/* ===== RESET & BASE ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

[hidden] {
    display: none !important;
}

:root {
    --bg: #f8fafc;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    
    /* Vibrant Industry Color Palette */
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
    --primary-gradient-hover: linear-gradient(135deg, #4f46e5 0%, #0891b2 100%);
    --accent-indigo: #6366f1;
    --accent-cyan: #06b6d4;
    --accent-violet: #8b5cf6;
    --accent-amber: #f59e0b;
    --accent-emerald: #10b981;
    
    --accent: #06b6d4;
    --accent-dark: #0284c7;
    --accent-dim: rgba(99, 102, 241, 0.08);
    --accent-glow: rgba(99, 102, 241, 0.25);
    
    --text: #0f172a;
    --text-dim: #64748b;
    --border: #e2e8f0;
    --border-hover: #cbd5e1;
    --border-light: #f1f5f9;
    --success: #10b981;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    --radius-xl: 20px;
    --radius-lg: 14px;
    --radius-md: 10px;
    --radius-sm: 6px;
    
    --shadow-subtle: 0 1px 3px rgba(15, 23, 42, 0.04), 0 1px 2px rgba(15, 23, 42, 0.02);
    --shadow-card: 0 12px 32px -4px rgba(15, 23, 42, 0.06), 0 2px 8px rgba(15, 23, 42, 0.02);
    --shadow-hover: 0 20px 40px -8px rgba(99, 102, 241, 0.25), 0 4px 12px rgba(15, 23, 42, 0.04);
    
    --transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

html, body {
    height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Vibrant Ambient Mesh & Grid Background */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        radial-gradient(circle at 12% 15%, rgba(99, 102, 241, 0.09) 0%, transparent 45%),
        radial-gradient(circle at 88% 20%, rgba(6, 182, 212, 0.09) 0%, transparent 45%),
        radial-gradient(circle at 50% 85%, rgba(139, 92, 246, 0.07) 0%, transparent 50%),
        linear-gradient(rgba(148, 163, 184, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, 0.04) 1px, transparent 1px);
    background-size: 100% 100%, 100% 100%, 100% 100%, 40px 40px, 40px 40px;
    pointer-events: none;
    z-index: 0;
}

/* ===== APP HEADER ===== */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    z-index: 50;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    font-weight: 900;
    letter-spacing: 2.5px;
    background: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
    cursor: pointer;
}

.brand-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #06b6d4;
    box-shadow: 0 0 10px #06b6d4;
    animation: pulseGlow 2s infinite ease-in-out;
}

@keyframes pulseGlow {
    0%, 100% { transform: scale(1); opacity: 1; }
    50%      { transform: scale(1.3); opacity: 0.7; }
}

.nav-progress {
    display: flex;
    align-items: center;
    gap: 18px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-dim);
}

.nav-step {
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.nav-step.active {
    color: #6366f1;
    font-weight: 700;
}

.nav-step.active .nav-step-dot {
    background: #6366f1;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.6);
}

.nav-step-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--border);
    transition: var(--transition);
}

.nav-divider {
    color: var(--border);
    font-weight: 300;
}

.decorations {
    display: none !important;
}

.home-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: 100px;
    background: #ffffff;
    color: var(--text);
    font-family: var(--font);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-subtle);
}

.home-btn:hover {
    border-color: #6366f1;
    color: #6366f1;
    transform: translateY(-1px);
    box-shadow: var(--shadow-card);
}

body[data-screen="welcome"] .home-btn {
    display: none;
}

/* ===== SCREENS ===== */
.screen {
    min-height: 100vh;
    display: none;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    padding: 96px 24px 56px;
}

.screen.active {
    display: flex;
    animation: screenFadeIn 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes screenFadeIn {
    from { opacity: 0; transform: translateY(12px) scale(0.99); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.container {
    width: 100%;
    max-width: 480px;
    padding: 36px 28px;
    text-align: center;
}

/* ===== WELCOME HERO SCREEN SHOWCASE ===== */
#screen-welcome {
    padding: 80px 24px 40px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-canvas {
    position: relative;
    width: 100%;
    max-width: 1280px;
    min-height: calc(100vh - 120px);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

/* Subtly technical background ruler accents */
.canvas-grid-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.45;
}

.canvas-ruler-h {
    position: absolute;
    top: 50%;
    left: 4%;
    right: 4%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(148, 163, 184, 0.2) 20%, rgba(148, 163, 184, 0.2) 80%, transparent);
}

