/* ============================================================
   Botify.kz — Design System v2
   Light/Dark themes · Full mobile · Scroll animations
   Font: Plus Jakarta Sans
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

/* ── Theme Tokens ─────────────────────────────────────────── */
:root {
  /* Brand accent (same in both themes) */
  --cyan:          #06B6D4;
  --cyan-light:    #22D3EE;
  --cyan-dark:     #0891B2;
  --blue:          #3B82F6;
  --blue-light:    #60A5FA;
  --cyan-glow:     rgba(6,182,212,0.14);
  --border-cyan:   rgba(6,182,212,0.32);

  /* Animation */
  --transition:    160ms cubic-bezier(0.4,0,0.2,1);
  --transition-md: 260ms cubic-bezier(0.4,0,0.2,1);

  /* Radii */
  --radius:    12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
}

/* ── DARK THEME (default) ─────────────────────────────────── */
[data-theme="dark"] {
  --bg-base:       #0A0F1E;
  --bg-surface:    #111827;
  --bg-card:       #1a2235;
  --bg-card-hover: #1e2a40;
  --bg-elevated:   #243047;
  --bg-input:      rgba(255,255,255,0.05);

  --text-primary:  #F1F5F9;
  --text-secondary:#CBD5E1;
  --text-muted:    #94A3B8;
  --text-faint:    #64748B;

  --border:        rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.14);

  --shadow-sm:     0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:     0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg:     0 16px 48px rgba(0,0,0,0.6);
  --shadow-cyan:   0 8px 32px rgba(6,182,212,0.2);

  --navbar-bg:     rgba(10,15,30,0.82);
  --hero-gradient: linear-gradient(160deg, #0A0F1E 0%, #0C1525 60%, #0A0F1E 100%);

  --problem-icon-bg: rgba(239,68,68,0.12);
  --problem-icon-border: rgba(239,68,68,0.22);
  --problem-icon-color: #F87171;
}

/* ── LIGHT THEME ──────────────────────────────────────────── */
[data-theme="light"] {
  --bg-base:       #F8FAFF;
  --bg-surface:    #EEF2F9;
  --bg-card:       #FFFFFF;
  --bg-card-hover: #F0F5FF;
  --bg-elevated:   #E8EEF8;
  --bg-input:      #F1F5FB;

  --text-primary:  #0F172A;
  --text-secondary:#334155;
  --text-muted:    #64748B;
  --text-faint:    #94A3B8;

  --border:        rgba(15,23,42,0.1);
  --border-strong: rgba(15,23,42,0.18);

  --shadow-sm:     0 1px 3px rgba(15,23,42,0.08);
  --shadow-md:     0 4px 16px rgba(15,23,42,0.10);
  --shadow-lg:     0 16px 48px rgba(15,23,42,0.12);
  --shadow-cyan:   0 8px 32px rgba(6,182,212,0.18);

  --navbar-bg:     rgba(248,250,255,0.88);
  --hero-gradient: linear-gradient(160deg, #EEF4FF 0%, #F4F8FF 60%, #EEF4FF 100%);

  --problem-icon-bg: rgba(239,68,68,0.08);
  --problem-icon-border: rgba(239,68,68,0.18);
  --problem-icon-color: #EF4444;

  --cyan-glow:     rgba(6,182,212,0.10);
  --border-cyan:   rgba(6,182,212,0.25);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--transition-md), color var(--transition-md);
}

img { max-width: 100%; display: block; }
a  { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul  { list-style: none; }
svg { flex-shrink: 0; }

/* ── Typography ───────────────────────────────────────────── */
h1 { font-size: clamp(2rem, 5.5vw, 3.75rem); font-weight: 800; line-height: 1.12; letter-spacing: -0.025em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.625rem); font-weight: 700; line-height: 1.2;  letter-spacing: -0.018em; }
h3 { font-size: clamp(1.2rem, 2.2vw, 1.625rem); font-weight: 600; line-height: 1.3;  letter-spacing: -0.01em; }
h4 { font-size: 1.125rem; font-weight: 600; line-height: 1.4; }
p  { line-height: 1.75; color: var(--text-secondary); }

