/**
 * StoneFest 2026 - Mobile-First Visitor Styling
 */

:root {
    --bg-dark: #0d0f12;
    --bg-card: #161a20;
    --bg-elevated: #1e242c;
    --gold: #f5a623;
    --gold-hover: #e09214;
    --gold-glow: rgba(245, 166, 35, 0.25);
    --text-primary: #f5f6f8;
    --text-secondary: #9aa0a6;
    --text-muted: #6e7681;
    --border-color: rgba(255, 255, 255, 0.1);
    --border-gold: rgba(245, 166, 35, 0.4);
    --accent-blue: #38bdf8;
    --danger: #ef4444;
    --success: #10b981;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    min-height: 100vh;
}

/* App Header */
.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(13, 15, 18, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
}

.brand-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #f5a623 0%, #b87a14 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: #12151a;
    font-size: 16px;
    box-shadow: 0 4px 12px var(--gold-glow);
}

.brand-title {
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.brand-sub {
    font-size: 11px;
    color: var(--gold);
    display: block;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn-icon {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-icon:hover {
    border-color: var(--gold);
    color: var(--gold);
}

/* Main Container */
.main-wrapper {
    max-width: 960px;
    margin: 0 auto;
    padding: 20px 16px 80px;
}

/* Hero Section (S01 Landing) */
.hero-card {
    background: linear-gradient(180deg, #1b2028 0%, #13171d 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-bottom: 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.hero-card::before {
    content: '';
    position: absolute;
    top: -50px;
    left: 50%;
    transform: translateX(-50%);
    width: 250px;
    height: 100px;
    background: radial-gradient(ellipse, var(--gold-glow) 0%, transparent 70%);
    pointer-events: none;
}

.hero-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(245, 166, 35, 0.12);
    border: 1px solid var(--border-gold);
    color: var(--gold);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 14px;
}

.hero-title {
    font-size: 26px;
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 10px;
}

.hero-desc {
    font-size: 14px;
    color: var(--text-secondary);
    max-width: 480px;
    margin: 0 auto 20px;
}

/* Surface Mode Selector (S02) */
.mode-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 24px;
}

.mode-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.25s ease;
    color: var(--text-primary);
    text-decoration: none;
}

.mode-btn .mode-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-elevated);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: all 0.25s ease;
}

.mode-btn .mode-title {
    font-size: 13px;
    font-weight: 600;
}

.mode-btn .mode-plane {
    font-size: 10px;
    color: var(--text-muted);
}

.mode-btn.active, .mode-btn:hover {
    border-color: var(--gold);
    background: rgba(245, 166, 35, 0.08);
}

.mode-btn.active .mode-icon, .mode-btn:hover .mode-icon {
    background: var(--gold);
    color: #12151a;
}

/* Filter Bar & Search */
.filter-bar {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.search-box {
    position: relative;
    width: 100%;
}

.search-input {
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px 16px 12px 42px;
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s ease;
}

.search-input:focus {
    border-color: var(--gold);
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.category-chips {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
}

.category-chips::-webkit-scrollbar {
    display: none;
}

.chip {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 6px 14px;
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
    cursor: pointer;
    transition: all 0.2s ease;
}

.chip.active, .chip:hover {
    border-color: var(--gold);
    color: var(--gold);
    background: rgba(245, 166, 35, 0.1);
}

/* Stone Catalogue Cards (S03) */
.stone-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

@media (min-width: 640px) {
    .stone-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 18px;
    }
}

@media (min-width: 900px) {
    .stone-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }
}

.stone-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    position: relative;
}

.stone-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-gold);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.stone-thumb-wrap {
    position: relative;
    width: 100%;
    padding-top: 100%; /* 1:1 Aspect ratio */
    overflow: hidden;
    background: #232830;
}

.stone-thumb {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.stone-card:hover .stone-thumb {
    transform: scale(1.05);
}

.stone-badge-finish {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(6px);
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.stone-badge-code {
    position: absolute;
    top: 8px;
    left: 8px;
    background: rgba(245, 166, 35, 0.85);
    color: #12151a;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 700;
}

.stone-body {
    padding: 12px;
    display: flex;
    flex-direction: column;
    flex: 1;
    justify-content: space-between;
}

.stone-name {
    font-size: 14px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.stone-origin {
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.stone-card-actions {
    display: flex;
    gap: 6px;
}

.btn-ar-launch {
    flex: 1;
    background: linear-gradient(135deg, #f5a623 0%, #d48815 100%);
    color: #12151a;
    font-weight: 700;
    font-size: 12px;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    text-decoration: none;
    transition: filter 0.2s ease;
}

.btn-ar-launch:hover {
    filter: brightness(1.1);
}

.btn-details {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-details:hover {
    color: var(--text-primary);
    border-color: var(--gold);
}