.canvas-ruler-v {
    position: absolute;
    left: 50%;
    top: 4%;
    bottom: 4%;
    width: 1px;
    background: linear-gradient(180deg, transparent, rgba(148, 163, 184, 0.2) 20%, rgba(148, 163, 184, 0.2) 80%, transparent);
}

.welcome-container {
    position: relative;
    z-index: 10;
    max-width: 640px;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 20px;
    text-align: center;
    background: rgba(248, 250, 252, 0.45);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius-xl);
}

.welcome-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 3px;
    color: #4f46e5;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(99, 102, 241, 0.22);
    padding: 7px 18px;
    border-radius: 100px;
    margin-bottom: 24px;
    text-transform: uppercase;
    box-shadow: 0 2px 10px rgba(99, 102, 241, 0.08);
}

.welcome-label-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #06b6d4;
    box-shadow: 0 0 8px #06b6d4;
    animation: pulseGlow 2s infinite ease-in-out;
}

.welcome-title {
    font-weight: 900;
    font-size: 5.4rem;
    line-height: 0.98;
    color: #0f172a;
    margin-bottom: 20px;
    letter-spacing: -3.5px;
    text-transform: uppercase;
}

.welcome-title .title-accent {
    background: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.welcome-sub {
    color: var(--text-dim);
    font-size: 1.1rem;
    font-weight: 450;
    margin-bottom: 32px;
    max-width: 460px;
    line-height: 1.5;
}

.welcome-actions {
    margin-bottom: 28px;
}

.hero-trust-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-dim);
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.75);
    border: 1px solid var(--border);
    border-radius: 100px;
    box-shadow: var(--shadow-subtle);
}

.trust-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.trust-sep {
    color: var(--border);
}

/* Floating Art-Directed Composition */
.hero-samples-composition {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 5;
}

.hero-sample-item {
    position: absolute;
    pointer-events: auto;
    cursor: pointer;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), filter 0.4s ease;
    outline: none;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-sample-item:focus-visible {
    outline: 2px solid #06b6d4;
    border-radius: 12px;
}

.sample-png {
    display: block;
    height: auto;
    object-fit: contain;
    user-select: none;
    -webkit-user-drag: none;
    pointer-events: none;
}

/* Material Sizing & Realistic Natural Drop Shadows */
.sample-metal { width: 210px; filter: drop-shadow(0 14px 28px rgba(15, 23, 42, 0.12)); }
.sample-wood { width: 165px; filter: drop-shadow(0 16px 30px rgba(120, 53, 15, 0.16)); }
.sample-acrylic { width: 175px; filter: drop-shadow(0 16px 32px rgba(6, 182, 212, 0.22)); }
.sample-slate { width: 200px; filter: drop-shadow(0 18px 34px rgba(2, 6, 23, 0.24)); }
.sample-silver { width: 155px; filter: drop-shadow(0 14px 28px rgba(15, 23, 42, 0.14)); }
.sample-oak { width: 160px; filter: drop-shadow(0 14px 28px rgba(146, 64, 14, 0.15)); }

/* Interactive Hover Badge */
.sample-badge {
    position: absolute;
    bottom: -32px;
    left: 50%;
    transform: translateX(-50%) translateY(6px);
    background: rgba(15, 23, 42, 0.92);
    color: #ffffff;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    padding: 5px 14px;
    border-radius: 100px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 14px rgba(0,0,0,0.18);
    z-index: 20;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-sample-item:hover .sample-badge {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Equidistant Radial Arc Positioning & Subtle Controlled Rotations */
/* Left Side Cluster (Top -> Mid -> Bottom) */
.sample-pos-tl {
    top: 6%;
    left: 3%;
    transform: translate3d(var(--px, 0px), var(--py, 0px), 0) rotate(-5deg);
    animation: sampleFloat1 8s ease-in-out infinite alternate;
}

.sample-pos-ml {
    top: 42%;
    left: 4%;
    transform: translate3d(var(--px, 0px), var(--py, 0px), 0) rotate(4deg);
    animation: sampleFloat2 9s ease-in-out infinite alternate;
}

.sample-pos-bl {
    bottom: 8%;
    left: 6%;
    transform: translate3d(var(--px, 0px), var(--py, 0px), 0) rotate(-3deg);
    animation: sampleFloat3 8.5s ease-in-out infinite alternate;
}