.text-cyan    { color: var(--cyan); }
.text-muted   { color: var(--text-muted); }
.text-center  { text-align: center; }
.text-primary { color: var(--text-primary); }
.gradient-text {
  background: linear-gradient(135deg, var(--cyan), var(--blue-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Layout ───────────────────────────────────────────────── */
.container {
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 28px;
}

.section    { padding: 100px 0; }
.section-sm { padding: 60px 0; }

.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }

/* ── Scroll-reveal animation classes ─────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.65s cubic-bezier(0.22,1,0.36,1),
              transform 0.65s cubic-bezier(0.22,1,0.36,1);
}
.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}
.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.65s cubic-bezier(0.22,1,0.36,1),
              transform 0.65s cubic-bezier(0.22,1,0.36,1);
}
.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}
.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.65s cubic-bezier(0.22,1,0.36,1),
              transform 0.65s cubic-bezier(0.22,1,0.36,1);
}
.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}
.reveal-scale {
  opacity: 0;
  transform: scale(0.94);
  transition: opacity 0.55s cubic-bezier(0.22,1,0.36,1),
              transform 0.55s cubic-bezier(0.22,1,0.36,1);
}
.reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

/* Staggered children */
.stagger > * { transition-delay: calc(var(--i, 0) * 80ms); }
.stagger > *:nth-child(1)  { --i: 0; }
.stagger > *:nth-child(2)  { --i: 1; }
.stagger > *:nth-child(3)  { --i: 2; }
.stagger > *:nth-child(4)  { --i: 3; }
.stagger > *:nth-child(5)  { --i: 4; }
.stagger > *:nth-child(6)  { --i: 5; }

/* ── Navbar ───────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 40px);
  max-width: 1220px;
  z-index: 200;
  background: var(--navbar-bg);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xl);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 62px;
  transition: background var(--transition-md), border-color var(--transition-md), box-shadow var(--transition-md);
  box-shadow: var(--shadow-sm);
}
.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar-logo {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  transition: color var(--transition-md);
  white-space: nowrap;
}
.navbar-logo span { color: var(--cyan); }

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}
.navbar-nav a {
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}
.navbar-nav a:hover  { color: var(--text-primary); background: var(--border); }
.navbar-nav a.active { color: var(--text-primary); background: var(--border-strong); }

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Theme toggle */
.theme-toggle {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}
.theme-toggle:hover { color: var(--cyan); border-color: var(--border-cyan); background: var(--cyan-glow); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-moon { display: block; }
.theme-toggle .icon-sun  { display: none; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }
[data-theme="light"] .theme-toggle .icon-sun  { display: block; }

.btn-nav {
  padding: 9px 18px;
  border-radius: 10px;
  font-size: 0.875rem;
  font-weight: 700;
  background: var(--cyan);
  color: #fff;
  transition: all var(--transition);
  white-space: nowrap;
  letter-spacing: -0.01em;
}
.btn-nav:hover {
  background: var(--cyan-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-cyan);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  transition: all var(--transition);
  cursor: pointer;
}
.hamburger:hover { border-color: var(--border-cyan); }
.hamburger span {
  display: block; width: 20px; height: 2px;
  background: var(--text-muted);
  border-radius: 2px;
  transition: transform 300ms, opacity 300ms;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 90px;
  left: 20px;
  right: 20px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 12px;
  z-index: 190;
  flex-direction: column;
  gap: 4px;
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px);
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.22,1,0.36,1), opacity 0.25s;
  pointer-events: none;
}
.mobile-menu.open {
  display: flex;
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.mobile-menu a {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.mobile-menu a:hover { background: var(--bg-elevated); color: var(--text-primary); }
.mobile-menu .btn-nav-mob {
  background: var(--cyan);
  color: #fff;
  font-weight: 700;
  text-align: center;
  border-radius: 10px;
  margin-top: 4px;
}
.mobile-menu .btn-nav-mob:hover { background: var(--cyan-dark); }

