/* ============================================
   ZP Granite Outlet — Custom Styles
   Classic & Elegant: Burgundy + Blush Palette
   ============================================ */

/* --- Custom Properties --- */
:root {
    --color-burgundy-800: #7B2D3B;
    --color-burgundy-900: #5c1e2a;
    --color-blush-50: #fdf8f6;
    --color-blush-200: #f5e0d8;
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-sans: 'Lato', system-ui, sans-serif;
    --transition-fast: 200ms ease;
    --transition-medium: 350ms ease;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* --- Header Scroll State --- */
#site-header {
    background: transparent;
    transition: background var(--transition-medium), box-shadow var(--transition-fast);
}

#site-header.scrolled {
    background: rgba(253, 248, 246, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(123, 45, 59, 0.08);
}

#site-header.scrolled #nav-logo-text {
    color: var(--color-burgundy-900);
}

#site-header.scrolled .nav-link {
    color: var(--color-burgundy-900);
}

#site-header.scrolled .nav-link:hover {
    color: var(--color-burgundy-600);
}

/* --- Section Labels & Titles --- */
.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-burgundy-800);
    background: linear-gradient(135deg, rgba(123, 45, 59, 0.08), rgba(123, 45, 59, 0.03));
    border: 1px solid rgba(123, 45, 59, 0.15);
    padding: 0.4em 1em;
    border-radius: 100px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--color-burgundy-900);
    line-height: 1.2;
}

.section-desc {
    font-size: 1.05rem;
    color: rgba(92, 30, 42, 0.6);
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

/* --- Buttons --- */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--color-burgundy-800);
    color: #ffffff;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    border: 2px solid var(--color-burgundy-800);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
    text-decoration: none;
}

.btn-primary:hover {
    background: var(--color-burgundy-700);
    border-color: var(--color-burgundy-700);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(123, 45, 59, 0.25);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: transparent;
    color: var(--color-burgundy-800);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    border: 2px solid var(--color-burgundy-800);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
    text-decoration: none;
}

.btn-secondary:hover {
    background: var(--color-burgundy-800);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(123, 45, 59, 0.25);
}

/* --- Hero CTA Buttons --- */
.btn-cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: #ffffff;
    color: var(--color-burgundy-900);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 0.5rem;
    text-decoration: none;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.btn-cta-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
    background: #faf0ec;
}

.btn-cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: transparent;
    color: #ffffff;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 0.5rem;
    text-decoration: none;
    transition: background var(--transition-fast), border-color var(--transition-fast);
}

.btn-cta-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.6);
}

/* --- Input Fields --- */
.input-field {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1.5px solid rgba(123, 45, 59, 0.15);
    border-radius: 0.5rem;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    color: var(--color-burgundy-900);
    background: #ffffff;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}

.input-field::placeholder {
    color: rgba(92, 30, 42, 0.3);
}

.input-field:hover {
    border-color: rgba(123, 45, 59, 0.3);
}

.input-field:focus {
    border-color: var(--color-burgundy-800);
    box-shadow: 0 0 0 3px rgba(123, 45, 59, 0.1);
}

.input-field.invalid {
    border-color: #dc4c68;
    box-shadow: 0 0 0 3px rgba(220, 76, 104, 0.1);
}

/* --- Service Cards --- */
.service-card .card-inner {
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.service-card:hover .card-inner {
    transform: translateY(-4px);
}

/* --- Gallery Items --- */
.gallery-item img {
    transition: transform var(--transition-medium);
}

/* --- Back to Top --- */
.back-to-top {
    opacity: 0;
    pointer-events: none;
    transform: translateY(1rem);
    transition: opacity var(--transition-fast), transform var(--transition-fast), background var(--transition-fast);
}

.back-to-top.visible {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-burgundy-700);
    transform: translateY(-2px);
}

/* --- Hero Animations --- */
.hero-anim {
    opacity: 0;
    transform: translateY(24px);
    animation: heroReveal 0.7s ease forwards;
}

.hero-anim:nth-child(1) { animation-delay: 0.1s; }
.hero-anim:nth-child(2) { animation-delay: 0.25s; }
.hero-anim:nth-child(3) { animation-delay: 0.4s; }
.hero-anim:nth-child(4) { animation-delay: 0.55s; }

@keyframes heroReveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Scroll Reveal (Progressive Enhancement) --- */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.6s ease, transform 0.6s ease;
    }

    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }

    .reveal:nth-child(2) { transition-delay: 0.1s; }
    .reveal:nth-child(3) { transition-delay: 0.2s; }
    .reveal:nth-child(4) { transition-delay: 0.3s; }
}

/* When JS is disabled, all reveal elements are visible */
.no-js .reveal {
    opacity: 1;
    transform: translateY(0);
}

/* --- Mobile Menu --- */
.mobile-nav-link {
    display: block;
}

/* --- Focus Styles --- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--color-burgundy-800);
    outline-offset: 2px;
    border-radius: 0.25rem;
}

/* --- Selection --- */
::selection {
    background: rgba(123, 45, 59, 0.2);
    color: var(--color-burgundy-900);
}

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

/* --- Responsive Tweaks --- */
@media (max-width: 639px) {
    .section-desc {
        font-size: 0.95rem;
    }

    .btn-primary, .btn-secondary {
        padding: 0.65rem 1.25rem;
        font-size: 0.85rem;
    }
}