/* Right Side Cluster (Top -> Mid -> Bottom) */
.sample-pos-tr {
    top: 5%;
    right: 4%;
    transform: translate3d(var(--px, 0px), var(--py, 0px), 0) rotate(5deg);
    animation: sampleFloat2 9.5s ease-in-out infinite alternate;
}

.sample-pos-mr {
    top: 40%;
    right: 3%;
    transform: translate3d(var(--px, 0px), var(--py, 0px), 0) rotate(-4deg);
    animation: sampleFloat4 8s ease-in-out infinite alternate;
}

.sample-pos-br {
    bottom: 7%;
    right: 5%;
    transform: translate3d(var(--px, 0px), var(--py, 0px), 0) rotate(3deg);
    animation: sampleFloat1 10s ease-in-out infinite alternate;
}

/* Hover Elevations */
.hero-sample-item:hover {
    z-index: 30;
    animation-play-state: paused;
}

.sample-pos-tl:hover { transform: translate3d(var(--px, 0px), calc(var(--py, 0px) - 6px), 0) rotate(-3deg) scale(1.04); }
.sample-pos-tr:hover { transform: translate3d(var(--px, 0px), calc(var(--py, 0px) - 6px), 0) rotate(3deg) scale(1.04); }
.sample-pos-bl:hover { transform: translate3d(var(--px, 0px), calc(var(--py, 0px) - 6px), 0) rotate(-1deg) scale(1.04); }
.sample-pos-br:hover { transform: translate3d(var(--px, 0px), calc(var(--py, 0px) - 6px), 0) rotate(1deg) scale(1.04); }
.sample-pos-mr:hover { transform: translate3d(var(--px, 0px), calc(var(--py, 0px) - 6px), 0) rotate(-2deg) scale(1.04); }
.sample-pos-ml:hover { transform: translate3d(var(--px, 0px), calc(var(--py, 0px) - 6px), 0) rotate(2deg) scale(1.04); }

/* Ultra-Subtle 2-5px Drift Animations */
@keyframes sampleFloat1 {
    0% { transform: translate3d(var(--px, 0px), var(--py, 0px), 0) rotate(-5deg); }
    100% { transform: translate3d(var(--px, 0px), calc(var(--py, 0px) - 4px), 0) rotate(-3deg); }
}

@keyframes sampleFloat2 {
    0% { transform: translate3d(var(--px, 0px), var(--py, 0px), 0) rotate(5deg); }
    100% { transform: translate3d(var(--px, 0px), calc(var(--py, 0px) - 5px), 0) rotate(7deg); }
}

@keyframes sampleFloat3 {
    0% { transform: translate3d(var(--px, 0px), var(--py, 0px), 0) rotate(-3deg); }
    100% { transform: translate3d(var(--px, 0px), calc(var(--py, 0px) - 3px), 0) rotate(-1deg); }
}

@keyframes sampleFloat4 {
    0% { transform: translate3d(var(--px, 0px), var(--py, 0px), 0) rotate(-4deg); }
    100% { transform: translate3d(var(--px, 0px), calc(var(--py, 0px) - 5px), 0) rotate(-6deg); }
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 36px;
    border: none;
    border-radius: 100px;
    font-family: var(--font);
    font-size: 0.98rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 0.2px;
    outline: none;
}

.btn-arrow {
    transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary {
    background: var(--primary-gradient);
    color: #ffffff;
    box-shadow: 0 6px 20px -2px rgba(99, 102, 241, 0.4);
    border: none;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-gradient-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 28px -2px rgba(99, 102, 241, 0.5);
}

.btn-primary:hover:not(:disabled) .btn-arrow {
    transform: translateX(4px);
}

.btn-primary:disabled {
    background: var(--border);
    color: #94a3b8;
    cursor: not-allowed;
    box-shadow: none;
}

.btn-primary:disabled .btn-arrow {
    opacity: 0.4;
}

.btn-secondary {
    background: #ffffff;
    color: var(--text);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-subtle);
}

.btn-secondary:hover {
    border-color: #6366f1;
    color: #6366f1;
    background: rgba(99, 102, 241, 0.04);
}

/* ===== CONFIGURATOR 2-COLUMN GRID ===== */
.create-container {
    width: 100%;
    max-width: 1080px;
    background: transparent;
    padding: 0;
    margin: 0 auto;
}

