a {
  text-decoration: none;
}

/* ══════════════════════
   HERO
══════════════════════ */
.ai-hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 140px 20px 80px;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(220, 38, 38, 0.12) 0%, transparent 65%),
    radial-gradient(ellipse 40% 40% at 80% 60%, rgba(6, 182, 212, 0.06) 0%, transparent 60%),
    radial-gradient(at 0% 0%, rgba(220, 38, 38, 0.15) 0px, transparent 50%);
  overflow: hidden;
  position: relative;
}

.ai-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(220, 38, 38, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(220, 38, 38, 0.05) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 20%, black 30%, transparent 100%);
  animation: ai-grid-drift 20s linear infinite;
  pointer-events: none;
}

@keyframes ai-grid-drift {
  0%   { transform: translateY(0); }
  100% { transform: translateY(80px); }
}

.ai-hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  width: 100%;
  position: relative;
  z-index: 1;
}

/* Hero Badge */
.ai-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border: 1px solid rgba(6, 182, 212, 0.4);
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--gradient-cyan);
  background: rgba(6, 182, 212, 0.08);
  margin-bottom: 24px;
  animation: ai-fadeUp 0.6s ease both;
}

.ai-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--gradient-cyan);
  border-radius: 50%;
  animation: ai-pulse-cyan 2s infinite;
}

@keyframes ai-pulse-cyan {
  0%, 100% { box-shadow: 0 0 0 0 rgba(6, 182, 212, 0.6); }
  50%       { box-shadow: 0 0 0 6px rgba(6, 182, 212, 0); }
}

.ai-hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  animation: ai-fadeUp 0.6s 0.1s ease both;
  color: var(--white);
}

.ai-hero-title .line-red {
  display: block;
  background: linear-gradient(135deg, var(--gradient-orange), var(--primary-red), var(--gradient-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: ai-gradient-shift 3s ease infinite;
}

@keyframes ai-gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50%       { background-position: 100% 50%; }
}

.ai-hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--light-gray);
  line-height: 1.8;
  max-width: 520px;
  margin-bottom: 40px;
  animation: ai-fadeUp 0.6s 0.2s ease both;
}

.ai-hero-sub strong { color: var(--white); font-weight: 600; }

.ai-hero-ctas {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: ai-fadeUp 0.6s 0.3s ease both;
}

@keyframes ai-fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
/* ══════════════════════
   PHONE MOCKUP SHELL
══════════════════════ */
.ai-hero-visual {
  position: relative;
  animation: ai-fadeUp 0.8s 0.2s ease both;
}

@keyframes ai-fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.ai-phone-mockup {
  position: relative;
  width: 340px;
  margin: 0 auto;
  isolation: isolate;
}

.ai-phone-frame {
  /* background: #1c1c1e; */
  border-radius: 50px;
  padding: 12px;
  position: relative;
  z-index: 0;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.08),
    0 0 0 10px #0a0a0a,
    0 0 0 11px rgba(255,255,255,0.06),
    0 40px 100px rgba(0,0,0,0.8);
}

.ai-dynamic-island {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 110px;
  height: 34px;
  background: #000;
  border-radius: 20px;
  z-index: 10;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.06);
}

.ai-phone-screen {
  border-radius: 40px;
  overflow: hidden;
  position: relative;
  min-height: 38px;
  display: flex;
  flex-direction: column;
}

/* ══════════════════════
   CALL SCREEN
══════════════════════ */
.call-screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 0 24px;
  position: relative;
  min-height: 480px;
  overflow: hidden;
}

.call-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 200% 120% at 50% -10%, #2a6e3f 0%, transparent 55%),
    radial-gradient(ellipse 160% 100% at 80% 40%, #1a4d2e 0%, transparent 50%),
    radial-gradient(ellipse 180% 140% at 20% 80%, #0d3320 0%, transparent 60%),
    #111;
  z-index: 0;
}

.call-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.30);
}

.call-screen > * { position: relative; z-index: 1; }

/* Status bar */
.call-status-bar {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 42px 22px 0;
  font-size: 0.7rem;
  font-weight: 600;
  color: rgba(255,255,255,0.9);
}

