/* ==========================================================================
   Masterpiece Aesthetic — Artes do Sul Studio
   Tokens alimentados por design-system.json (theme-engine.js)
   ========================================================================== */
@import url('https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css');

:root {
    --bg-primary: #F3EDE0;
    --bg-gradient: linear-gradient(180deg, #F3EDE0 0%, #EAE1CE 100%);
    --bg-card: #FAF8F3;
    --bg-card-hover: #FFFFFF;
    --bg-surface: #FAF8F3;
    --text-primary: #1C1B18;
    --text-secondary: #4A4740;
    --text-muted: #8A8678;
    --accent: #B33A2E;
    --accent-2: #16324F;
    --accent-glow: rgba(179, 58, 46, 0.25);
    --accent-rgb: 179, 58, 46;
    --border: rgba(28, 27, 24, 0.12);
    --border-hover: rgba(179, 58, 46, 0.40);
    --on-accent: #FAF8F3;
    --font-heading: 'Yuji Syuku', 'Shippori Mincho', serif;
    --font-body: 'Noto Sans JP', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --gold: #B33A2E;
    --gold-bright: #B33A2E;
    --gold-dark: #16324F;
    --obsidian: #F3EDE0;
    --obsidian-surface: #FAF8F3;
    --emerald-accent: #10B981;
    --cyan-accent: #06B6D4;
    --glass: #FAF8F3;
    --glass-card: #FAF8F3;
    --glass-border: rgba(28, 27, 24, 0.12);
    --glass-border-hover: rgba(179, 58, 46, 0.40);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

html {
    scroll-behavior: smooth;
    background-color: var(--bg-primary);
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

h1, h2, h3, h4, h5, h6, .font-heading {
    font-family: var(--font-heading);
}

.font-mono {
    font-family: var(--font-mono);
}

::selection {
    background: var(--accent);
    color: var(--on-accent);
}

.bg-theme-canvas {
    background: var(--bg-gradient);
    background-color: var(--bg-primary);
}

.theme-orb-a {
    background: color-mix(in srgb, var(--accent) 16%, transparent);
}

.theme-orb-b {
    background: color-mix(in srgb, var(--accent-2) 14%, transparent);
}

.theme-orb-c {
    background: color-mix(in srgb, var(--accent) 10%, transparent);
}

html[data-mode="light"] .theme-orb-a,
html[data-mode="light"] .theme-orb-b,
html[data-mode="light"] .theme-orb-c {
    opacity: 0.55;
}

/* Compat: utilitários existentes passam a seguir o tema */
.text-gold { color: var(--accent); }
.text-gold-bright { color: var(--accent); }
.bg-gold { background-color: var(--accent); }
.border-gold { border-color: var(--accent); }
.from-gold { --tw-gradient-from: var(--accent); }
.to-gold-dark { --tw-gradient-to: var(--accent-2); }
.to-gold-bright { --tw-gradient-to: var(--accent); }
.bg-obsidian { background-color: var(--bg-primary); }
.bg-obsidian-surface { background-color: var(--bg-surface); }
.text-obsidian { color: var(--on-accent); }
.text-white { color: var(--text-primary); }
.text-slate-200,
.text-slate-300 { color: var(--text-secondary); }
.text-slate-400,
.text-slate-500 { color: var(--text-muted); }

.hover\:text-gold:hover { color: var(--accent); }
.hover\:text-white:hover { color: var(--text-primary); }
.hover\:bg-gold:hover { background-color: var(--accent); }
.hover\:text-obsidian:hover { color: var(--on-accent); }
.group:hover .group-hover\:text-gold { color: var(--accent); }

[class*="bg-gold/10"] { background-color: color-mix(in srgb, var(--accent) 10%, transparent); }
[class*="bg-gold/20"] { background-color: color-mix(in srgb, var(--accent) 20%, transparent); }
[class*="border-gold/20"] { border-color: color-mix(in srgb, var(--accent) 20%, transparent); }
[class*="border-gold/30"] { border-color: color-mix(in srgb, var(--accent) 30%, transparent); }
[class*="border-gold/50"] { border-color: color-mix(in srgb, var(--accent) 50%, transparent); }
[class*="shadow-gold/"] { --tw-shadow-color: var(--accent-glow); }