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 700;
  transition: all var(--transition-md);
  cursor: pointer;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan), var(--cyan-dark));
  color: #fff;
  border: 2px solid transparent;
  box-shadow: 0 2px 12px rgba(6,182,212,0.25);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(6,182,212,0.40);
  background: linear-gradient(135deg, var(--cyan-light), var(--cyan));
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-strong);
}
.btn-secondary:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--cyan-glow);
  transform: translateY(-2px);
}

.btn-ghost {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 2px solid var(--border);
}
.btn-ghost:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

.btn-sm { padding: 10px 20px; font-size: 0.875rem; }
.btn-icon { padding: 12px; }

/* ── Badge ────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  background: var(--cyan-glow);
  color: var(--cyan);
  border: 1px solid var(--border-cyan);
  margin-bottom: 20px;
}
.badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}
@keyframes pulse-dot {
  0%,100% { opacity:1; transform:scale(1); }
  50%      { opacity:.5; transform:scale(0.8); }
}
.badge-dot { animation: pulse-dot 2.4s ease-in-out infinite; }

/* ── Section Headers ──────────────────────────────────────── */
.section-header { margin-bottom: 60px; }
.section-header.text-center { text-align: center; }
.section-header p { margin-top: 16px; max-width: 620px; font-size: 1.0625rem; }
.section-header.text-center p { margin-left: auto; margin-right: auto; }

/* ── Cards ────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color var(--transition-md), transform var(--transition-md), box-shadow var(--transition-md);
  cursor: default;
}
.card:hover {
  border-color: var(--border-cyan);
  transform: translateY(-5px);
  box-shadow: var(--shadow-cyan);
}

.card-icon {
  width: 52px; height: 52px;
  border-radius: 13px;
  background: var(--cyan-glow);
  border: 1px solid var(--border-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--cyan);
  transition: transform var(--transition-md);
}
.card:hover .card-icon { transform: scale(1.08); }
.card-icon svg { width: 24px; height: 24px; }

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 130px 0 90px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--hero-gradient);
  z-index: 0;
}

/* Grid overlay */
.hero-bg::after {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(6,182,212,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(6,182,212,0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 30%, transparent 100%);
}

/* Radial glow */
.hero-bg::before {
  content: '';
  position: absolute;
  top: 15%; left: 50%;
  transform: translateX(-50%);
  width: 900px; height: 500px;
  background: radial-gradient(ellipse, rgba(6,182,212,0.10) 0%, transparent 68%);
  pointer-events: none;
}

.hero-content { position: relative; z-index: 1; max-width: 780px; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: 100px;
  background: var(--cyan-glow);
  border: 1px solid var(--border-cyan);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--cyan);
  margin-bottom: 28px;
  letter-spacing: 0.01em;
}

.hero h1 { margin-bottom: 24px; }
.hero h1 em { font-style: normal; color: var(--cyan); }

.hero-sub {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 44px;
  max-width: 580px;
  line-height: 1.75;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 72px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.hero-stat-item .stat-num { font-size: 2rem; font-weight: 800; color: var(--cyan); line-height:1; letter-spacing: -0.03em; }
.hero-stat-item .label { font-size: 0.8125rem; color: var(--text-muted); margin-top: 4px; }

/* ── Tech Logos strip ─────────────────────────────────────── */
.tech-logos {
  padding: 36px 0;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.tech-logos-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}
.tech-logo {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  transition: color var(--transition);
}
.tech-logo:hover { color: var(--text-secondary); }
.tech-logo svg { width: 26px; height: 26px; }
.tech-logos-label {
  font-size: 0.8125rem;
  color: var(--text-faint);
  white-space: nowrap;
  font-weight: 500;
}

/* ── Problem → Solution ───────────────────────────────────── */
.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.problem-list { display: flex; flex-direction: column; gap: 14px; }
.problem-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition-md), transform var(--transition-md);
}
.problem-item:hover { border-color: var(--problem-icon-border); transform: translateX(4px); }
.problem-icon {
  flex-shrink: 0;
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--problem-icon-bg);
  border: 1px solid var(--problem-icon-border);
  display: flex; align-items: center; justify-content: center;
  color: var(--problem-icon-color);
}
.problem-icon svg { width: 18px; height: 18px; }