.configurator-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    width: 100%;
}

@media (min-width: 900px) {
    .configurator-grid {
        grid-template-columns: 1.18fr 1fr;
        gap: 40px;
        align-items: start;
    }
}

/* Left Column: Live Product Preview Stage */
.preview-column {
    position: sticky;
    top: 88px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.preview-box {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 44px 28px 32px;
    box-shadow: var(--shadow-card);
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.preview-box::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 45%, rgba(99, 102, 241, 0.08) 0%, rgba(6, 182, 212, 0.04) 40%, rgba(255, 255, 255, 0) 75%);
    pointer-events: none;
}

.preview-top-bar {
    position: absolute;
    top: 18px;
    left: 24px;
    right: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 2;
}

.preview-badge {
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: #6366f1;
    background: rgba(99, 102, 241, 0.08);
    padding: 3px 10px;
    border-radius: 100px;
    text-transform: uppercase;
}

.preview-mode-switcher {
    display: flex;
    background: var(--border-light);
    padding: 3px;
    border-radius: 100px;
    border: 1px solid var(--border);
}

.preview-mode-btn {
    padding: 4px 14px;
    border: none;
    border-radius: 100px;
    background: transparent;
    color: var(--text-dim);
    font-family: var(--font);
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}

.preview-mode-btn.active {
    background: #ffffff;
    color: #6366f1;
    box-shadow: 0 2px 6px rgba(99, 102, 241, 0.15);
}

.keychain-preview {
    width: 100%;
    max-width: 400px;
    margin: 24px auto 0;
    transition: var(--transition);
    position: relative;
    z-index: 1;
}

.keychain-svg {
    width: 100%;
    height: auto;
    display: block;
    filter: drop-shadow(0 8px 24px rgba(99, 102, 241, 0.12));
}

.keychain-svg text#keychain-text {
    fill: none;
    stroke: #0f172a;
    stroke-width: 0.22;
}

.keychain-svg rect, .keychain-svg circle, .keychain-svg path {
    stroke: #0f172a;
    stroke-width: 0.4;
    transition: var(--transition);
}

/* Colorful Material Surface Finishes */
.preview-box[data-material="metal"] .keychain-svg rect,
.preview-box[data-material="metal"] .keychain-svg circle,
.preview-box[data-material="metal"] .keychain-svg path {
    fill: #f1f5f9;
    stroke: #475569;
}

.preview-box[data-material="wood"] .keychain-svg rect,
.preview-box[data-material="wood"] .keychain-svg circle,
.preview-box[data-material="wood"] .keychain-svg path {
    fill: #f59e0b;
    stroke: #78350f;
}

.preview-box[data-material="wood"] .keychain-svg text#keychain-text {
    stroke: #451a03;
}

.preview-box[data-material="acrylic"] .keychain-svg rect,
.preview-box[data-material="acrylic"] .keychain-svg circle,
.preview-box[data-material="acrylic"] .keychain-svg path {
    fill: rgba(6, 182, 212, 0.12);
    stroke: #06b6d4;
}

.preview-box[data-material="acrylic"] .keychain-svg text#keychain-text {
    stroke: #0e7490;
}

.preview-box.view-technical .keychain-svg rect,
.preview-box.view-technical .keychain-svg circle,
.preview-box.view-technical .keychain-svg path {
    fill: none !important;
    stroke: #0f172a !important;
}

.preview-box.view-product line,
.preview-box.view-product text:not(#keychain-text) {
    opacity: 0;
    transition: opacity 0.2s ease;
}

.preview-hint {
    color: var(--text-dim);
    font-size: 0.78rem;
    margin-top: 20px;
    font-weight: 500;
}

/* Right Column: Customization Controls Stack */
.controls-column {
    display: flex;
    flex-direction: column;
    gap: 28px;
    text-align: left;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 36px 32px;
    box-shadow: var(--shadow-card);
}

.create-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.create-section-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--text-dim);
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.step-num {
    font-size: 0.95rem;
    color: #6366f1;
    font-weight: 700;
    line-height: 1;
}

/* Shape Grid (Horizontal Cards) */
.shape-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    width: 100%;
}

.shape-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: #ffffff;
    color: var(--text);
    cursor: pointer;
    text-align: center;
    transition: var(--transition);
    outline: none;
    min-height: 106px;
}

