/* ─── Custom Properties ─── */
:root {
    --terra-500: #B85446;
    --terra-600: #A34438;
    --sand-100: #FAF5EE;
    --sand-200: #F5ECDA;
    --trust-800: #263F5C;
    --trust-900: #21344C;
    --trust-50: #F4F7FB;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ─── Base / Reset ─── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; min-height: 100vh; overflow-x: hidden; }
img, svg { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; }

/* ─── Typography ─── */
h1, h2, h3 { font-family: 'Playfair Display', Georgia, serif; }
p, li, a, span, label, input, select, textarea { font-family: 'Inter', system-ui, sans-serif; }

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--sand-100); }
::-webkit-scrollbar-thumb { background: #c4d6e8; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #97b6d4; }

/* ─── Selection ─── */
::selection { background: rgba(184, 84, 70, 0.2); color: var(--trust-900); }

/* ─── Animations ─── */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.95); }
    to   { opacity: 1; transform: scale(1); }
}

/* ─── 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;
}

/* ─── Buttons ─── */
.btn-primary {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: var(--terra-500); color: #fff;
    padding: 0.875rem 1.75rem; border-radius: 0.75rem;
    font-weight: 600; font-size: 0.9375rem; text-decoration: none;
    border: none; cursor: pointer;
    transition: background 0.2s, transform 0.15s var(--ease-out), box-shadow 0.2s;
}
.btn-primary:hover {
    background: var(--terra-600); transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(184, 84, 70, 0.35);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: transparent; color: var(--trust-800);
    padding: 0.875rem 1.75rem; border-radius: 0.75rem;
    font-weight: 600; font-size: 0.9375rem; text-decoration: none;
    border: 1.5px solid rgba(38, 63, 92, 0.25); cursor: pointer;
    transition: border-color 0.2s, color 0.2s, transform 0.15s var(--ease-out);
}
.btn-secondary:hover {
    border-color: var(--terra-500); color: var(--terra-600);
    transform: translateY(-2px);
}

.btn-terra-outline {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: transparent; color: #fff;
    padding: 0.875rem 1.75rem; border-radius: 0.75rem;
    font-weight: 600; font-size: 0.9375rem; text-decoration: none;
    border: 1.5px solid rgba(255,255,255,0.35); cursor: pointer;
    transition: background 0.2s, border-color 0.2s, transform 0.15s var(--ease-out);
}
.btn-terra-outline:hover {
    background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.7);
    transform: translateY(-2px);
}

/* ─── Cards ─── */
.card-elevated {
    background: #fff;
    border: 1px solid rgba(196, 214, 232, 0.5);
    transition: box-shadow 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}
.card-elevated:hover {
    box-shadow: 0 12px 40px rgba(33, 52, 76, 0.1);
    transform: translateY(-4px);
}

/* ─── Form ─── */
.input-field {
    background: var(--trust-50);
    border: 1.5px solid rgba(196, 214, 232, 0.8);
    border-radius: 0.625rem;
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    color: var(--trust-800);
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
    outline: none;
}
.input-field::placeholder { color: #94a3b8; }
.input-field:hover { border-color: #97b6d4; background: #fff; }
.input-field:focus {
    border-color: var(--terra-500);
    box-shadow: 0 0 0 3px rgba(184, 84, 70, 0.12);
    background: #fff;
}
.input-field:invalid:not(:placeholder-shown) {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* ─── Navigation ─── */
.nav-link { position: relative; }
.nav-link::after {
    content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
    background: var(--terra-500); border-radius: 1px;
    transition: width 0.25s var(--ease-out);
}
.nav-link:hover::after { width: 100%; }

/* ─── Mobile Menu ─── */
#mobileMenu { will-change: opacity, transform; }
#mobileMenu.open {
    opacity: 1; pointer-events: auto; transform: translateY(0);
}

/* ─── Scroll Reveal ─── */
.reveal {
    opacity: 0; transform: translateY(30px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.revealed {
    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; }

/* ─── Header scroll state ─── */
#siteHeader.scrolled {
    background: rgba(253, 252, 250, 0.95);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(196, 214, 232, 0.5);
}

/* ─── Responsive ─── */
@media (max-width: 640px) {
    h1 { font-size: 2.75rem; }
    h2 { font-size: 2.25rem; }
    .btn-primary, .btn-secondary, .btn-terra-outline {
        padding: 0.75rem 1.25rem; font-size: 0.875rem;
    }
}

@media (min-width: 641px) and (max-width: 1023px) {
    h1 { font-size: 3.5rem; }
    h2 { font-size: 2.75rem; }
}

@media (min-width: 1024px) {
    h1 { font-size: clamp(3rem, 5vw, 4.5rem); }
    h2 { font-size: clamp(2.25rem, 3.5vw, 3.25rem); }
}

/* ─── Print ─── */
@media print {
    #siteHeader, #mobileMenu, button, .btn-primary, .btn-secondary { display: none; }
    body { color: #000; background: #fff; }
    a { color: #000; text-decoration: underline; }
}