.solution-card {
  background: var(--bg-card);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: 0 4px 24px rgba(6,182,212,0.08);
}

/* ── Services Grid ────────────────────────────────────────── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 22px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition-md);
  cursor: pointer;
}
.service-card:hover {
  border-color: var(--border-cyan);
  transform: translateY(-5px);
  box-shadow: var(--shadow-cyan);
}
.service-card h4 { margin: 16px 0 10px; }
.service-card p { font-size: 0.9rem; }
.service-features { margin-top: 16px; display: flex; flex-direction: column; gap: 6px; }
.service-feature {
  font-size: 0.8125rem;
  color: var(--text-muted);
  display: flex; align-items: center; gap: 7px;
}
.service-feature::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--cyan);
  flex-shrink: 0;
}

/* ── Cases ────────────────────────────────────────────────── */
.cases-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 28px; }
.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-md);
  cursor: pointer;
}
.case-card:hover { border-color: var(--border-cyan); box-shadow: var(--shadow-cyan); transform: translateY(-4px); }
.case-meta { display: flex; gap: 10px; margin-bottom: 18px; flex-wrap: wrap; }
.case-tag {
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
  background: rgba(59,130,246,0.1);
  color: var(--blue-light);
  border: 1px solid rgba(59,130,246,0.2);
}
.case-title { font-size: 1.125rem; font-weight: 700; margin-bottom: 8px; }
.case-problem { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 20px; line-height: 1.6; }
.case-results { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; }
.case-result {
  text-align: center;
  padding: 12px 8px;
  background: var(--cyan-glow);
  border: 1px solid var(--border-cyan);
  border-radius: 10px;
}
.case-result .num { font-size: 1.2rem; font-weight: 800; color: var(--cyan); }
.case-result .desc { font-size: 0.7rem; color: var(--text-muted); margin-top: 3px; }

/* ── Process Steps ────────────────────────────────────────── */
.process-steps {
  display: grid;
  grid-template-columns: repeat(6,1fr);
  gap: 0;
  position: relative;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 31px;
  left: calc(100%/12);
  right: calc(100%/12);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-cyan) 20%, var(--border-cyan) 80%, transparent);
}
.process-step { text-align: center; padding: 0 6px; position: relative; }
.process-num {
  width: 62px; height: 62px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--border-cyan);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--cyan);
  position: relative;
  z-index: 1;
  transition: background var(--transition-md), box-shadow var(--transition-md);
}
.process-step:hover .process-num { background: var(--cyan-glow); box-shadow: var(--shadow-cyan); }
.process-step h4 { font-size: 0.9rem; margin-bottom: 5px; }
.process-step p  { font-size: 0.8rem; color: var(--text-muted); }

/* ── Why Us ───────────────────────────────────────────────── */
.why-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 18px; }
.why-stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color var(--transition-md), transform var(--transition-md);
}
.why-stat:hover { border-color: var(--border-cyan); transform: translateY(-3px); }
.why-stat .num { font-size: 2.75rem; font-weight: 800; color: var(--cyan); line-height:1; letter-spacing: -0.03em; margin-bottom: 8px; }
.why-stat h4   { margin-bottom: 5px; }
.why-stat p    { font-size: 0.875rem; }

/* ── Architecture diagram ─────────────────────────────────── */
.arch-diagram { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; }
.arch-row { display: flex; gap: 8px; margin-bottom: 8px; }
.arch-row-2 { display: flex; gap: 8px; }
.arch-chip {
  flex: 1;
  padding: 12px 10px;
  border-radius: 10px;
  text-align: center;
  font-size: 0.8125rem;
  font-weight: 600;
  transition: transform var(--transition);
}
.arch-chip:hover { transform: scale(1.04); }
.arch-chip-blue   { background: rgba(59,130,246,0.1); border: 1px solid rgba(59,130,246,0.2); color: var(--blue-light); }
.arch-chip-cyan   { background: var(--cyan-glow); border: 1px solid var(--border-cyan); color: var(--cyan); }
.arch-chip-green  { background: rgba(34,197,94,0.08); border: 1px solid rgba(34,197,94,0.2); color: #4ADE80; }
.arch-arrow       { text-align:center; padding: 4px 0; color: var(--text-muted); font-size:1.2rem; }
.arch-label       { font-size: 0.8125rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: var(--text-muted); margin-bottom: 20px; }