.shape-card:hover {
    border-color: #6366f1;
    transform: translateY(-2px);
    box-shadow: var(--shadow-card);
}

.shape-card.selected {
    border-color: #6366f1;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(6, 182, 212, 0.04) 100%);
    box-shadow: inset 0 0 0 1.5px #6366f1, 0 6px 20px -4px rgba(99, 102, 241, 0.15);
}

.shape-card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dim);
    transition: var(--transition);
}

.shape-card.selected .shape-card-icon {
    color: #6366f1;
}

.shape-card-title {
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--text);
}

.shape-card-desc {
    font-size: 0.7rem;
    color: var(--text-dim);
    font-weight: 600;
}

/* Material Switcher Grid */
.material-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.material-card {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: #ffffff;
    color: var(--text);
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}

.material-card:hover {
    border-color: #6366f1;
    transform: translateY(-1px);
}

.material-card.selected {
    border-color: #6366f1;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(6, 182, 212, 0.04) 100%);
    color: #4f46e5;
    box-shadow: inset 0 0 0 1px #6366f1;
}

.material-swatch {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 1px solid rgba(0,0,0,0.12);
}

.swatch-metal { background: linear-gradient(135deg, #cbd5e1 0%, #64748b 100%); }
.swatch-wood  { background: linear-gradient(135deg, #f59e0b 0%, #b45309 100%); }
.swatch-acrylic { background: linear-gradient(135deg, #38bdf8 0%, #06b6d4 100%); }

/* Engraving Style Segmented Switcher (Minimal Structure & Balanced Spacing) */
.mode-segmented-control {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    background: transparent;
    padding: 0;
    border: none;
}

.mode-tab {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: #ffffff;
    color: var(--text);
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.mode-tab:hover {
    border-color: #6366f1;
    transform: translateY(-1px);
    box-shadow: var(--shadow-subtle);
}

.mode-tab.active {
    border-color: #6366f1;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(6, 182, 212, 0.04) 100%);
    color: #4f46e5;
    box-shadow: inset 0 0 0 1.5px #6366f1;
}

.mode-tab-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.mode-tab-title {
    font-size: 0.88rem;
    font-weight: 800;
    color: var(--text);
}

.mode-tab-sub {
    font-size: 0.72rem;
    font-weight: 600;
    color: #6366f1;
}

/* Customization Panel Controls */
.mode-panel {
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.input-group {
    position: relative;
    text-align: left;
}

.input-group label {
    display: block;
    font-size: 0.72rem;
    font-weight: 800;
    color: var(--text-dim);
    margin-bottom: 8px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.input-group input {
    width: 100%;
    padding: 16px 18px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text);
    font-family: var(--font);
    font-size: 1.05rem;
    font-weight: 600;
    outline: none;
    transition: var(--transition);
}

.input-group input:focus {
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

.char-count {
    position: absolute;
    right: 16px;
    bottom: 16px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-dim);
}

/* Font Picker Chips Grid */
.font-picker {
    text-align: left;
}

.font-picker-label {
    display: block;
    font-size: 0.72rem;
    font-weight: 800;
    color: var(--text-dim);
    margin-bottom: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.font-chips {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(135px, 1fr));
    gap: 10px;
}

.font-chip {
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: #ffffff;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 4px;
    transition: var(--transition);
}

.font-chip:hover {
    border-color: #6366f1;
    transform: translateY(-1px);
}

.font-chip.selected {
    border-color: #6366f1;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(6, 182, 212, 0.04) 100%);
    box-shadow: inset 0 0 0 1px #6366f1;
}

.font-chip-text {
    font-size: 1.05rem;
    line-height: 1.2;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
}

.font-chip-name {
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--text-dim);
    text-transform: uppercase;
}

/* Emoji Accordion */
.emoji-section {
    text-align: left;
}

.emoji-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: #ffffff;
    color: var(--text);
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.emoji-toggle:hover {
    border-color: #6366f1;
    color: #6366f1;
}

.emoji-panel {
    margin-top: 10px;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: #ffffff;
    max-height: 220px;
    overflow-y: auto;
}

.emoji-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
}

.emoji-btn {
    width: 100%;
    aspect-ratio: 1;
    border: none;
    border-radius: 6px;
    background: transparent;
    font-size: 1.3rem;
    cursor: pointer;
    transition: background 0.15s ease;
}