.call-status-icons {
  display: flex;
  align-items: center;
  gap: 5px;
}

.call-type-label {
  margin-top: 12px;
  font-size: 0.72rem;
  font-weight: 500;
  color: rgba(255,255,255,0.6);
}

.call-name {
  margin-top: 4px;
  font-size: 1.65rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: -0.02em;
  text-align: center;
}

.call-timer {
  margin-top: 3px;
  font-size: 0.76rem;
  color: rgba(255,255,255,0.55);
  font-weight: 400;
  letter-spacing: 0.03em;
  font-variant-numeric: tabular-nums;
}

/* Avatar + ripple rings */
.call-avatar-wrap {
  position: relative;
  margin: 16px auto 0;
}

.call-ring {
  position: absolute;
  inset: -14px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.12);
  animation: ring-expand 2.4s ease-out infinite;
  pointer-events: none;
}
.call-ring-2 { inset: -28px; border-color: rgba(255,255,255,0.07); animation-delay: 0.8s; }
.call-ring-3 { inset: -44px; border-color: rgba(255,255,255,0.03); animation-delay: 1.6s; }

@keyframes ring-expand {
  0%   { opacity: 0; transform: scale(0.88); }
  40%  { opacity: 1; }
  100% { opacity: 0; transform: scale(1.06); }
}

.call-avatar {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: linear-gradient(145deg, #3d8b5e, #1a5c3a);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
  box-shadow:
    0 0 0 3px rgba(255,255,255,0.12),
    0 8px 32px rgba(0,0,0,0.4);
}

/* Waveform */
.call-waveform {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 20px;
  margin-top: 14px;
  opacity: 0.65;
}

.call-waveform .bar {
  width: 3px;
  border-radius: 3px;
  background: rgba(255,255,255,0.8);
  animation: wave-bar 1.1s ease-in-out infinite;
  transform-origin: bottom;
}

.call-waveform .bar:nth-child(1)  { height: 8px;  animation-delay: 0.00s; }
.call-waveform .bar:nth-child(2)  { height: 16px; animation-delay: 0.10s; }
.call-waveform .bar:nth-child(3)  { height: 22px; animation-delay: 0.20s; }
.call-waveform .bar:nth-child(4)  { height: 28px; animation-delay: 0.15s; }
.call-waveform .bar:nth-child(5)  { height: 28px; animation-delay: 0.05s; }
.call-waveform .bar:nth-child(6)  { height: 22px; animation-delay: 0.30s; }
.call-waveform .bar:nth-child(7)  { height: 18px; animation-delay: 0.25s; }
.call-waveform .bar:nth-child(8)  { height: 26px; animation-delay: 0.10s; }
.call-waveform .bar:nth-child(9)  { height: 18px; animation-delay: 0.20s; }
.call-waveform .bar:nth-child(10) { height: 12px; animation-delay: 0.35s; }
.call-waveform .bar:nth-child(11) { height: 24px; animation-delay: 0.05s; }
.call-waveform .bar:nth-child(12) { height: 14px; animation-delay: 0.15s; }
.call-waveform .bar:nth-child(13) { height: 8px;  animation-delay: 0.40s; }

@keyframes wave-bar {
  0%, 100% { transform: scaleY(0.3); opacity: 0.4; }
  50%       { transform: scaleY(1);   opacity: 1;   }
}

/* iOS 2x3 action grid */
.call-actions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  width: 100%;
  padding: 0 20px;
  margin-top: 20px;
}

.action-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  cursor: default;
}

.action-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(255,255,255,0.14);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.action-icon.action-icon--active {
  background: rgba(255,255,255,0.92);
  color: #000;
}

.action-label {
  font-size: 0.6rem;
  color: rgba(255,255,255,0.72);
  font-weight: 500;
  text-align: center;
}

/* Transcript */
.call-transcript {
  width: calc(100% - 40px);
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255,255,255,0.11);
  border-radius: 16px;
  padding: 9px 13px;
  margin-top: 14px;
}

.call-transcript-label {
  font-size: 0.55rem;
  color: rgba(255,255,255,0.38);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.call-transcript-text {
  font-size: 0.73rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.5;
}

.call-transcript-text em {
  color: #fff;
  font-style: normal;
  font-weight: 600;
}

