/* =============================================
   DESIGN TOKENS & RESET
============================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #0d1117;
  --bg-card:     #131920;
  --bg-card-hover: #171f28;
  --border:      rgba(255,255,255,0.06);
  --border-hover:rgba(99,179,255,0.25);
  --text:        #e6edf3;
  --text-muted:  #7d8fa0;
  --accent:      #3b9eff;
  --accent-soft: rgba(59,158,255,0.12);
  --accent-glow: rgba(59,158,255,0.25);
  --violet:      #8b5cf6;
  --violet-soft: rgba(139,92,246,0.10);
  --radius:      20px;
  --radius-sm:   12px;
  --transition:  0.25s cubic-bezier(0.4,0,0.2,1);
  --font-display:'Sora', 'DM Sans', 'Segoe UI', sans-serif;
  --font-body:   'DM Sans', 'Segoe UI', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* =============================================
   UTILITY
============================================= */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 100px 0; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(59,158,255,0.2);
  padding: 5px 12px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-sub {
  color: var(--text-muted);
  font-size: 17px;
  max-width: 520px;
}

/* =============================================
   SCROLL REVEAL
============================================= */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* =============================================
   BUTTONS
============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  padding: 14px 28px;
  border-radius: 100px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), opacity var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 0 0 var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.15);
  transform: translateY(-2px);
}

.btn-lg {
  font-size: 17px;
  padding: 16px 36px;
}

.tg-icon { width: 18px; height: 18px; fill: currentColor; flex-shrink: 0; }

/* =============================================
   NAV
============================================= */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition), backdrop-filter var(--transition);
}
nav.scrolled {
  background: rgba(13,17,23,0.85);
  border-color: var(--border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 9px;
}

.logo-icon {
  width: 30px; height: 30px;
  background: linear-gradient(135deg, var(--accent), var(--violet));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: #FFF;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text); }

.nav-cta { font-size: 14px !important; padding: 10px 22px !important; }

/* =============================================
   HERO
============================================= */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding: 120px 24px 80px;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
}
.hero-glow-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(59,158,255,0.14) 0%, transparent 70%);
  top: -100px; left: 50%;
  transform: translateX(-50%);
  animation: pulse-glow-center 6s ease-in-out infinite alternate;
}
.hero-glow-2 {
  width: 360px; height: 360px;
  background: radial-gradient(circle, rgba(139,92,246,0.12) 0%, transparent 70%);
  bottom: 50px; right: -80px;
  animation: pulse-glow 8s ease-in-out infinite alternate-reverse;
}
.hero-glow-3 {
  width: 280px; height: 280px;
  background: radial-gradient(circle, rgba(59,158,255,0.08) 0%, transparent 70%);
  bottom: 100px; left: -60px;
  animation: pulse-glow 7s ease-in-out infinite alternate;
}

@keyframes pulse-glow {
  from { opacity: 0.7; transform: scale(1); }
  to   { opacity: 1;   transform: scale(1.1); }
}
@keyframes pulse-glow-center {
  from { opacity: 0.7; transform: translateX(-50%) scale(1); }
  to   { opacity: 1;   transform: translateX(-50%) scale(1.1); }
}

.hero-content { position: relative; z-index: 1; max-width: 740px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 32px;
}
.hero-badge-dot {
  width: 7px; height: 7px;
  background: #22c55e;
  border-radius: 50%;
  box-shadow: 0 0 6px #22c55e;
  animation: blink 2s ease-in-out infinite;
}
@keyframes blink {
  0%,100% { opacity: 1; } 50% { opacity: 0.4; }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(38px, 6.5vw, 76px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.035em;
  margin-bottom: 24px;
}

.hero-title span {
  background: linear-gradient(135deg, var(--accent) 0%, #7eb3ff 50%, var(--violet) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--text-muted);
  margin-bottom: 44px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-trust {
  margin-top: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
}

.trust-icon { color: var(--accent); }

/* =============================================
   FEATURES
============================================= */
#features { background: transparent; }

.features-header { text-align: center; margin-bottom: 60px; }
.features-header .section-sub { margin: 0 auto; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-hover);
  box-shadow: 0 16px 48px rgba(0,0,0,0.3), 0 0 0 1px rgba(59,158,255,0.08);
  background: var(--bg-card-hover);
}

