/* ============================================================
   FlashSim — Pre-launch page
   ============================================================ */
:root {
  --cs-blue:        #1B5BDB;
  --cs-blue-dark:   #004C93;
  --cs-blue-deep:   #0A2A5E;
  --cs-orange:      #F7941D;
  --cs-orange-dark: #E07B00;
  --cs-bg:          #FFFFFF;
  --cs-surface:     #F5F8FC;
  --cs-text:        #0F172A;
  --cs-muted:       #5B6B82;
  --cs-border:      #DCE4EF;
  --cs-error:       #DC2626;
  --cs-success:     #10B981;
  --cs-radius:      16px;
  --cs-shadow:      0 20px 50px rgba(10, 42, 94, 0.14);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--cs-bg);
  color: var(--cs-text);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--cs-blue); }

.cs-wrap { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 20px; }

/* ---------- Top bar ---------- */
.cs-top {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--cs-border);
}
.cs-top__inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.cs-logo { height: 40px; width: auto; }
.cs-top__cta {
  font-weight: 600; font-size: .9rem; text-decoration: none;
  color: #fff; background: var(--cs-blue);
  padding: 9px 20px; border-radius: 999px;
  transition: background .2s;
}
.cs-top__cta:hover { background: var(--cs-blue-dark); }

/* ---------- Hero ---------- */
.cs-hero {
  position: relative;
  padding: 72px 0 88px;
  background:
    radial-gradient(900px 500px at 90% -10%, rgba(247, 148, 29, 0.16), transparent 60%),
    radial-gradient(900px 600px at -10% 110%, rgba(27, 91, 219, 0.14), transparent 60%),
    linear-gradient(180deg, #F5F8FC 0%, #FFFFFF 100%);
}
.cs-hero__grid {
  display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px; align-items: center;
}
.cs-badge {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: .8rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--cs-orange-dark);
  background: rgba(247, 148, 29, 0.12);
  border: 1px solid rgba(247, 148, 29, 0.35);
  padding: 7px 14px; border-radius: 999px;
}
.cs-badge__dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--cs-orange);
  box-shadow: 0 0 0 0 rgba(247, 148, 29, .6);
  animation: cs-pulse 1.8s infinite;
}
@keyframes cs-pulse {
  70%  { box-shadow: 0 0 0 10px rgba(247, 148, 29, 0); }
  100% { box-shadow: 0 0 0 0 rgba(247, 148, 29, 0); }
}
.cs-hero__title {
  margin: 22px 0 18px;
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 800; line-height: 1.05; letter-spacing: -0.03em;
  color: var(--cs-blue-deep);
}
.cs-hero__title span {
  background: linear-gradient(90deg, var(--cs-blue) 0%, var(--cs-orange) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.cs-hero__lead { font-size: 1.125rem; color: var(--cs-muted); max-width: 540px; }

/* ---------- Countdown ---------- */
.cs-countdown { display: flex; gap: 12px; margin-top: 36px; }
.cs-countdown__cell {
  flex: 1; max-width: 104px;
  background: #fff; border: 1px solid var(--cs-border); border-radius: 14px;
  padding: 14px 8px; text-align: center;
  box-shadow: 0 4px 14px rgba(10, 42, 94, 0.06);
}
.cs-countdown__cell strong {
  display: block; font-size: 2rem; font-weight: 800; line-height: 1.1;
  color: var(--cs-blue-deep); font-variant-numeric: tabular-nums;
}
.cs-countdown__cell span {
  font-size: .72rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--cs-muted);
}
.cs-countdown.is-live .cs-countdown__cell strong { color: var(--cs-orange-dark); }

/* ---------- Form card ---------- */
.cs-card {
  scroll-margin-top: 90px;
  background: #fff; border: 1px solid var(--cs-border); border-radius: 22px;
  padding: 36px 32px; box-shadow: var(--cs-shadow);
  position: relative;
}
.cs-card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 5px;
  border-radius: 22px 22px 0 0;
  background: linear-gradient(90deg, var(--cs-blue), var(--cs-orange));
}
.cs-card__title { font-size: 1.5rem; font-weight: 800; color: var(--cs-blue-deep); letter-spacing: -0.01em; }
.cs-card__sub { color: var(--cs-muted); font-size: .95rem; margin: 8px 0 24px; }

.cs-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.cs-field { margin-bottom: 16px; }
.cs-field label { display: block; font-size: .875rem; font-weight: 600; margin-bottom: 6px; }
.cs-field label em { font-style: normal; font-weight: 400; color: var(--cs-muted); }
.cs-field input {
  width: 100%; font: inherit; font-size: 1rem;
  padding: 12px 14px; border: 1.5px solid var(--cs-border); border-radius: 10px;
  background: var(--cs-surface); color: var(--cs-text);
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.cs-field input:focus {
  outline: none; background: #fff; border-color: var(--cs-blue);
  box-shadow: 0 0 0 4px rgba(27, 91, 219, 0.15);
}
.cs-field.has-error input { border-color: var(--cs-error); }
.cs-field__err { display: block; min-height: 0; color: var(--cs-error); font-size: .8rem; margin-top: 4px; }
.cs-field__err:empty { display: none; }