/* ── CTA section ──────────────────────────────────────────── */
.cta-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-align: center;
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: 700px; height: 350px;
  background: radial-gradient(ellipse, rgba(6,182,212,0.10) 0%, transparent 70%);
  pointer-events: none;
}
.cta-content { position: relative; z-index: 1; }
.cta-section h2 { margin-bottom: 16px; }
.cta-section p  { margin-bottom: 40px; max-width: 540px; margin-left: auto; margin-right: auto; font-size: 1.0625rem; }
.cta-actions    { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta-checklist  { display: flex; gap: 32px; justify-content: center; margin-top: 40px; flex-wrap: wrap; }
.cta-check {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.875rem; color: var(--text-secondary);
}
.cta-check svg { width: 16px; height: 16px; color: var(--cyan); }

/* ── Feature list ─────────────────────────────────────────── */
.feature-list { display: flex; flex-direction: column; gap: 12px; }
.feature-item {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 16px 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition-md), transform var(--transition-md);
}
.feature-item:hover { border-color: var(--border-cyan); transform: translateX(4px); }
.feature-item svg { width: 20px; height: 20px; color: var(--cyan); margin-top: 2px; }
.feature-item-text h5 { font-size: 0.9375rem; margin-bottom: 3px; }
.feature-item-text p  { font-size: 0.875rem; }

/* ── Form ─────────────────────────────────────────────────── */
.form-group   { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-secondary);
}
.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.9375rem;
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}
.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(6,182,212,0.15);
  background: var(--bg-card);
}
.form-input::placeholder,
.form-textarea::placeholder { color: var(--text-faint); }
.form-textarea { resize: vertical; min-height: 120px; }
.form-select option { background: var(--bg-card); color: var(--text-primary); }

/* ── ROI Calculator ───────────────────────────────────────── */
.calc-card { background: var(--bg-card); border: 1px solid var(--border-cyan); border-radius: var(--radius-lg); padding: 40px; }
.calc-slider {
  width: 100%;
  height: 4px;
  accent-color: var(--cyan);
  margin: 8px 0;
  border-radius: 4px;
  cursor: pointer;
}
.calc-result {
  background: var(--cyan-glow);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius);
  padding: 22px;
  text-align: center;
}
.calc-result .big-num { font-size: 2.25rem; font-weight: 800; color: var(--cyan); line-height:1; }

/* ── Quiz ─────────────────────────────────────────────────── */
.quiz-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 40px; max-width: 660px; margin: 0 auto; }
.quiz-question { font-size: 1.125rem; font-weight: 600; margin-bottom: 20px; }
.quiz-options  { display: flex; flex-direction: column; gap: 10px; }
.quiz-option {
  padding: 14px 18px;
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  transition: all var(--transition-md);
  background: var(--bg-surface);
}
.quiz-option:hover { border-color: var(--border-cyan); color: var(--text-primary); background: var(--cyan-glow); }
.quiz-option.selected { border-color: var(--cyan); color: var(--cyan); background: var(--cyan-glow); }
.quiz-progress { display: flex; gap: 6px; margin-bottom: 28px; }
.quiz-dot { height: 4px; border-radius: 4px; background: var(--border-strong); flex: 1; transition: background 0.4s; }
.quiz-dot.done { background: var(--cyan); }

