item.active {
  position: relative;
  opacity: 1;
  transform: translateY(0);
}
.ticker-item.out {
  position: absolute;
  opacity: 0;
  transform: translateY(-100%);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  :root {
    --space-lg:  24px;
    --space-xl:  48px;
    --space-2xl: 72px;
    --space-3xl: 96px;
  }
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
  .navbar-links {
    display: none;
  }
}