[class*="bg-white/5"] { background-color: color-mix(in srgb, var(--text-primary) 6%, transparent); }
[class*="bg-white/10"] { background-color: color-mix(in srgb, var(--text-primary) 10%, transparent); }
[class*="hover:bg-white/10"]:hover { background-color: color-mix(in srgb, var(--text-primary) 10%, transparent); }
[class*="border-white/5"] { border-color: var(--border); }
[class*="border-white/10"] { border-color: var(--border); }
[class*="border-white/15"] { border-color: var(--border); }
[class*="hover:border-gold"]:hover { border-color: var(--border-hover); }

[class*="bg-obsidian/70"],
[class*="bg-obsidian/80"],
[class*="bg-obsidian/85"],
[class*="bg-obsidian/90"] {
    background-color: color-mix(in srgb, var(--bg-primary) 82%, transparent);
}

html[data-mode="light"] [class*="bg-black/50"] {
    background-color: color-mix(in srgb, var(--accent) 8%, var(--bg-card));
}

html.theme-animating,
html.theme-animating body,
html.theme-animating header,
html.theme-animating .glass-card,
html.theme-animating .glass-dark,
html.theme-animating .filter-btn,
html.theme-animating .theme-switcher-btn,
html.theme-animating .bg-theme-canvas {
    transition: background-color 0.35s ease, color 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease, background-image 0.35s ease;
}

@media (prefers-reduced-motion: reduce) {
    html.theme-animating * {
        transition: none !important;
    }
}

#ads-counter {
    color-scheme: var(--text-secondary);
    color: var(--text-secondary);
}

/* Glassmorphism & Cards */
.glass {
    background: color-mix(in srgb, var(--bg-card) 80%, transparent);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
}

.glass-card {
    background: var(--glass-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    transition: var(--transition);
}

.glass-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--glass-border-hover);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -15px color-mix(in srgb, var(--bg-primary) 55%, transparent), 0 0 30px -10px var(--accent-glow);
}

.glass-dark {
    background: color-mix(in srgb, var(--bg-primary) 72%, transparent);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
}

.spotlight-card {
    position: relative;
    overflow: hidden;
}

.spotlight-card::before {
    content: '';
    position: absolute;
    top: var(--mouse-y, -999px);
    left: var(--mouse-x, -999px);
    transform: translate(-50%, -50%);
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.spotlight-card:hover::before {
    opacity: 1;
}

.shadow-3xl {
    box-shadow: 0 35px 60px -15px color-mix(in srgb, var(--bg-primary) 70%, #000);
}

.glow-gold {
    box-shadow: 0 0 30px var(--accent-glow);
}

.glow-emerald {
    box-shadow: 0 0 30px rgba(16, 185, 129, 0.25);
}

@keyframes pulse-slow {
    0%, 100% { opacity: 0.15; transform: scale(1); }
    50% { opacity: 0.35; transform: scale(1.08); }
}

.animate-pulse-slow {
    animation: pulse-slow 8s infinite ease-in-out;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

.animate-float {
    animation: float 4s ease-in-out infinite;
}

.filter-btn {
    padding: 0.5rem 1.25rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--text-primary) 4%, transparent);
    color: var(--text-secondary);
}

.filter-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.filter-btn.active {
    background: var(--accent);
    color: var(--on-accent);
    border-color: var(--accent);
    font-weight: 700;
    box-shadow: 0 0 20px var(--accent-glow);
}

.whatsapp-fab {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 999;
    width: 3.75rem;
    height: 3.75rem;
    border-radius: 9999px;
    background: #25D366;
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 25px rgba(37, 211, 102, 0.4);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.whatsapp-fab:hover {
    transform: scale(1.1) translateY(-2px);
    box-shadow: 0 15px 30px rgba(37, 211, 102, 0.6);
}

::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--text-primary) 18%, transparent);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

#projects-grid div img {
    max-height: 235px;
    object-position: center;
    object-fit: cover;
}

.brand-mark {
    display: inline-flex;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 9999px;
    overflow: hidden;
    flex-shrink: 0;
    box-shadow: 0 0 0 1px var(--border), 0 8px 18px -8px var(--accent-glow);
    transition: var(--transition);
    background: #050505;
}

