/* ============================================================
   Callina.ai — Brand CSS
   Built on MiraNext design system (Navy / Paper / Gold)
   Brand accent: Signal Violet #7A5AF8 (voice / AI)
   Teal remains as secondary accent (data / success-adjacent)
   ============================================================ */

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

:root {
  /* ---------- Inherited from MiraNext ---------- */
  --mn-navy-950: #050F1F;
  --mn-navy-900: #081A30;
  --mn-navy-800: #0B2545;
  --mn-navy-700: #13345F;
  --mn-navy-600: #1D4578;
  --mn-navy-500: #3560A0;
  --mn-navy-300: #95B0D3;
  --mn-navy-200: #C8D5E6;
  --mn-navy-100: #E5EBF3;
  --mn-navy-50:  #F3F6FB;

  --mn-teal-900: #0A5E57;
  --mn-teal-800: #0E8579;
  --mn-teal-700: #13B5A6;
  --mn-teal-100: #E1F5F3;
  --mn-teal-50:  #F1FAF8;

  --mn-gold-700: #9B8048;
  --mn-gold-500: #C9A86A;
  --mn-gold-100: #F4EBD4;
  --mn-gold-200: #E8D9A6;

  --mn-paper:    #FDFCF9;
  --mn-ink:      #1A1A1A;
  --mn-muted:    #5B6472;
  --mn-rule:     #D8D4CC;

  --mn-surface:        #FFFFFF;
  --mn-surface-alt:    #F5F6F8;
  --mn-border-mid:     #D0D4DA;
  --mn-grey-700:       #3A414B;
  --mn-grey-500:       #5B6472;
  --mn-grey-400:       #7D8591;
  --mn-grey-200:       #D0D4DA;
  --mn-grey-100:       #E5E7EB;
  --mn-grey-50:        #F5F6F8;

  --mn-success-fg:  #1A5C2A;
  --mn-success-bg:  #E6F4EB;
  --mn-warning-fg:  #7A5000;
  --mn-warning-bg:  #FFF8E6;
  --mn-critical-fg: #8B1A1A;
  --mn-critical-bg: #FDEAEA;

  /* ---------- Callina brand accent · VIOLET ---------- */
  --c-violet-950: #1A1240;
  --c-violet-900: #261A5C;
  --c-violet-800: #3D2A8E;
  --c-violet-700: #5B3FC2;
  --c-violet-600: #7A5AF8;   /* ★ primary accent */
  --c-violet-500: #9479FF;
  --c-violet-400: #B0A0FF;
  --c-violet-300: #C9BCFF;
  --c-violet-200: #E0D7FF;
  --c-violet-100: #EFEAFF;
  --c-violet-50:  #F7F4FF;

  /* Voice waveform glow */
  --c-glow: 0 0 0 4px rgba(122, 90, 248, 0.15);
  --c-shadow-violet: 0 16px 40px -12px rgba(122, 90, 248, 0.35), 0 4px 12px -2px rgba(122, 90, 248, 0.18);

  /* ---------- Type ---------- */
  --c-font-sans:    'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --c-font-mono:    'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;

  --c-tracking-caps: 0.14em;
  --c-tracking-tight: -0.02em;
  --c-tracking-snug: -0.01em;

  /* ---------- Spacing / radii / shadow ---------- */
  --c-radius-sm: 4px;
  --c-radius-md: 6px;
  --c-radius-lg: 10px;
  --c-radius-xl: 14px;
  --c-radius-2xl: 20px;
  --c-radius-pill: 999px;

  --c-shadow-sm: 0 1px 2px rgba(11, 37, 69, 0.06), 0 1px 3px rgba(11, 37, 69, 0.04);
  --c-shadow-md: 0 4px 10px -2px rgba(11, 37, 69, 0.08), 0 2px 6px -1px rgba(11, 37, 69, 0.04);
  --c-shadow-lg: 0 16px 32px -8px rgba(11, 37, 69, 0.12), 0 4px 10px -2px rgba(11, 37, 69, 0.06);
  --c-shadow-xl: 0 30px 60px -16px rgba(11, 37, 69, 0.18), 0 12px 24px -8px rgba(11, 37, 69, 0.08);