/* ── Demo window ──────────────────────────────────────────── */
.demo-window { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.demo-titlebar {
  background: var(--bg-elevated);
  padding: 11px 14px;
  display: flex; align-items: center; gap: 7px;
  border-bottom: 1px solid var(--border);
}
.demo-dot { width: 11px; height: 11px; border-radius: 50%; }
.demo-dot-red    { background: #EF4444; }
.demo-dot-yellow { background: #F59E0B; }
.demo-dot-green  { background: #22C55E; }
.demo-url {
  flex: 1; margin-left: 8px;
  padding: 5px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: 'Courier New', monospace;
}
.demo-body { padding: 22px; min-height: 300px; background: var(--bg-surface); }

/* ── Blog cards ───────────────────────────────────────────── */
.blog-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-md);
}
.blog-card:hover { border-color: var(--border-cyan); transform: translateY(-5px); box-shadow: var(--shadow-cyan); }
.blog-img {
  height: 190px;
  background: var(--bg-elevated);
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.blog-img-inner {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--cyan-glow);
  border: 1px solid var(--border-cyan);
  display: flex; align-items: center; justify-content: center;
  color: var(--cyan);
}
.blog-img-inner svg { width: 28px; height: 28px; }
.blog-body { padding: 22px; }
.blog-cat { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--cyan); margin-bottom: 9px; }
.blog-title { font-size: 1.0rem; font-weight: 700; margin-bottom: 9px; line-height: 1.45; color: var(--text-primary); }
.blog-excerpt { font-size: 0.875rem; color: var(--text-muted); margin-bottom: 18px; line-height: 1.65; }
.blog-meta { display: flex; align-items: center; justify-content: space-between; font-size: 0.8125rem; color: var(--text-muted); }

/* ── Contact ──────────────────────────────────────────────── */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.contact-channels { display: flex; flex-direction: column; gap: 14px; }
.contact-channel {
  display: flex; align-items: center; gap: 16px;
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition-md);
  text-decoration: none;
  color: inherit;
}
.contact-channel:hover { border-color: var(--border-cyan); transform: translateX(6px); box-shadow: var(--shadow-sm); }
.channel-icon { width: 44px; height: 44px; border-radius: 11px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.channel-icon svg { width: 22px; height: 22px; }
.channel-text h5 { margin-bottom: 2px; font-size: 0.9375rem; }
.channel-text p  { font-size: 0.875rem; color: var(--text-muted); }

/* ── Tabs ─────────────────────────────────────────────────── */
.tabs { display: flex; gap: 8px; margin-bottom: 40px; flex-wrap: wrap; }
.tab-btn {
  padding: 9px 18px;
  border-radius: 9px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: 1.5px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
}
.tab-btn:hover { color: var(--text-secondary); border-color: var(--border-strong); }
.tab-btn.active { background: var(--cyan-glow); color: var(--cyan); border-color: var(--border-cyan); }

/* ── Checklist ────────────────────────────────────────────── */
.checklist-items { display: flex; flex-direction: column; gap: 10px; }
.checklist-item {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 18px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.checklist-item:hover { border-color: var(--border-cyan); }
.checklist-box {
  width: 22px; height: 22px;
  border-radius: 6px;
  border: 2px solid var(--border-cyan);
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  color: var(--cyan);
}
.checklist-box svg { width: 13px; height: 13px; }

/* ── Page hero (inner pages) ──────────────────────────────── */
.page-hero {
  padding: 148px 0 84px;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: var(--hero-gradient);
}
.page-hero::before {
  content:'';
  position:absolute; top:0; left:50%; transform:translateX(-50%);
  width:800px; height:500px;
  background:radial-gradient(ellipse, rgba(6,182,212,0.10) 0%, transparent 65%);
  pointer-events:none;
}
.page-hero::after {
  content:'';
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(6,182,212,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(6,182,212,0.04) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 30%, black 20%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 30%, black 20%, transparent 100%);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { margin-bottom: 20px; }
.page-hero p  { font-size: 1.125rem; max-width: 620px; margin: 0 auto; }

/* ── Tab nav (solutions sticky) ──────────────────────────── */
.tab-nav-link {
  display: inline-block;
  padding: 16px 22px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 2.5px solid transparent;
  white-space: nowrap;
  transition: all var(--transition);
  cursor: pointer;
}
.tab-nav-link:hover  { color: var(--text-secondary); }
.tab-nav-link.active { color: var(--cyan); border-bottom-color: var(--cyan); }