.emoji-btn:hover {
    background: var(--border-light);
}

/* Price Tag Card */
.price-tag {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(6, 182, 212, 0.03) 100%);
    border: 1px solid rgba(99, 102, 241, 0.18);
    border-radius: var(--radius-lg);
}

.price-label {
    font-size: 0.92rem;
    font-weight: 800;
    color: var(--text);
}

.price-subtitle {
    font-size: 0.75rem;
    color: var(--text-dim);
}

.price-right {
    display: flex;
    align-items: baseline;
    gap: 2px;
}

.price-currency {
    font-size: 1.1rem;
    font-weight: 800;
    color: #6366f1;
}

.price-amount {
    font-size: 1.8rem;
    font-weight: 900;
    color: #6366f1;
}

/* Image Dropzone */
.img-keychain {
    position: relative;
    width: 100%;
    max-width: 400px;
    aspect-ratio: 72 / 35;
    margin: 0 auto;
    background: #ffffff;
    border-radius: 8px;
}

.img-canvas {
    position: absolute;
    display: none;
    filter: invert(1);
}

.img-keychain.has-image .img-canvas {
    display: block;
}

.img-overlay {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.img-dropzone {
    position: absolute;
    inset: 4%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border: 1.5px dashed rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-md);
    background: rgba(99, 102, 241, 0.02);
    color: var(--text-dim);
    cursor: pointer;
    padding: 14px;
    transition: var(--transition);
}

.img-dropzone:hover {
    border-color: #6366f1;
    background: rgba(99, 102, 241, 0.06);
    color: #6366f1;
}

.img-keychain.has-image .img-dropzone {
    display: none;
}

.img-dropzone-title {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text);
}

.img-dropzone-hint {
    font-size: 0.72rem;
    color: var(--text-dim);
}

.image-action-row {
    display: flex;
    gap: 10px;
}

.img-controls {
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: #ffffff;
    text-align: left;
}

.control-row {
    margin-bottom: 14px;
}

.control-row label {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.control-row input[type="range"] {
    width: 100%;
}

.control-row-inline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0;
}

.img-error {
    padding: 10px 14px;
    border: 1px solid #fecaca;
    background: #fef2f2;
    border-radius: 8px;
    color: #991b1b;
    font-size: 0.82rem;
}

/* Payment & Queue Screens */
.loader-ring {
    width: 52px;
    height: 52px;
    margin: 0 auto 24px;
    border: 3px solid var(--border);
    border-top-color: #6366f1;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.success-icon {
    width: 68px;
    height: 68px;
    margin: 0 auto 20px;
}

.checkmark-circle {
    fill: none;
    stroke: var(--success);
    stroke-width: 2;
}

.checkmark-tick {
    fill: none;
    stroke: var(--success);
    stroke-width: 3;
    stroke-linecap: round;
}

.queue-position {
    font-size: 2.4rem;
    font-weight: 900;
    margin-bottom: 8px;
}

.queue-position span { color: #6366f1; }

.order-progress {
    margin: 28px 0;
    text-align: left;
}

.progress-step {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 8px;
}

.progress-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.82rem;
}

.progress-step.completed .progress-icon {
    background: var(--success);
    color: #fff;
}

.progress-step.active .progress-icon {
    background: #6366f1;
    color: #fff;
}

.progress-title {
    font-size: 0.92rem;
    font-weight: 700;
}

.progress-sub {
    font-size: 0.78rem;
    color: var(--text-dim);
}

.progress-line {
    width: 2px;
    height: 14px;
    background: var(--border);
    margin-left: 13px;
    margin-top: -3px;
    margin-bottom: 3px;
}

/* ===== CAMERA MODAL (CENTERED POPUP) ===== */
.camera-modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1050;
    padding: 20px;
}

.camera-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.78);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.camera-box {
    position: relative;
    z-index: 10;
    background: #ffffff;
    border-radius: var(--radius-xl);
    padding: 28px;
    width: 100%;
    max-width: 600px;
    box-shadow: 0 24px 50px -12px rgba(15, 23, 42, 0.35);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 20px;
    animation: modalPop 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPop {
    from { opacity: 0; transform: scale(0.95) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.camera-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.camera-header h3 {
    font-size: 1rem;
    font-weight: 800;
    letter-spacing: 1.5px;
    color: var(--text);
}