/* Modals & Drawers */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-sheet {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 24px;
    position: relative;
    transform: translateY(20px);
    transition: transform 0.25s ease;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.modal-overlay.active .modal-sheet {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 18px;
    font-weight: 700;
}

.btn-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 20px;
    cursor: pointer;
    padding: 4px;
}

.btn-close:hover {
    color: var(--text-primary);
}

/* Form Styling */
.form-group {
    margin-bottom: 14px;
}

.form-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-input, .form-textarea, .form-select {
    width: 100%;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s ease;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
    border-color: var(--gold);
}

.form-textarea {
    resize: vertical;
    min-height: 70px;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 18px;
    font-size: 12px;
    color: var(--text-secondary);
}

.checkbox-group input {
    margin-top: 3px;
    accent-color: var(--gold);
}

.btn-primary-block {
    width: 100%;
    background: linear-gradient(135deg, #f5a623 0%, #d48815 100%);
    color: #12151a;
    font-size: 15px;
    font-weight: 700;
    padding: 12px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: filter 0.2s ease;
}

.btn-primary-block:hover {
    filter: brightness(1.1);
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: rgba(22, 26, 32, 0.95);
    border: 1px solid var(--border-gold);
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    z-index: 2000;
    font-size: 14px;
    font-weight: 600;
    transition: transform 0.3s cubic-bezier(0.18, 0.89, 0.32, 1.28);
    display: flex;
    align-items: center;
    gap: 10px;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}


/* ========================================================
   ANIMATED SPLASH SCREEN & BRAND LOGO
   ======================================================== */

.splash-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 999999;
    background: radial-gradient(circle at 50% 40%, #171d26 0%, #0a0c10 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
    cursor: pointer;
    overflow: hidden;
    transition: opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1), transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

.splash-screen.fade-out {
    opacity: 0;
    transform: scale(1.06);
    pointer-events: none;
}

.splash-ambient-glow {
    position: absolute;
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, rgba(242, 101, 34, 0.22) 0%, rgba(0, 51, 102, 0.18) 60%, transparent 80%);
    filter: blur(50px);
    border-radius: 50%;
    animation: splashGlowPulse 3s infinite alternate ease-in-out;
    pointer-events: none;
}

@keyframes splashGlowPulse {
    0% { transform: scale(0.9) rotate(0deg); opacity: 0.6; }
    100% { transform: scale(1.15) rotate(15deg); opacity: 1; }
}

.splash-content {
    position: relative;
    z-index: 2;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.splash-logo-card {
    background: #ffffff;
    padding: 22px 28px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6), 0 0 40px rgba(242, 101, 34, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 260px;
    width: 75vw;
    margin-bottom: 24px;
    animation: splashLogoEntrance 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    position: relative;
    overflow: hidden;
}

.splash-logo-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(60deg, transparent 30%, rgba(255, 255, 255, 0.7) 50%, transparent 70%);
    transform: rotate(30deg);
    animation: splashShine 2.2s infinite ease-in-out;
}

@keyframes splashShine {
    0% { transform: translateX(-150%) rotate(30deg); }
    100% { transform: translateX(150%) rotate(30deg); }
}

@keyframes splashLogoEntrance {
    0% {
        opacity: 0;
        transform: scale(0.72) translateY(30px);
        filter: blur(10px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
        filter: blur(0px);
    }
}

.splash-logo-img {
    max-width: 100%;
    max-height: 120px;
    object-fit: contain;
    display: block;
}

.splash-title {
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 6px;
    opacity: 0;
    animation: splashTextFade 0.8s 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.splash-subtitle {
    font-size: 12px;
    color: var(--text-secondary);
    letter-spacing: 1px;
    margin-bottom: 26px;
    opacity: 0;
    animation: splashTextFade 0.8s 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes splashTextFade {
    0% { opacity: 0; transform: translateY(12px); }
    100% { opacity: 1; transform: translateY(0); }
}

.splash-loader-bar {
    width: 180px;
    height: 3px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
    opacity: 0;
    animation: splashTextFade 0.8s 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.splash-loader-progress {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #f26522, #f5a623);
    border-radius: 4px;
    animation: splashProgressFill 2.2s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

@keyframes splashProgressFill {
    0% { width: 0%; }
    50% { width: 70%; }
    100% { width: 100%; }
}

.splash-skip-hint {
    position: absolute;
    bottom: 28px;
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    opacity: 0.7;
    animation: pulseHint 2s infinite ease-in-out;
}

.brand-logo-img {
    height: 34px;
    max-width: 130px;
    object-fit: contain;
    display: block;
    background: #ffffff;
    border-radius: 6px;
    padding: 2px 6px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}