.call-cursor {
  display: inline-block;
  width: 2px;
  height: 11px;
  background: #fff;
  border-radius: 1px;
  margin-left: 2px;
  vertical-align: middle;
  animation: blink-cursor 0.8s step-start infinite;
}

@keyframes blink-cursor {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* End call button */
.call-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin-top: 18px;
}

.ctrl-btn {
  width: 62px;
  height: 62px;
  border-radius: 50%;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: default;
  flex-shrink: 0;
}

.ctrl-btn.ctrl-end {
  background: #ff3b30;
  color: #fff;
  box-shadow: 0 8px 24px rgba(255,59,48,0.45);
  animation: end-pulse 2.5s ease-in-out infinite;
}

@keyframes end-pulse {
  0%, 100% { box-shadow: 0 0 0 0px rgba(255,59,48,0.4), 0 8px 24px rgba(255,59,48,0.4); }
  50%       { box-shadow: 0 0 0 10px rgba(255,59,48,0),  0 8px 24px rgba(255,59,48,0.4); }
}

/* ══════════════════════
   FLOATING TAGS
══════════════════════ */
.ai-float-tag {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  background: rgba(17,17,17,0.92);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  backdrop-filter: blur(8px);
  z-index: 10;
}

.ai-float-tag-icon {
  display: flex;
  align-items: center;
  color: #22c55e;
  flex-shrink: 0;
}

.ai-float-tag-1 { top: 30px;    left: -85px;  animation: ai-float1 4s ease-in-out infinite; }
.ai-float-tag-2 { top: 200px;   right: -95px; animation: ai-float2 4s 1s ease-in-out infinite; }
.ai-float-tag-3 { bottom: 90px; left: -75px;  animation: ai-float1 4s 2s ease-in-out infinite; }

@keyframes ai-float1 {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}
@keyframes ai-float2 {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(8px); }
}
/* ══════════════════════
   FLOW STRIP
══════════════════════ */
.ai-flow-strip {
  padding: 80px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  text-align: center;
  background: radial-gradient(ellipse 80% 60% at 50% 50%, rgba(220, 38, 38, 0.06), transparent 70%);
  position: relative;
  overflow: hidden;
}

.ai-flow-strip::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(220, 38, 38, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(220, 38, 38, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
  pointer-events: none;
}

.ai-flow-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gradient-cyan);
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.ai-flow-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.ai-flow-title-gradient {
  background: linear-gradient(135deg, var(--gradient-cyan), var(--primary-red), #a855f7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: ai-gradient-shift 4s ease infinite;
}

.ai-flow-sub {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: var(--light-gray);
  max-width: 560px;
  margin: 0 auto 60px;
  line-height: 1.8;
  position: relative;
  z-index: 1;
}

.ai-flow-track {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
  width: 100%;
}

.ai-flow-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  position: relative;
  padding: 10px;
  min-width: 110px;
  max-width: 160px;
  flex: 1;
  box-sizing: border-box;
}

.ai-flow-badge {
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.4);
  color: var(--gradient-cyan);
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 1.5px;
  padding: 3px 10px;
  border-radius: 50px;
  white-space: nowrap;
  z-index: 2;
}

.ai-flow-badge--green {
  background: rgba(34, 197, 94, 0.15);
  border-color: rgba(34, 197, 94, 0.4);
  color: #22c55e;
}

.ai-flow-circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  margin-top: 16px;
  flex-shrink: 0;
}

.ai-flow-node:hover .ai-flow-circle { transform: translateY(-4px); }

.ai-flow-circle--cyan {
  background: rgba(6, 182, 212, 0.1);
  border: 2px solid rgba(6, 182, 212, 0.5);
  color: var(--gradient-cyan);
  box-shadow: 0 0 24px rgba(6, 182, 212, 0.15);
}
.ai-flow-node:hover .ai-flow-circle--cyan {
  box-shadow: 0 0 40px rgba(6, 182, 212, 0.35);
  border-color: var(--gradient-cyan);
}

