/* ============================================================
   LANDING PAGE (index.html) — page-specific styles
   ============================================================ */

.section { padding: 96px 0; }

/* ── Scroll reveal ── */
.reveal { opacity: 0; transform: translateY(32px) scale(.97); transition: opacity .65s ease, transform .65s ease; }
.reveal.d1 { transition-delay: .10s; }
.reveal.d2 { transition-delay: .20s; }
.reveal.d3 { transition-delay: .30s; }
.reveal.d4 { transition-delay: .40s; }
.reveal.d5 { transition-delay: .50s; }
.reveal.shown { opacity: 1; transform: none; }

/* ── Button shimmer ── */
@keyframes shimmerSlide { from { transform: translateX(-120%) skewX(-15deg); } to { transform: translateX(220%) skewX(-15deg); } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }
@keyframes modalIn { from { opacity: 0; transform: scale(.95) translateY(-16px); } to { opacity: 1; transform: none; } }
@keyframes expandDown { from { opacity: 0; max-height: 0; } to { opacity: 1; max-height: 600px; } }
@keyframes spinSlow { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.fade-up { animation: fadeUp .55s ease both; }
.fu1 { animation-delay: .10s; }
.fu2 { animation-delay: .22s; }
.fu3 { animation-delay: .34s; }

/* ── Modal overlay ── */
.overlay { position: fixed; inset: 0; background: rgba(21, 66, 81, .72); z-index: 400; display: flex; align-items: center; justify-content: center; backdrop-filter: blur(4px); }
.modal-box { background: #fff; border-radius: 8px; padding: 48px; max-width: 460px; width: 90%; animation: modalIn .3s ease; position: relative; }

/* ── Tabs ── */
.tab-btn { font-family: var(--font-body); font-weight: 600; font-size: 13px; letter-spacing: .06em; text-transform: uppercase; padding: 10px 28px; border: 2px solid #154251; border-radius: 4px; cursor: pointer; transition: all 150ms ease; background: transparent; color: #154251; }
.tab-btn.active { background: #154251; color: #fff; }

/* ── Procedure card expand ── */
.proc-article { overflow: hidden; animation: expandDown .35s ease forwards; }

/* ── WhatsApp FAB ── */
.wa-fab { position: fixed; bottom: 28px; right: 28px; z-index: 200; width: 56px; height: 56px; border-radius: 9999px; background: #25d366; box-shadow: 0 4px 20px rgba(37, 211, 102, .4); display: flex; align-items: center; justify-content: center; transition: transform 150ms ease, box-shadow 150ms ease; cursor: pointer; }
.wa-fab:hover { transform: scale(1.09); box-shadow: 0 6px 28px rgba(37, 211, 102, .55); }

/* ── Field ── */
.field { width: 100%; font-family: var(--font-body); font-weight: 400; font-size: 15px; color: #2d4a50; background: #fff; border: 1px solid #d0dbd8; border-radius: 4px; padding: 12px 16px; outline: none; box-sizing: border-box; transition: border-color 150ms; }
.field:focus { border-color: #154251; }
.field-lbl { display: block; font-family: var(--font-body); font-weight: 500; font-size: 11px; letter-spacing: .10em; text-transform: uppercase; color: #154251; margin-bottom: 6px; }