  --c-ease: cubic-bezier(0.2, 0, 0.2, 1);
}

/* ============================================================
   Reset / base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--mn-paper);
  color: var(--mn-ink);
  font-family: var(--c-font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ============================================================
   Type system
   ============================================================ */
.c-display {
  font-size: clamp(48px, 6vw, 76px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  font-weight: 700;
  color: var(--mn-navy-800);
  margin: 0;
}
.c-h1 {
  font-size: clamp(36px, 4vw, 52px);
  line-height: 1.08;
  letter-spacing: var(--c-tracking-tight);
  font-weight: 700;
  color: var(--mn-navy-800);
  margin: 0;
}
.c-h2 {
  font-size: clamp(28px, 2.6vw, 36px);
  line-height: 1.15;
  letter-spacing: var(--c-tracking-snug);
  font-weight: 600;
  color: var(--mn-navy-800);
  margin: 0;
}
.c-h3 {
  font-size: 22px;
  line-height: 1.25;
  font-weight: 600;
  color: var(--mn-navy-800);
  margin: 0;
}
.c-h4 {
  font-size: 18px;
  line-height: 1.3;
  font-weight: 600;
  color: var(--mn-ink);
  margin: 0;
}
.c-lead {
  font-size: 19px;
  line-height: 1.55;
  color: var(--mn-grey-700);
  margin: 0;
}
.c-body {
  font-size: 16px;
  line-height: 1.6;
  color: var(--mn-grey-700);
  margin: 0;
}
.c-small {
  font-size: 13px;
  line-height: 1.5;
  color: var(--mn-muted);
}

/* SIGNATURE: spaced caps numbered kicker — "06 · SECURITY" */
.c-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: var(--c-tracking-caps);
  text-transform: uppercase;
  color: var(--mn-gold-700);
}
.c-kicker--navy { color: var(--mn-navy-800); }
.c-kicker--gold { color: var(--mn-gold-700); }
.c-kicker--violet { color: var(--c-violet-700); }
.c-kicker--paper { color: var(--mn-gold-200); }

.c-kicker-num {
  font-family: var(--c-font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0;
  color: inherit;
  opacity: 0.65;
}

.c-mono { font-family: var(--c-font-mono); }
.c-tabular { font-variant-numeric: tabular-nums; }

/* ============================================================
   Layout helpers
   ============================================================ */
.c-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 32px;
}
.c-container--narrow {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 32px;
}

.c-section {
  padding: 96px 0;
  position: relative;
}
.c-section--tight { padding: 64px 0; }
.c-section--lg { padding: 120px 0; }

.c-section--paper { background: var(--mn-paper); }
.c-section--surface { background: var(--mn-surface); }
.c-section--alt { background: var(--mn-surface-alt); }
.c-section--navy {
  background: var(--mn-navy-800);
  color: var(--mn-navy-100);
}
.c-section--navy .c-h1, .c-section--navy .c-h2, .c-section--navy .c-h3 { color: #fff; }
.c-section--navy .c-lead, .c-section--navy .c-body { color: var(--mn-navy-200); }

/* gold hairline rule (signature) */
.c-rule-gold {
  height: 1px;
  background: var(--mn-gold-500);
  border: 0;
  width: 64px;
  margin: 0;
}
.c-rule-violet {
  height: 1px;
  background: var(--c-violet-600);
  border: 0;
  width: 64px;
  margin: 0;
}
.c-rule-navy {
  height: 1px;
  background: var(--mn-navy-800);
  border: 0;
  width: 64px;
  margin: 0;
}

/* ============================================================
   Buttons
   ============================================================ */
.c-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 20px;
  border-radius: var(--c-radius-md);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 160ms var(--c-ease);
  white-space: nowrap;
  text-decoration: none;
}
.c-btn--primary {
  background: var(--c-violet-600);
  color: #fff;
  box-shadow: 0 1px 0 rgba(255,255,255,0.2) inset, 0 6px 16px -4px rgba(122, 90, 248, 0.4);
}
.c-btn--primary:hover {
  background: var(--c-violet-700);
  transform: translateY(-1px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.2) inset, 0 10px 24px -4px rgba(122, 90, 248, 0.5);
}
.c-btn--navy {
  background: var(--mn-navy-800);
  color: #fff;
}
.c-btn--navy:hover {
  background: var(--mn-navy-900);
  transform: translateY(-1px);
}
.c-btn--ghost {
  background: transparent;
  color: var(--mn-navy-800);
  border-color: var(--mn-border-mid);
}
.c-btn--ghost:hover {
  background: var(--mn-surface);
  border-color: var(--mn-navy-800);
}
.c-btn--paper {
  background: rgba(255,255,255,0.08);
  color: #fff;
  border-color: rgba(255,255,255,0.18);
}
.c-btn--paper:hover {
  background: rgba(255,255,255,0.14);
  border-color: rgba(255,255,255,0.3);
}
.c-btn--lg { height: 52px; padding: 0 26px; font-size: 15px; }
.c-btn--sm { height: 36px; padding: 0 14px; font-size: 13px; }

/* ============================================================
   Cards / surfaces
   ============================================================ */
.c-card {
  background: var(--mn-surface);
  border: 1px solid var(--mn-border-mid);
  border-radius: var(--c-radius-lg);
  padding: 24px;
}
.c-card--elev { box-shadow: var(--c-shadow-md); border-color: transparent; }
.c-card--bordered { border-color: var(--mn-rule); }