.ai-flow-circle--red {
  background: rgba(220, 38, 38, 0.12);
  border: 2px solid rgba(220, 38, 38, 0.55);
  color: #f87171;
  box-shadow: 0 0 24px rgba(220, 38, 38, 0.2);
  animation: ai-pulse-red 2.5s ease-in-out infinite;
}

@keyframes ai-pulse-red {
  0%, 100% { box-shadow: 0 0 24px rgba(220, 38, 38, 0.2); }
  50%       { box-shadow: 0 0 48px rgba(220, 38, 38, 0.4); }
}

.ai-flow-circle--purple {
  background: rgba(168, 85, 247, 0.1);
  border: 2px solid rgba(168, 85, 247, 0.45);
  color: #c084fc;
  box-shadow: 0 0 24px rgba(168, 85, 247, 0.15);
}
.ai-flow-node:hover .ai-flow-circle--purple {
  box-shadow: 0 0 40px rgba(168, 85, 247, 0.3);
  border-color: #c084fc;
}

.ai-flow-circle--green {
  background: rgba(34, 197, 94, 0.1);
  border: 2px solid rgba(34, 197, 94, 0.45);
  color: #4ade80;
  box-shadow: 0 0 24px rgba(34, 197, 94, 0.15);
}
.ai-flow-node:hover .ai-flow-circle--green {
  box-shadow: 0 0 40px rgba(34, 197, 94, 0.3);
  border-color: #4ade80;
}

.ai-flow-node-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.01em;
  text-align: center;
}

.ai-flow-node-sub {
  font-size: 0.78rem;
  color: #555;
  font-weight: 500;
  margin-top: -6px;
  text-align: center;
}

.ai-flow-arrow {
  display: flex;
  align-items: center;
  gap: 0;
  margin-top: 8px;
  flex-shrink: 0;
}

.ai-flow-arrow-line {
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, rgba(220, 38, 38, 0.25), rgba(6, 182, 212, 0.25));
  border-top: 1px dashed rgba(255, 255, 255, 0.1);
}

.ai-flow-arrow i { color: rgba(255, 255, 255, 0.15); font-size: 12px; }

/* ══════════════════════
   SHARED SECTION LABELS
══════════════════════ */
.ai-section-label {
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  color: white;
  margin-bottom: 14px;
  display: block;
}

.ai-section-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--white);
}

.ai-section-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--light-gray);
  max-width: 560px;
  line-height: 1.8;
  margin-bottom: 64px;
}

/* ══════════════════════
   FEATURES + CHANNELS
══════════════════════ */
.ai-features-section {
  padding: 80px 20px;
  background: radial-gradient(ellipse at center, rgba(184, 29, 29, 0.05), transparent 70%);
}

.ai-features-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
  width: 100%;
}

.ai-features-sticky { position: sticky; top: 120px; }

.ai-features-intro {
  font-size: 1rem;
  color: var(--light-gray);
  line-height: 1.6;
  margin-bottom: 40px;
}

.ai-features-list { display: flex; flex-direction: column; gap: 10px; }

.ai-feature-item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 20px;
  border-radius: 16px;
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  transition: all 0.3s;
  text-align: left;
  width: 100%;
  color: inherit;
  box-sizing: border-box;
}

.ai-feature-item:hover,
.ai-feature-item.active {
  background: linear-gradient(135deg, rgba(220, 38, 38, 0.05), rgba(26, 26, 26, 0.8));
  border-color: rgba(220, 38, 38, 0.15);
}

.ai-feat-text h4 { font-size: 1rem; font-weight: 700; margin-bottom: 6px; color: var(--white); }
.ai-feat-text p  { font-size: 1rem; color: var(--light-gray); line-height: 1.6; margin: 0; }

.ai-channels-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  padding-top: 8px;
  width: 100%;
}

.ai-channel-card {
  background: linear-gradient(135deg, rgba(220, 38, 38, 0.05), rgba(26, 26, 26, 0.8));
  border: 1px solid rgba(220, 38, 38, 0.15);
  border-radius: 16px;
  padding: 1.5rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  width: 100%;
  box-sizing: border-box;
}

.ai-channel-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gradient-orange-dark), var(--primary-red-dark));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.ai-channel-card:hover { transform: translateY(-5px); border-color: rgba(158, 15, 15, 0.3); }
.ai-channel-card:hover::before { transform: scaleX(1); }