.feature-icon {
  width: 44px; height: 44px;
  background: var(--accent-soft);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon svg {
  width: 22px; height: 22px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.65;
}

/* =============================================
   HOW IT WORKS
============================================= */
#how {
  background: linear-gradient(180deg, transparent 0%, rgba(59,158,255,0.03) 50%, transparent 100%);
}

.how-header { text-align: center; margin-bottom: 64px; }
.how-header .section-sub { margin: 0 auto; }

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 32px;
  left: calc(16.6% + 32px);
  right: calc(16.6% + 32px);
  height: 1px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--violet) 100%);
  opacity: 0.25;
}

.step {
  text-align: center;
  padding: 0 24px;
}

.step-num {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  position: relative;
  z-index: 1;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.step:hover .step-num {
  border-color: var(--accent);
  box-shadow: 0 0 24px rgba(59,158,255,0.2);
}

.step h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.step p { color: var(--text-muted); font-size: 14px; line-height: 1.65; }

/* =============================================
   PRICING
============================================= */
.pricing-header { text-align: center; margin-bottom: 60px; }
.pricing-header .section-sub { margin: 0 auto; }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  align-items: start;
}

.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 30px;
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.price-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}

.price-card.featured {
  border-color: rgba(59,158,255,0.35);
  background: linear-gradient(135deg, rgba(59,158,255,0.06) 0%, rgba(139,92,246,0.06) 100%);
  box-shadow: 0 0 0 1px rgba(59,158,255,0.1), 0 12px 48px rgba(0,0,0,0.3);
}

.price-card.featured:hover {
  box-shadow: 0 0 0 1px rgba(59,158,255,0.25), 0 20px 64px rgba(0,0,0,0.4), 0 0 48px rgba(59,158,255,0.08);
}

.best-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--accent), var(--violet));
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 16px;
  border-radius: 100px;
  white-space: nowrap;
}

/* ─── Discount Badge ─── */
.discount-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 14px;
  padding: 5px 12px 5px 8px;
  border-radius: 100px;
  border: 1px solid rgba(34, 197, 94, 0.28);
  background: linear-gradient(135deg, rgba(34,197,94,0.12) 0%, rgba(16,185,129,0.08) 100%);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #4ade80;
  position: relative;
  overflow: hidden;
}

.discount-badge::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(34,197,94,0.08) 50%, transparent 100%);
  animation: shimmer-discount 2.8s ease-in-out infinite;
}

@keyframes shimmer-discount {
  0%   { transform: translateX(-100%); }
  60%  { transform: translateX(100%); }
  100% { transform: translateX(100%); }
}

.discount-badge-icon {
  width: 16px; height: 16px;
  background: linear-gradient(135deg, #22c55e, #10b981);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.discount-badge-icon svg {
  width: 9px; height: 9px;
  fill: #fff;
}

.discount-badge-text {
  position: relative;
  z-index: 1;
}

.discount-badge-text s {
  color: rgba(34,197,94,0.45);
  font-weight: 600;
  text-decoration-color: rgba(34,197,94,0.35);
  margin-right: 3px;
}

.price-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.price-amount {
  font-family: var(--font-display);
  font-size: 46px;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 6px;
}

.price-amount sup {
  font-size: 22px;
  font-weight: 600;
  vertical-align: super;
  margin-right: 2px;
}

.price-period {
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 24px;
}

.price-divider {
  height: 1px;
  background: var(--border);
  margin-bottom: 24px;
}

.price-desc {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 28px;
}

.price-card .btn { width: 100%; justify-content: center; }

/* ─── Period Toggle ─── */
.period-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 4px;
  margin-top: 32px;
}

.period-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 20px;
  border-radius: 100px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}

.period-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--violet));
  color: #fff;
  font-weight: 600;
}

.toggle-save-hint {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: linear-gradient(135deg, #22c55e, #10b981);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.period-btn.active .toggle-save-hint {
  background: rgba(255,255,255,0.75);
  -webkit-background-clip: text;
  background-clip: text;
}

/* ─── 4-column grid ─── */
.pricing-grid-4 {
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  align-items: start;
}