/* ── Divider ──────────────────────────────────────────────── */
.divider { height: 1px; background: var(--border); }

/* ── Stat ─────────────────────────────────────────────────── */
.stat-num { font-size: 2.5rem; font-weight: 800; color: var(--cyan); line-height:1; letter-spacing:-0.03em; }

/* ── Footer ───────────────────────────────────────────────── */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 72px 0 32px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 52px; }
.footer-brand p { font-size: 0.9rem; margin-top: 14px; max-width: 300px; }
.footer-col h5 {
  font-size: 0.8125rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-muted); margin-bottom: 18px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 11px; }
.footer-col ul li a {
  font-size: 0.9rem; color: var(--text-secondary);
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--cyan); }
.footer-requisites {
  padding: 16px 0;
  border-top: 1px solid var(--border);
  text-align: center;
}
.footer-requisites p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 24px;
  flex-wrap: wrap; gap: 16px;
}
.footer-bottom p { font-size: 0.875rem; color: var(--text-muted); }
.footer-socials { display: flex; gap: 10px; margin-top: 20px; }
.footer-social {
  width: 36px; height: 36px;
  border-radius: 9px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
  transition: all var(--transition);
  cursor: pointer;
}
.footer-social:hover { background: var(--cyan-glow); border-color: var(--border-cyan); color: var(--cyan); transform: translateY(-2px); }
.footer-social svg { width: 16px; height: 16px; }

/* ── Utility ──────────────────────────────────────────────── */
.mt-4  { margin-top:16px; }
.mt-6  { margin-top:24px; }
.mt-8  { margin-top:32px; }
.mb-4  { margin-bottom:16px; }
.mb-6  { margin-bottom:24px; }
.mb-8  { margin-bottom:32px; }
.flex  { display:flex; }
.items-center { align-items:center; }
.gap-3 { gap:12px; }
.gap-4 { gap:16px; }
.w-full { width:100%; }
.justify-center { justify-content:center; }
.surface { background: var(--bg-surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE BREAKPOINTS
   ═══════════════════════════════════════════════════════════ */

/* ── ≤ 1100px — tablet landscape ─────────────────────────── */
@media (max-width: 1100px) {
  .navbar-nav { gap: 0; }
  .navbar-nav a { padding: 7px 9px; font-size: 0.8125rem; }
  .services-grid { grid-template-columns: repeat(2,1fr); }
  .process-steps { grid-template-columns: repeat(3,1fr); gap: 28px; }
  .process-steps::before { display: none; }
  .footer-grid { grid-template-columns: repeat(2,1fr); gap: 32px; }
}

/* ── ≤ 900px — tablet portrait ───────────────────────────── */
@media (max-width: 900px) {
  .navbar-nav { display: none; }
  .hamburger  { display: flex; }
  .btn-nav    { display: none; }

  .hero { padding: 110px 0 70px; }
  .hero-stats { gap: 28px; }

  .problem-grid  { grid-template-columns: 1fr; }
  .cases-grid    { grid-template-columns: 1fr; }
  .contact-grid  { grid-template-columns: 1fr; }
  .why-grid      { grid-template-columns: repeat(2,1fr); }

  .grid-2 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2,1fr); }

  .blog-grid { grid-template-columns: repeat(2,1fr); }
}

/* ── ≤ 680px — large phone ────────────────────────────────── */
@media (max-width: 680px) {
  .container { padding: 0 18px; }
  .section    { padding: 72px 0; }
  .section-sm { padding: 44px 0; }

  .navbar {
    width: calc(100% - 28px);
    padding: 0 16px;
    top: 10px;
    border-radius: 16px;
    height: 58px;
  }
  .mobile-menu { left: 14px; right: 14px; top: 80px; }

  h1 { font-size: clamp(1.75rem, 7vw, 2.5rem); }
  h2 { font-size: clamp(1.4rem, 5.5vw, 2rem); }
  h3 { font-size: clamp(1.1rem, 4vw, 1.375rem); }