.camera-close-btn {
    border: none;
    background: transparent;
    font-size: 1.6rem;
    line-height: 1;
    color: var(--text-dim);
    cursor: pointer;
    padding: 4px;
    transition: var(--transition);
}

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

.camera-container {
    width: 100%;
    max-height: 55vh;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #000000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.camera-container video {
    width: 100%;
    height: auto;
    max-height: 55vh;
    object-fit: cover;
}

.camera-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

/* ===== SHAPE-AWARE CROPPER MASKS ===== */
.crop-modal {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1060;
}

.crop-box {
    background: #fff;
    padding: 28px;
    border-radius: var(--radius-xl);
    max-width: 520px;
    width: 90%;
    border: 1px solid var(--border);
    box-shadow: 0 24px 48px -12px rgba(15, 23, 42, 0.3);
}

.crop-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.crop-close-btn {
    border: none;
    background: transparent;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-dim);
    transition: var(--transition);
}

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

.crop-container {
    max-height: 340px;
    overflow: hidden;
    margin-bottom: 20px;
    border-radius: var(--radius-md);
    background: #f8fafc;
    display: flex;
    align-items: center;
    justify-content: center;
}

.crop-container img {
    max-width: 100%;
}

.crop-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

/* Shape specific cropper box boundary visual feedback */
.crop-shape-circle .cropper-view-box,
.crop-shape-circle .cropper-face {
    border-radius: 50% !important;
}

.crop-shape-heart .cropper-view-box,
.crop-shape-heart .cropper-face {
    clip-path: path('M 50 90 C 25 70 0 50 0 28 C 0 12 12 0 28 0 C 38 0 45 6 50 14 C 55 6 62 0 72 0 C 88 0 100 12 100 28 C 100 50 75 70 50 90 Z');
}

/* Authentic Wooden Keychain Preview Texture & Styling */
.preview-box[data-material="wood"] {
    background: #ffffff;
}

.preview-box[data-material="wood"] .keychain-svg rect,
.preview-box[data-material="wood"] .keychain-svg circle,
.preview-box[data-material="wood"] .keychain-svg path {
    fill: #fcf8f2;
    stroke: #1e293b;
    stroke-width: 0.4;
}

.preview-box[data-material="wood"] .keychain-svg text#keychain-text {
    stroke: #0f172a;
    stroke-width: 0.22;
}

.preview-box[data-material="wood"] .img-keychain {
    background: #fcf8f2;
    box-shadow: 0 4px 14px rgba(15, 23, 42, 0.08);
}

/* ===== PHONE NUMBER INPUT STYLES ===== */
.phone-input-group {
    margin-top: 20px;
    margin-bottom: 20px;
    text-align: left;
}

.phone-label {
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 1.2px;
    color: var(--text-muted, #64748b);
    margin-bottom: 8px;
    text-transform: uppercase;
}

.phone-subtitle {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: normal;
    color: #64748b;
    text-transform: none;
}

.phone-input-wrapper {
    display: flex;
    align-items: center;
    background: rgba(248, 250, 252, 0.9);
    border: 1.5px solid var(--border, #e2e8f0);
    border-radius: var(--radius-md, 12px);
    overflow: hidden;
    transition: all 0.2s ease;
}

.phone-input-wrapper:focus-within {
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
    background: #ffffff;
}

.country-code {
    padding: 12px 14px;
    background: #f1f5f9;
    font-weight: 700;
    font-size: 0.92rem;
    color: #334155;
    border-right: 1px solid var(--border, #e2e8f0);
    user-select: none;
    white-space: nowrap;
}

.phone-field {
    flex: 1;
    padding: 12px 16px;
    border: none;
    outline: none;
    font-family: inherit;
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    color: #0f172a;
    background: transparent;
}

.phone-field::placeholder {
    color: #94a3b8;
    letter-spacing: normal;
    font-weight: 400;
}

.phone-hint {
    display: block;
    font-size: 0.76rem;
    color: var(--text-dim, #94a3b8);
    margin-top: 6px;
    transition: color 0.2s ease;
}

.phone-input-group.invalid .phone-input-wrapper {
    border-color: #ef4444;
}

.phone-input-group.invalid .phone-hint {
    color: #ef4444;
    font-weight: 600;
}

.phone-input-group.valid .phone-input-wrapper {
    border-color: #10b981;
}

.phone-input-group.valid .phone-hint {
    color: #059669;
}

/* ===== PHONE NUMBER CHECKOUT MODAL ===== */
.phone-modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1060;
    padding: 20px;
}