/* ─── Plan icon ─── */
.price-plan-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(59,158,255,0.08);
  border: 1px solid rgba(59,158,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.price-plan-icon svg {
  width: 18px;
  height: 18px;
  stroke: var(--accent);
}

.price-card.featured .price-plan-icon {
  background: rgba(139,92,246,0.1);
  border-color: rgba(139,92,246,0.25);
}

.price-card.featured .price-plan-icon svg { stroke: var(--violet); }

/* ─── Features list ─── */
.price-features {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.price-features li {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.4;
}

.price-features li::before {
  content: '';
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(59,158,255,0.1);
  border: 1px solid rgba(59,158,255,0.2);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 10 10' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M2 5.5L4 7.5L8 3' stroke='%233b9eff' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round' fill='none'/%3E%3C/svg%3E");
  background-size: 10px;
  background-repeat: no-repeat;
  background-position: center;
}

.price-card.featured .price-features li::before {
  background-color: rgba(139,92,246,0.1);
  border-color: rgba(139,92,246,0.25);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 10 10' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M2 5.5L4 7.5L8 3' stroke='%238b5cf6' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round' fill='none'/%3E%3C/svg%3E");
  background-size: 10px;
  background-repeat: no-repeat;
  background-position: center;
}

/* ─── Save badge ─── */
.price-save-badge {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #4ade80;
  background: linear-gradient(135deg, rgba(34,197,94,0.12) 0%, rgba(16,185,129,0.08) 100%);
  border: 1px solid rgba(34,197,94,0.25);
  border-radius: 100px;
  padding: 4px 10px;
  margin-bottom: 8px;
}

/* =============================================
   FAQ
============================================= */
#faq {
  background: linear-gradient(180deg, transparent 0%, rgba(139,92,246,0.03) 50%, transparent 100%);
}

.faq-header { text-align: center; margin-bottom: 56px; }

.faq-list { max-width: 680px; margin: 0 auto; }

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color var(--transition);
  isolation: isolate;
}
.faq-item .faq-q,
.faq-item .faq-a-inner { opacity: 1 !important; }

.faq-item.open { border-color: rgba(59,158,255,0.2); }

.faq-q {
  width: 100%;
  background: var(--bg-card);
  border: none;
  color: #e6edf3;
  opacity: 1 !important;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  text-align: left;
  gap: 16px;
  transition: background var(--transition);
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  will-change: background-color;
  user-select: none;
  -webkit-user-select: none;
}

.faq-q:hover { background: var(--bg-card-hover); }
.faq-q * { opacity: 1 !important; }

.faq-chevron {
  width: 20px; height: 20px;
  flex-shrink: 0;
  stroke: var(--text-muted);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform var(--transition), stroke var(--transition);
}

.faq-item.open .faq-chevron {
  transform: rotate(180deg);
  stroke: var(--accent);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4,0,0.2,1);
  background: var(--bg-card);
}

.faq-a-inner {
  padding: 0 24px 20px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

/* =============================================
   FINAL CTA
============================================= */
#cta-final {
  text-align: center;
  padding: 100px 24px;
  position: relative;
  overflow: hidden;
}

.cta-glow {
  position: absolute;
  width: 600px; height: 400px;
  background: radial-gradient(ellipse, rgba(59,158,255,0.1) 0%, transparent 65%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

#cta-final h2 {
  font-family: var(--font-display);
  font-size: clamp(30px, 5vw, 54px);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  position: relative;
}

#cta-final p {
  color: var(--text-muted);
  font-size: 17px;
  margin-bottom: 44px;
  position: relative;
}

#cta-final .btn { position: relative; }

/* =============================================
   FOOTER
============================================= */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 24px;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--text); }

.footer-copy {
  color: var(--text-muted);
  font-size: 13px;
}

/* =============================================
   RESPONSIVE
============================================= */
@media (max-width: 1100px) {
  .pricing-grid-4 {
    grid-template-columns: repeat(2, 1fr);
    max-width: 680px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .nav-links { display: none; }

  .steps {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .steps::before { display: none; }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 360px;
    margin: 0 auto;
  }

  .pricing-grid-4 {
    grid-template-columns: 1fr;
    max-width: 380px;
    margin: 0 auto;
  }

  .price-card.featured { order: -1; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
  .features-grid { grid-template-columns: 1fr; }
}