.brand-mark-lg {
    width: 2.75rem;
    height: 2.75rem;
}

.brand-mark-sm {
    width: 2rem;
    height: 2rem;
}

.brand-mark img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.group:hover .brand-mark {
    transform: scale(1.05);
    box-shadow: 0 0 0 1px var(--border-hover), 0 10px 22px -6px var(--accent-glow);
}

#hero-visual {
    transition: opacity 0.35s ease, transform 0.7s;
}

#hero-visual.is-swapping {
    opacity: 0;
}

/* --------------------------------------------------------------------------
   Theme Switcher
   -------------------------------------------------------------------------- */
.theme-switcher {
    position: relative;
}

.theme-switcher-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
    padding: 0.55rem 0.85rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--bg-card) 80%, transparent);
    color: var(--text-primary);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    cursor: pointer;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: var(--transition);
}

.theme-switcher-btn:hover,
.theme-switcher-btn[aria-expanded="true"] {
    border-color: var(--border-hover);
    color: var(--accent);
}

.theme-switcher-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.theme-switcher-name {
    max-width: 9.5rem;
    overflow: hidden;
    text-overflow: ellipsis;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.65rem;
}

.theme-chevron {
    opacity: 0.65;
}

.theme-panel {
    position: absolute;
    top: calc(100% + 0.6rem);
    right: 0;
    z-index: 80;
    width: min(20.5rem, calc(100vw - 2rem));
    padding: 0.55rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    background: var(--bg-card);
    box-shadow: 0 24px 48px -20px color-mix(in srgb, #000 45%, transparent);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.theme-panel-label {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 0.45rem 0.55rem 0.65rem;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.theme-option {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.7rem 0.75rem;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-primary);
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
}

.theme-option:hover {
    background: color-mix(in srgb, var(--accent) 8%, transparent);
    border-color: var(--border);
}

.theme-option.is-active {
    background: color-mix(in srgb, var(--accent) 12%, transparent);
    border-color: var(--border-hover);
}

.theme-swatches {
    display: flex;
    gap: 3px;
    flex-shrink: 0;
}

.theme-swatch {
    width: 0.7rem;
    height: 0.7rem;
    border-radius: 9999px;
    border: 1px solid color-mix(in srgb, var(--text-primary) 18%, transparent);
}

.theme-option-copy {
    display: flex;
    flex-direction: column;
    min-width: 0;
    flex: 1;
}

.theme-option-name {
    font-size: 0.82rem;
    font-weight: 700;
    line-height: 1.2;
}

.theme-option-mode {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-top: 0.15rem;
}

.theme-option-check {
    color: var(--accent);
    font-weight: 800;
    font-size: 0.85rem;
}

[hidden] {
    display: none !important;
}

.bg-gold.hover\:bg-white:hover,
a.bg-gold:hover {
    background-color: color-mix(in srgb, var(--accent) 78%, white);
    color: var(--on-accent);
}

html[data-mode="light"] #mobile-drawer {
    background: color-mix(in srgb, var(--bg-primary) 94%, transparent);
}

@media (max-width: 767px) {
    .theme-switcher-name,
    .theme-chevron {
        display: none;
    }

    .theme-switcher-btn {
        padding: 0.5rem;
    }

    .theme-panel {
        position: fixed;
        top: auto;
        right: 1rem;
        left: 1rem;
        bottom: 6.25rem;
        width: auto;
    }
}

/* ==========================================================================
   FAQ Section & Interactive Accordion Styling
   ========================================================================== */
.faq-item {
    border: 1px solid var(--border);
    background-color: var(--bg-card);
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--border-hover);
    box-shadow: 0 8px 24px -4px rgba(0, 0, 0, 0.08);
}

.faq-item.active {
    border-color: var(--accent);
    background-color: var(--bg-card-hover);
}

.faq-question {
    width: 100%;
    text-align: left;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    cursor: pointer;
    background: none;
    border: none;
    outline: none;
}

.faq-chevron {
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    color: var(--accent);
    flex-shrink: 0;
}

.faq-item.active .faq-chevron {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease;
    opacity: 0;
    padding: 0 1.5rem;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    opacity: 1;
    padding-bottom: 1.25rem;
}