.phone-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.78);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.phone-modal-box {
    position: relative;
    z-index: 10;
    background: #ffffff;
    border-radius: var(--radius-xl, 20px);
    padding: 28px;
    width: 100%;
    max-width: 440px;
    box-shadow: 0 24px 50px -12px rgba(15, 23, 42, 0.35);
    border: 1px solid var(--border, #e2e8f0);
    display: flex;
    flex-direction: column;
    text-align: center;
}

.phone-modal-header {
    margin-bottom: 16px;
    position: relative;
}

.phone-modal-icon {
    font-size: 2.2rem;
    margin-bottom: 8px;
}

.phone-modal-header h3 {
    font-size: 1.15rem;
    font-weight: 800;
    color: #0f172a;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.phone-modal-sub {
    font-size: 0.84rem;
    color: var(--text-muted, #64748b);
    line-height: 1.4;
}

.phone-modal-close-btn {
    position: absolute;
    top: -8px;
    right: -8px;
    background: #f1f5f9;
    border: none;
    font-size: 1.4rem;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    color: #64748b;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.phone-modal-close-btn:hover {
    background: #e2e8f0;
    color: #0f172a;
}

/* RESPONSIVE LAYOUT & MEDIA QUERIES */
@media (max-width: 1199px) {
    .sample-metal { width: 175px; }
    .sample-wood { width: 140px; }
    .sample-acrylic { width: 145px; }
    .sample-slate { width: 165px; }
    .sample-silver { width: 130px; }
    .sample-oak { width: 135px; }
    .welcome-title { font-size: 4.4rem; }
    .sample-pos-tl { left: 1%; top: 4%; }
    .sample-pos-tr { right: 1%; top: 4%; }
    .sample-pos-bl { left: 2%; bottom: 6%; }
    .sample-pos-br { right: 2%; bottom: 5%; }
    .sample-pos-ml { left: 1%; top: 44%; }
    .sample-pos-mr { right: 1%; top: 42%; }
}

@media (max-width: 899px) {
    #screen-welcome {
        padding: 72px 16px 32px;
    }
    .hero-canvas {
        min-height: auto;
        flex-direction: column;
        justify-content: flex-start;
    }
    .welcome-container {
        max-width: 100%;
        padding: 24px 16px;
        background: rgba(255, 255, 255, 0.65);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        box-shadow: none;
    }
    .welcome-title { font-size: 3.4rem; letter-spacing: -2px; }
    .configurator-grid { grid-template-columns: 1fr; gap: 24px; }
    .preview-column { position: relative; top: 0; }
    .controls-column { padding: 28px 20px; }
    .shape-card { min-height: 96px; }

    .hero-samples-composition {
        position: relative;
        inset: auto;
        width: 100%;
        height: 340px;
        margin-top: 20px;
    }
    .sample-pos-mr, .sample-pos-ml { display: none; }
    .sample-pos-tl { top: 10px; left: 4%; transform: rotate(-5deg); }
    .sample-pos-tr { top: 10px; right: 4%; transform: rotate(5deg); }
    .sample-pos-bl { bottom: 15px; left: 8%; transform: rotate(-3deg); }
    .sample-pos-br { bottom: 15px; right: 8%; transform: rotate(3deg); }
}

@media (max-width: 599px) {
    .welcome-title { font-size: 2.7rem; letter-spacing: -1.5px; }
    .welcome-sub { font-size: 0.96rem; margin-bottom: 24px; }
    .hero-samples-composition { height: 280px; margin-top: 12px; }
    .sample-metal { width: 135px; }
    .sample-wood { width: 110px; }
    .sample-acrylic { width: 115px; }
    .sample-slate { width: 125px; }
    .sample-pos-tl { top: 5px; left: 2px; }
    .sample-pos-tr { top: 5px; right: 2px; }
    .sample-pos-bl { bottom: 10px; left: 5px; }
    .sample-pos-br { bottom: 10px; right: 5px; }
    .hero-trust-bar { font-size: 0.72rem; gap: 8px; padding: 8px 14px; }
}

@media (prefers-reduced-motion: reduce) {
    .sample-pos-tl, .sample-pos-tr, .sample-pos-bl, .sample-pos-br, .sample-pos-mr, .sample-pos-ml {
        animation: none !important;
    }
}