  .hero { padding: 96px 0 60px; min-height: auto; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .hero-stats { gap: 20px; padding-top: 28px; margin-top: 48px; }
  .hero-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
  .hero-stat-item .stat-num { font-size: 1.6rem; }

  .section-header { margin-bottom: 40px; }
  .section-header p { font-size: 1rem; }

  .services-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: repeat(2,1fr); gap: 20px; }
  .why-grid      { grid-template-columns: 1fr; }

  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }

  .cases-grid { grid-template-columns: 1fr; }
  .case-results { grid-template-columns: repeat(2,1fr); }

  .cta-section { padding: 72px 0; }
  .cta-actions { flex-direction: column; align-items: center; }
  .cta-actions .btn { width: 100%; max-width: 340px; justify-content: center; }
  .cta-checklist { gap: 16px; flex-direction: column; align-items: flex-start; padding: 0 16px; }

  .tech-logos-inner { gap: 20px; }

  .calc-card { padding: 24px; }
  .quiz-card { padding: 24px; }
  .solution-card { padding: 24px; }

  .btn { padding: 13px 22px; font-size: 0.9rem; }
  .btn-sm { padding: 10px 16px; font-size: 0.8125rem; }
}

/* ── ≤ 400px — small phone ────────────────────────────────── */
@media (max-width: 400px) {
  .container { padding: 0 14px; }
  .hero-stats { grid-template-columns: 1fr; }
  .case-results { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .tabs { flex-direction: column; }
  .tab-btn { width: 100%; text-align: center; }
}

/* ── Stats row (cases page aggregate) ────────────────────── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
  padding: 12px 0;
}
.stat-item { display: flex; flex-direction: column; align-items: center; }

/* ── Solution features (index page) ──────────────────────── */
.solution-features { display: flex; flex-direction: column; gap: 10px; margin-top: 4px; }
.solution-feature {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.9375rem; color: var(--text-secondary);
}
.solution-feature svg { width: 18px; height: 18px; flex-shrink: 0; color: var(--cyan); }

/* ── FAQ (contacts page) ──────────────────────────────────── */
.faq-item { overflow: hidden; }
.faq-toggle {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  width: 100%; padding: 20px 24px;
  background: transparent; border: none;
  font-size: 1rem; font-weight: 600;
  color: var(--text-primary); font-family: inherit;
  cursor: pointer; text-align: left;
  transition: color var(--transition);
}
.faq-toggle:hover { color: var(--cyan); }
.faq-icon {
  flex-shrink: 0;
  transition: transform var(--transition-md);
  color: var(--text-muted);
}
.faq-body {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* ── Blog classes ─────────────────────────────────────────── */
.blog-featured-grid { display: grid; grid-template-columns: 280px 1fr; }
.blog-meta {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 0.8125rem; color: var(--text-muted); margin-top: 16px;
}

/* ── Contact page classes ─────────────────────────────────── */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.contact-channels { display: flex; flex-direction: column; gap: 16px; margin-top: 32px; }
.contact-channel {
  display: flex; align-items: center; gap: 16px;
  padding: 18px 20px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); transition: border-color var(--transition);
  text-decoration: none; color: inherit;
}
.contact-channel:hover { border-color: var(--border-cyan); }
.channel-icon {
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--cyan-glow); border: 1px solid var(--border-cyan);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; color: var(--cyan);
}
.channel-icon svg { width: 20px; height: 20px; }
.channel-text { display: flex; flex-direction: column; gap: 2px; }
.channel-text strong { font-size: 0.9rem; font-weight: 600; color: var(--text-primary); }
.channel-text span { font-size: 0.8125rem; color: var(--text-muted); }

/* ── Responsive fixes for new components ─────────────────── */
@media (max-width: 768px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .blog-featured-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 480px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .faq-toggle { padding: 16px 18px; font-size: 0.9375rem; }
  .faq-body { padding: 0 18px 16px; }
}

/* ── Reduced motion ───────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal, .reveal-left, .reveal-right, .reveal-scale {
    opacity: 1 !important;
    transform: none !important;
  }
}