/* Shared design primitives used across the app's stylesheets. */

:root {
  --navy: #071b49;
  --blue: #0a6fd7;
  --cyan: #14a8ff;
  --orange: #ff8a00;
  --ink: #101828;
  --muted: #667085;
  --line: #e6ecf6;
  --soft: #f5f8ff;
  --white: #ffffff;
  --shadow: 0 24px 70px rgba(7, 27, 73, 0.13);
  --radius: 26px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 86px; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 0% 0%, rgba(20, 168, 255, 0.17), transparent 34rem),
    radial-gradient(circle at 95% 8%, rgba(255, 138, 0, 0.14), transparent 24rem),
    linear-gradient(180deg, #ffffff 0%, #f7faff 45%, #ffffff 100%);
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.section-shell { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }

/* ---- Eyebrow / label tags ---- */
.eyebrow,
.label { display: inline-flex; align-items: center; gap: 10px; color: var(--blue); font-size: 0.78rem; font-weight: 900; text-transform: uppercase; letter-spacing: 0.12em; }
.eyebrow span { width: 11px; height: 11px; border-radius: 50%; background: linear-gradient(135deg, var(--orange), var(--cyan)); box-shadow: 0 0 0 7px rgba(20, 168, 255, 0.13); }

/* ---- Headings ---- */
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 22px; color: var(--navy); font-size: clamp(2.2rem, 4.5vw, 3.6rem); line-height: 1.12; letter-spacing: -0.042em; }
.section-heading { max-width: 790px; margin-bottom: 36px; }
.section-heading h2 { margin: 14px 0; color: var(--navy); font-size: clamp(2.1rem, 4.5vw, 3.45rem); line-height: 1.03; letter-spacing: -0.052em; }
.section-heading p { color: #5b6678; font-size: 1.05rem; line-height: 1.74; }

/* ---- Buttons ---- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 22px;
  border: 0;
  cursor: pointer;
  border-radius: 999px;
  font-size: 0.96rem;
  font-weight: 800;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.button:hover { transform: translateY(-2px); }
.button.primary { color: #fff; background: linear-gradient(135deg, var(--navy), var(--blue) 62%, var(--cyan)); box-shadow: 0 18px 36px rgba(10, 111, 215, 0.22); }
.button.secondary { color: var(--navy); background: #fff; border: 1px solid var(--line); box-shadow: 0 12px 26px rgba(7, 27, 73, 0.08); }

/* ---- Step / timeline cards ---- */
.timeline { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.timeline-item { padding: 28px; border-radius: var(--radius); border: 1px solid var(--line); background: #fff; box-shadow: 0 16px 38px rgba(7, 27, 73, 0.07); }
.timeline-item span { display: inline-flex; margin-bottom: 22px; padding: 8px 12px; color: var(--blue); background: rgba(10, 111, 215, 0.08); border-radius: 999px; font-size: 0.78rem; font-weight: 900; text-transform: uppercase; letter-spacing: 0.09em; }
.timeline-item:nth-child(even) span { color: #b85f00; background: rgba(255, 138, 0, 0.12); }
.timeline-item h3 { color: var(--navy); font-size: 1.2rem; }
.timeline-item p { margin-bottom: 0; color: var(--muted); line-height: 1.62; }

/* ---- Reveal-on-scroll animation (see js/common.js) ---- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.72s ease, transform 0.72s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---- Modal primitive — used by Login/Signup ---- */
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(7, 27, 73, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-backdrop.open { display: flex; }

.modal-card {
  position: relative;
  width: 100%;
  max-width: 480px;
  padding: 48px 40px 40px;
  border-radius: 32px;
  background: #fff;
  box-shadow: 0 40px 90px rgba(7, 27, 73, 0.22);
  text-align: center;
  animation: modal-in 0.32s cubic-bezier(0.22, 1, 0.36, 1);
}
@keyframes modal-in {
  from { opacity: 0; transform: scale(0.92) translateY(18px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--muted);
  font-size: 1.1rem;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.modal-close:hover { background: var(--soft); color: var(--navy); }
.modal-logo {
  width: 88px;
  height: 88px;
  object-fit: contain;
  margin: 0 auto 24px;
  padding: 12px;
  border-radius: 24px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 16px 40px rgba(7, 27, 73, 0.12);
}
.modal-card h2 { margin: 0 0 10px; color: var(--navy); font-size: 1.6rem; letter-spacing: -0.035em; }
.modal-card p { margin: 0 0 28px; color: #5b6678; line-height: 1.7; font-size: 0.97rem; }
.modal-btn {
  width: 100%;
  min-height: 52px;
  border: 0;
  border-radius: 999px;
  color: #fff;
  font: 800 0.96rem/1 inherit;
  background: linear-gradient(135deg, var(--navy), var(--blue) 62%, var(--cyan));
  box-shadow: 0 14px 30px rgba(10,111,215,0.22);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.modal-btn:hover { transform: translateY(-2px); box-shadow: 0 18px 36px rgba(10,111,215,0.28); }

/* ---- Responsive ---- */
@media (max-width: 1020px) {
  .timeline { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 700px) {
  .section-shell { width: min(100% - 28px, 1160px); }
  h1 { font-size: clamp(1.9rem, 10vw, 2.8rem); }
  .button { width: 100%; }
  .timeline { grid-template-columns: 1fr; }
  .modal-card { padding: 40px 24px 32px; }
}

/* ---- Accessibility ---- */

/* Skip navigation link — hidden until focused */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 9999;
  padding: 12px 22px;
  border-radius: 0 0 14px 14px;
  background: var(--navy);
  color: #fff;
  font-weight: 800;
  font-size: 0.9rem;
  text-decoration: none;
  transition: top 0.18s ease;
}
.skip-link:focus { top: 0; outline: 3px solid var(--cyan); outline-offset: 3px; }

/* Visible keyboard focus ring on all interactive elements */
:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
  border-radius: 6px;
}
/* Suppress outline for mouse/touch — only show for keyboard */
:focus:not(:focus-visible) { outline: none; }

.button:focus-visible { outline-color: var(--cyan); outline-offset: 4px; }
.modal-close:focus-visible,
.modal-btn:focus-visible { outline-offset: 4px; }

/* Screen-reader-only utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Respect prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .modal-card { animation: none !important; }
}