/* ============================================================
   Badges / tags
   ============================================================ */
.c-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 24px;
  padding: 0 10px;
  border-radius: var(--c-radius-pill);
  background: var(--mn-navy-100);
  color: var(--mn-navy-800);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.c-tag--violet { background: var(--c-violet-100); color: var(--c-violet-800); }
.c-tag--success { background: var(--mn-success-bg); color: var(--mn-success-fg); }
.c-tag--gold { background: var(--mn-gold-100); color: var(--mn-gold-700); }
.c-tag--navy { background: var(--mn-navy-100); color: var(--mn-navy-800); }
.c-tag--neutral { background: var(--mn-surface-alt); color: var(--mn-grey-700); border: 1px solid var(--mn-rule); }
.c-tag--live {
  background: var(--mn-success-bg);
  color: var(--mn-success-fg);
}
.c-tag--live::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  animation: pulse 1.4s var(--c-ease) infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.3); }
}

/* ============================================================
   Nav (shared)
   ============================================================ */
.c-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(253, 252, 249, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--mn-rule);
}
.c-nav__inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 32px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.c-nav__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
  color: var(--mn-navy-800);
}
.c-nav__brand-mark {
  width: 28px; height: 28px;
  display: grid; place-items: center;
}
.c-nav__links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14px;
  font-weight: 500;
  color: var(--mn-grey-700);
}
.c-nav__links a {
  position: relative;
  transition: color 120ms;
}
.c-nav__links a:hover { color: var(--mn-navy-800); }
.c-nav__links a.is-active { color: var(--mn-navy-800); }
.c-nav__links a.is-active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -24px;
  height: 2px;
  background: var(--mn-gold-500);
}
.c-nav__cta {
  display: flex;
  align-items: center;
  gap: 12px;
}
.c-nav__lang {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 32px;
  padding: 0 10px;
  border-radius: var(--c-radius-md);
  font-size: 12px;
  font-weight: 600;
  color: var(--mn-grey-700);
  background: transparent;
  border: 1px solid var(--mn-rule);
  cursor: pointer;
}
.c-nav__lang:hover { background: var(--mn-surface); }
.c-nav__lang span.active { color: var(--mn-navy-800); }
.c-nav__lang span.inactive { color: var(--mn-grey-400); }
.c-nav__lang span.div { color: var(--mn-grey-300); }

/* ============================================================
   Footer
   ============================================================ */
.c-footer {
  background: var(--mn-navy-900);
  color: var(--mn-navy-200);
  padding: 72px 0 32px;
}
.c-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.c-footer h5 {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: var(--c-tracking-caps);
  text-transform: uppercase;
  color: var(--mn-gold-200);
  margin: 0 0 16px 0;
}
.c-footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.c-footer a { color: var(--mn-navy-200); font-size: 14px; transition: color 120ms; }
.c-footer a:hover { color: #fff; }
.c-footer__bottom {
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--mn-navy-300);
}
.c-footer__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
}

/* ============================================================
   Compliance row (logos / cert badges)
   ============================================================ */
.c-compliance {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 32px;
  padding: 20px 0;
}
.c-compliance__item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--mn-grey-500);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.c-compliance__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--mn-success-fg);
  opacity: 0.7;
}

/* ============================================================
   Phone visual / waveform
   ============================================================ */
.c-phone-frame {
  position: relative;
  border-radius: 36px;
  background: var(--mn-navy-900);
  padding: 16px;
  box-shadow: var(--c-shadow-xl);
  width: 320px;
  aspect-ratio: 9/19;
}
.c-phone-screen {
  background: linear-gradient(180deg, var(--mn-navy-950) 0%, var(--mn-navy-900) 100%);
  border-radius: 24px;
  height: 100%;
  padding: 22px 18px 18px;
  display: flex;
  flex-direction: column;
  color: #fff;
  position: relative;
  overflow: hidden;
}

/* ============================================================
   Utility
   ============================================================ */
.c-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.c-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.c-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

@media (max-width: 900px) {
  .c-grid-2, .c-grid-3, .c-grid-4 { grid-template-columns: 1fr; }
  .c-nav__links { display: none; }
}

.c-stack-sm > * + * { margin-top: 8px; }
.c-stack > * + * { margin-top: 16px; }
.c-stack-lg > * + * { margin-top: 24px; }

.c-flex { display: flex; }
.c-flex--center { align-items: center; }
.c-flex--gap { gap: 16px; }
.c-flex--gap-sm { gap: 8px; }
.c-flex--gap-lg { gap: 24px; }

.c-divider {
  height: 1px;
  background: var(--mn-rule);
  border: 0;
  margin: 0;
}