.ai-channel-card h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; color: var(--white); }
.ai-channel-card p  { font-size: 1rem; color: var(--light-gray); line-height: 1.6; margin: 0; }

/* ══════════════════════
   USE CASES
══════════════════════ */
.ai-usecases-section { padding: 80px 20px; }

.ai-usecases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 380px), 1fr));
  gap: 1.5rem;
  width: 100%;
}

.ai-usecase-card {
  background: linear-gradient(135deg, rgba(220, 38, 38, 0.05), rgba(26, 26, 26, 0.8));
  border: 1px solid rgba(220, 38, 38, 0.15);
  border-radius: 16px;
  padding: 2rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  width: 100%;
  box-sizing: border-box;
}

.ai-usecase-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gradient-orange-dark), var(--primary-red-dark));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.ai-usecase-card:hover { transform: translateY(-5px); border-color: rgba(158, 15, 15, 0.3); }
.ai-usecase-card:hover::before { transform: scaleX(1); }

.ai-usecase-card h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 0.8rem; color: var(--white); }
.ai-usecase-card p  { font-size: 1rem; color: var(--light-gray); line-height: 1.6; flex-grow: 1; margin-bottom: 1.2rem; }

.ai-uc-tag {
  background: rgba(6, 182, 212, 0.15);
  color: var(--gradient-cyan);
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid rgba(6, 182, 212, 0.2);
  display: inline-block;
  margin-top: auto;
  align-self: flex-start;
}

.ai-uc-icon {
  width: 40px;
  height: 40px;
  object-fit: contain;
  display: block;
  opacity: 0.9;
  transition: opacity 0.3s ease;
}

.ai-uc-icon-wrapper { margin-bottom: 1.5rem; display: flex; align-items: center; justify-content: flex-start; }
.ai-usecase-card:hover .ai-uc-icon { opacity: 1; }

/* ══════════════════════
   FAQ
══════════════════════ */
.ai-faq-section {
  padding: 80px 20px;
  background: radial-gradient(ellipse at center, rgba(184, 29, 29, 0.05), transparent 70%);
}

.ai-faq-container { max-width: 760px; margin: 0 auto; }
.ai-faq-header    { text-align: center; margin-bottom: 4rem; }
.ai-faq-item      { border-bottom: 1px solid rgba(255, 255, 255, 0.07); }

.ai-faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  cursor: pointer;
  gap: 20px;
}

.ai-faq-question span:first-child {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--white);
  transition: color 0.3s;
}

.ai-faq-question:hover span:first-child { color: var(--accent-red); }

.ai-faq-toggle {
  width: 28px; height: 28px;
  flex-shrink: 0;
  background: rgba(220, 38, 38, 0.1);
  border: 1px solid rgba(220, 38, 38, 0.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--primary-red);
  transition: all 0.3s;
}

.ai-faq-item.open .ai-faq-toggle {
  background: var(--primary-red);
  color: var(--white);
  transform: rotate(45deg);
}

.ai-faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  font-size: 1.1rem;
  color: var(--light-gray);
  line-height: 1.75;
  padding: 0;
}

.ai-faq-item.open .ai-faq-answer { max-height: 200px; padding-bottom: 24px; }

/* ══════════════════════
   CTA BOTTOM
══════════════════════ */
.ai-cta-section {
  padding: 80px 20px;
  text-align: center;
  background: radial-gradient(ellipse at top, rgba(184, 29, 29, 0.1), transparent 50%);
  position: relative;
  overflow: hidden;
}

.ai-cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(220, 38, 38, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(220, 38, 38, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black, transparent);
  pointer-events: none;
}

.ai-cta-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1;
  color: var(--white);
}

.ai-cta-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--light-gray);
  max-width: 700px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
  position: relative;
  z-index: 1;
}

.ai-cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.ai-cta-note {
  margin-top: 1.5rem;
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.3);
  position: relative;
  z-index: 1;
}

/* ══════════════════════
   SCROLL REVEAL
══════════════════════ */
.ai-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.ai-reveal.visible { opacity: 1; transform: translateY(0); }