.cs-check { display: flex; gap: 10px; align-items: flex-start; font-size: .85rem; color: var(--cs-muted); cursor: pointer; margin: 6px 0 4px; }
.cs-check input { width: 18px; height: 18px; margin-top: 2px; flex-shrink: 0; accent-color: var(--cs-blue); }

.cs-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; margin-top: 20px;
  font: inherit; font-size: 1rem; font-weight: 700; text-decoration: none;
  color: #fff; border: 0; border-radius: 999px; padding: 15px 28px; cursor: pointer;
  background: linear-gradient(90deg, var(--cs-orange) 0%, var(--cs-orange-dark) 100%);
  box-shadow: 0 8px 22px rgba(247, 148, 29, 0.35);
  transition: transform .15s, box-shadow .2s, opacity .2s;
}
.cs-btn:hover { transform: translateY(-1px); box-shadow: 0 12px 28px rgba(247, 148, 29, 0.45); }
.cs-btn:disabled { opacity: .7; cursor: wait; transform: none; }
.cs-btn__spinner {
  display: none; width: 18px; height: 18px; border-radius: 50%;
  border: 2.5px solid rgba(255,255,255,.4); border-top-color: #fff;
  animation: cs-spin .7s linear infinite;
}
.cs-btn.is-loading .cs-btn__spinner { display: inline-block; }
@keyframes cs-spin { to { transform: rotate(360deg); } }

.cs-form__msg { margin-top: 12px; font-size: .9rem; color: var(--cs-error); text-align: center; }
.cs-form__msg:empty { display: none; }

.cs-success { text-align: center; padding: 24px 0 8px; }
.cs-success__icon {
  width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 50%;
  display: grid; place-items: center; color: #fff;
  background: var(--cs-success); box-shadow: 0 10px 24px rgba(16, 185, 129, .35);
}
.cs-success__icon svg { width: 32px; height: 32px; }

/* ---------- Intro ---------- */
.cs-intro { padding: 88px 0 24px; }
.cs-intro__inner { max-width: 820px; text-align: center; }
.cs-intro p { font-size: 1.125rem; color: var(--cs-muted); margin-top: 16px; }
.cs-h2 {
  font-size: clamp(1.7rem, 3.4vw, 2.4rem); font-weight: 800;
  letter-spacing: -0.02em; line-height: 1.15; color: var(--cs-blue-deep);
}
.cs-h2--center { text-align: center; }

/* ---------- Features ---------- */
.cs-features { padding: 56px 0 96px; }
.cs-features__grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 44px;
}
.cs-feature {
  background: var(--cs-surface); border: 1px solid var(--cs-border); border-radius: var(--cs-radius);
  padding: 28px 26px;
  transition: transform .2s, box-shadow .2s, border-color .2s, background .2s;
}
.cs-feature:hover {
  transform: translateY(-4px); background: #fff;
  border-color: rgba(27, 91, 219, .35); box-shadow: 0 14px 34px rgba(10, 42, 94, 0.10);
}
.cs-feature__icon {
  width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center;
  color: #fff; background: linear-gradient(135deg, var(--cs-blue), var(--cs-blue-dark));
  margin-bottom: 18px;
}
.cs-feature:nth-child(even) .cs-feature__icon { background: linear-gradient(135deg, var(--cs-orange), var(--cs-orange-dark)); }
.cs-feature__icon svg { width: 24px; height: 24px; }
.cs-feature h3 { font-size: 1.08rem; font-weight: 700; color: var(--cs-blue-deep); line-height: 1.35; margin-bottom: 10px; }
.cs-feature p { font-size: .94rem; color: var(--cs-muted); }

/* ---------- Final CTA ---------- */
.cs-final {
  padding: 88px 0;
  background:
    radial-gradient(700px 400px at 85% 0%, rgba(247, 148, 29, 0.28), transparent 60%),
    linear-gradient(135deg, var(--cs-blue-deep) 0%, var(--cs-blue-dark) 55%, var(--cs-blue) 100%);
  color: #fff; text-align: center;
}
.cs-final__inner { max-width: 780px; }
.cs-final__kicker {
  display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  color: var(--cs-orange); margin-bottom: 14px;
}
.cs-final h2 { font-size: clamp(1.8rem, 3.8vw, 2.6rem); font-weight: 800; line-height: 1.15; letter-spacing: -0.02em; }
.cs-final p { color: rgba(255,255,255,.82); font-size: 1.08rem; margin: 18px auto 0; }
.cs-btn--light { width: auto; margin-top: 32px; }

/* ---------- Footer ---------- */
.cs-footer { background: #071C40; color: rgba(255,255,255,.6); font-size: .85rem; padding: 24px 0; }
.cs-footer__inner { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between; }
.cs-footer nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.cs-footer a { color: rgba(255,255,255,.8); text-decoration: none; }
.cs-footer a:hover { color: #fff; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .cs-hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .cs-features__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .cs-wrap { padding: 0 16px; }
  .cs-logo { height: 32px; }
  .cs-hero { padding: 44px 0 56px; }
  .cs-countdown { gap: 8px; }
  .cs-countdown__cell { padding: 12px 4px; }
  .cs-countdown__cell strong { font-size: 1.55rem; }
  .cs-card { padding: 30px 20px; }
  .cs-features__grid { grid-template-columns: 1fr; }
  .cs-intro { padding-top: 60px; }
  .cs-final { padding: 64px 0; }
  .cs-footer__inner { flex-direction: column; align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}