/* ===== BASE ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; }

/* ===== CUSTOM PROPERTIES ===== */
:root {
    --terra-500: #C4704B;
    --terra-600: #A85A3A;
    --sand-900: #522D21;
    --sand-800: #6E3A2A;
    --sand-700: #8A4730;
    --sand-600: #9E7742;
    --sand-500: #D4B478;
    --sand-400: #E2CA9A;
    --sand-300: #EDDFBE;
    --sand-200: #F5EDDA;
    --sand-100: #FAF6EE;
    --sand-50: #FDFBF7;
    --cream: #FDF9F3;
    --moss: #7A8B6F;
}

/* ===== BUTTONS ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    background: var(--terra-500);
    color: #fff;
    padding: 14px 32px;
    border-radius: 60px;
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid var(--terra-500);
    letter-spacing: 0.01em;
}
.btn-primary:hover {
    background: var(--terra-600);
    border-color: var(--terra-600);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(196, 112, 75, 0.3);
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    background: transparent;
    color: var(--sand-700);
    padding: 14px 32px;
    border-radius: 60px;
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid var(--sand-300);
    letter-spacing: 0.01em;
}
.btn-ghost:hover {
    border-color: var(--terra-400);
    color: var(--terra-600);
    transform: translateY(-2px);
}

/* ===== INPUTS ===== */
.input-field {
    width: 100%;
    padding: 14px 18px;
    border: 1.5px solid var(--sand-200);
    border-radius: 12px;
    background: #fff;
    font-family: 'DM Sans', system-ui, sans-serif;
    font-size: 0.95rem;
    color: var(--sand-800);
    transition: all 0.25s ease;
    outline: none;
}
.input-field::placeholder { color: var(--sand-400); }
.input-field:focus {
    border-color: var(--terra-400);
    box-shadow: 0 0 0 3px rgba(196, 112, 75, 0.1);
}

/* ===== NAV ===== */
.nav-link { position: relative; }
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--terra-500);
    transition: width 0.3s ease;
    border-radius: 2px;
}
.nav-link:hover::after { width: 100%; }
.nav-link:hover { color: var(--terra-600) !important; }

/* ===== HEADER SCROLL ===== */
#site-header {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease;
}
#site-header.scrolled {
    background: rgba(253, 249, 243, 0.92);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(140, 130, 121, 0.1);
}

/* ===== HERO ANIMATIONS ===== */
.hero-tagline { animation: slideUp 0.8s ease forwards; animation-delay: 0.1s; opacity: 0; }
.hero-headline { animation: slideUp 0.8s ease forwards; animation-delay: 0.25s; opacity: 0; }
.hero-subtitle { animation: slideUp 0.8s ease forwards; animation-delay: 0.4s; opacity: 0; }
.hero-img-card { animation: fadeUp 0.9s ease forwards; animation-delay: 0.5s; opacity: 0; transform: translateY(30px); }

@keyframes slideUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== SCROLL LINE ===== */
.animate-scroll-line {
    animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.5); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ===== REVEAL ANIMATIONS ===== */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
.reveal-img {
    opacity: 0;
    transform: scale(0.97);
    transition: opacity 0.9s ease, transform 0.9s ease;
}
.reveal-img.visible {
    opacity: 1;
    transform: scale(1);
}

/* Stagger children */
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.15s; }
.reveal:nth-child(4) { transition-delay: 0.2s; }
.reveal:nth-child(5) { transition-delay: 0.25s; }
.reveal:nth-child(6) { transition-delay: 0.3s; }
.reveal:nth-child(7) { transition-delay: 0.35s; }

/* ===== MOBILE NAV ===== */
#mobile-nav.open {
    opacity: 1 !important;
    pointer-events: all !important;
}

/* ===== CARD WHITE ===== */
.card-white {
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    backdrop-filter: blur(8px);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .btn-primary, .btn-ghost { padding: 12px 24px; font-size: 0.9rem; }
}