/* ══════════════════════
   RESPONSIVE — TABLET
══════════════════════ */
@media (max-width: 992px) {
  .ai-hero-inner {
    grid-template-columns: 1fr;
    gap: 50px;
    text-align: center;
  }

  .ai-hero-badge   { margin: 0 auto 24px; }
  .ai-hero-sub     { margin: 0 auto 40px; }
  .ai-hero-ctas    { justify-content: center; }
  .ai-phone-mockup { width: 350px; }

  .ai-float-tag-1,
  .ai-float-tag-2,
  .ai-float-tag-3  { display: none; }

  .ai-features-layout    { grid-template-columns: 1fr; gap: 40px; }
  .ai-features-sticky    { position: static; }
  .ai-channels-grid      { grid-template-columns: 1fr 1fr; }
  .ai-usecases-grid      { grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); }

  .ai-flow-node          { min-width: 90px; }
  .ai-flow-arrow-line    { width: 24px; }
}

/* ══════════════════════
   RESPONSIVE — MOBILE
══════════════════════ */
@media (max-width: 768px) {
  .ai-hero              { padding: 110px 16px 60px; }
  .ai-hero-ctas         { justify-content: center; }
  .ai-hero-title        { font-size: clamp(2rem, 8vw, 3rem); }
  .ai-channels-grid     { grid-template-columns: 1fr; gap: 1rem; }
  .ai-usecases-grid     { grid-template-columns: 1fr; }
  .ai-faq-question span:first-child { font-size: 1rem; }
  .ai-flow-track        { gap: 4px; }
  .ai-flow-arrow-line   { width: 16px; }
  .ai-flow-circle       { width: 64px; height: 64px; font-size: 20px; }
  .ai-flow-node         { min-width: 80px; max-width: 120px; padding: 6px; }
  .ai-flow-node-label   { font-size: 0.8rem; }
  .ai-flow-node-sub     { font-size: 0.7rem; }
  .ai-flow-title        { font-size: clamp(1.9rem, 6vw, 2.8rem); }
  .ai-flow-sub          { font-size: 0.95rem; margin-bottom: 40px; }
    .ai-phone-mockup      { width: 330px; }
  .ai-phone-screen      { min-height: 350px; }
  .call-screen          { min-height: 300px; padding: 20px 14px 18px; }
}

/* ══════════════════════
   RESPONSIVE — SMALL MOBILE
══════════════════════ */
@media (max-width: 540px) {
  .ai-flow-track        { flex-direction: column; align-items: center; gap: 4px; }
  .ai-flow-arrow        { transform: rotate(90deg); margin: 2px 0; }
  .ai-flow-arrow-line   { width: 28px; }
  .ai-flow-node         { max-width: 200px; width: 100%; }
    .ai-phone-mockup      { width: 340px; }
  .ai-phone-screen      { min-height: 350px; }
  .call-screen          { min-height: 300px; padding: 20px 14px 18px; }
}

/* ══════════════════════
   RESPONSIVE — XS
══════════════════════ */
@media (max-width: 468px) {
  .ai-hero              { padding: 100px 14px 50px; }
  .ai-features-section,
  .ai-usecases-section,
  .ai-faq-section,
  .ai-cta-section,
  .ai-flow-strip        { padding: 48px 25px; }
  .ai-channel-card      { padding: 1.25rem; }
  .ai-usecase-card      { padding: 1.25rem; }
  .ai-channel-card h3   { font-size: 1.1rem; }
  .ai-usecase-card h3   { font-size: 1.15rem; }
  .ai-phone-mockup      { width: 310px; }
  .ai-phone-screen      { min-height: 350px; }
  .call-screen          { min-height: 300px; padding: 20px 14px 18px; }
  .ai-section-title     { font-size: clamp(1.6rem, 6vw, 2.2rem); }
  .ai-section-sub       { font-size: 0.95rem; }
  .ai-flow-title        { font-size: clamp(1.6rem, 7vw, 2.2rem); }
  .ai-flow-sub          { font-size: 0.88rem; margin-bottom: 32px; }
  .ai-faq-answer        { font-size: 0.95rem; }
  .ai-cta-title         { font-size: clamp(2rem, 7vw, 3rem); }
}