/* TattooTryOn - Material Design Theme (Percentage-based) */

:root {
    /* Colors - Light */
    --primary: #6750a4;
    --on-primary: #fff;
    --primary-container: #eaddff;
    --on-primary-container: #21005d;
    --secondary: #625b71;
    --secondary-container: #e8def8;
    --on-secondary-container: #1d192b;
    --surface: #fffbfe;
    --on-surface: #1c1b1f;
    --surface-variant: #e7e0ec;
    --on-surface-variant: #49454f;
    --outline: #79747e;
    --outline-variant: #c4c7c5;
    --error: #b3261e;
    --on-error: #fff;

    /* Typography & Shape */
    --font: 'Outfit', system-ui, sans-serif;
    --radius: 0.75rem;
    --shadow-1: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --shadow-2: 0 3px 6px rgba(0, 0, 0, 0.15), 0 2px 4px rgba(0, 0, 0, 0.12);
    --transition: 0.2s ease;
}

[data-theme="dark"] {
    --primary: #d0bcff;
    --on-primary: #381e72;
    --primary-container: #4f378b;
    --on-primary-container: #eaddff;
    --secondary: #ccc2dc;
    --secondary-container: #4a4458;
    --on-secondary-container: #e8def8;
    --surface: #1c1b1f;
    --on-surface: #e6e1e5;
    --surface-variant: #49454f;
    --on-surface-variant: #cac4d0;
    --outline: #938f99;
}

/* Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html,
body {
    height: 100%;
}

body {
    font-family: var(--font);
    background: var(--surface);
    color: var(--on-surface);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: background var(--transition), color var(--transition);
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    font-family: inherit;
    cursor: pointer;
}

/* App Bar */
.app-bar {
    height: 4rem;
    background: var(--surface);
    border-bottom: 1px solid var(--surface-variant);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-1);
    z-index: 100;
    flex-shrink: 0;
}

.app-bar-container {
    width: 100%;
    max-width: 1400px;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Logo Section (Left - Side by Side) */
.logo-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.site-logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 2.25rem;
    width: auto;
    object-fit: contain;
}

/* Studio Title (Next to logo) */
.studio-title {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    border-left: 2px solid var(--outline-variant);
    padding-left: 0.75rem;
}

.studio-icon {
    font-size: 1.25rem;
    color: var(--primary);
}

.studio-name {
    font-weight: 700;
    font-size: 1rem;
    color: var(--on-surface);
    letter-spacing: 0.01em;
}

/* Navigation (Right) */
.nav-links {
    display: flex;
    gap: 1.5rem;
    margin-left: auto;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--on-surface);
    white-space: nowrap;
    transition: color var(--transition);
}

.nav-link:hover {
    color: var(--primary);
}

.app-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.icon-btn {
    background: transparent;
    border: none;
    padding: 0.5rem;
    border-radius: 50%;
    color: var(--on-surface-variant);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition), color var(--transition);
}

.icon-btn:hover {
    background: var(--surface-variant);
    color: var(--primary);
}

.icon-btn:active {
    transform: scale(0.95);
}

.cart-btn {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    color: var(--on-surface-variant);
    transition: color var(--transition);
}

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

.cart-count {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--error);
    color: var(--on-error);
    font-size: 0.55rem;
    font-weight: 700;
    padding: 0.1rem 0.3rem;
    border-radius: 0.5rem;
    min-width: 0.9rem;
    text-align: center;
}

.search-btn svg {
    fill: currentColor;
}

.mobile-menu-btn {
    display: none;
}

/* Studio Branding (Centered) */
.studio-branding {
    background: var(--primary);
    color: var(--on-primary);
    text-align: center;
    padding: 0.5rem 1rem;
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    flex-shrink: 0;
}

/* Main Layout */
.main-layout {
    display: flex;
    flex: 1;
    min-height: 0;
    /* Important for flex children to respect overflow */
    overflow: hidden;
}

/* Sidebar - Percentage width */
.sidebar {
    width: 25%;
    min-width: 280px;
    max-width: 360px;
    background: var(--surface);
    border-right: 1px solid var(--outline-variant);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    height: 100%;
}

.sidebar-header {
    padding: 5% 5% 2%;
    flex-shrink: 0;
}

.sidebar-header h2 {
    font-size: 1.15rem;
    font-weight: 600;
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 4%;
    display: flex;
    flex-direction: column;
    gap: 4%;
    min-height: 0;
    /* Allow shrinking */
}

.sidebar-footer {
    padding: 4%;
    border-top: 1px solid var(--outline-variant);
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    flex-shrink: 0;
}

/* Cards */
.control-card {
    background: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius);
    padding: 4%;
    transition: border-color var(--transition), box-shadow var(--transition);
    flex-shrink: 0;
}

.control-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-1);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 0.75rem;
}

.step-badge {
    width: 1.5rem;
    height: 1.5rem;
    background: var(--secondary-container);
    color: var(--on-secondary-container);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.75rem;
    flex-shrink: 0;
}

.card-header h3 {
    font-size: 0.9rem;
    font-weight: 500;
    flex: 1;
}

.icon-btn-small {
    background: transparent;
    border: 1px solid var(--outline-variant);
    padding: 0.25rem;
    border-radius: 0.375rem;
    color: var(--on-surface-variant);
    display: flex;
    cursor: pointer;
}

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

/* Upload - Relative height */
.upload-area {
    border: 2px dashed var(--outline-variant);
    border-radius: var(--radius);
    padding: 12% 8%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    background: var(--surface-variant);
    overflow: hidden;
    transition: all var(--transition);
}

.upload-area:hover {
    border-color: var(--primary);
    background: color-mix(in srgb, var(--primary) 5%, var(--surface-variant));
}

.upload-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    color: var(--on-surface-variant);
}

.upload-placeholder p {
    font-size: 0.8rem;
    font-weight: 500;
}

.icon-lg {
    font-size: 1.75rem;
    color: var(--primary);
}

.preview-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: none;
}

.upload-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition);
    color: white;
}

.upload-area:hover .upload-overlay {
    opacity: 1;
}

.upload-area.has-image .preview-img {
    display: block;
}

.upload-area.has-image .upload-placeholder {
    display: none;
}

.upload-area.has-image {
    border-style: solid;
    border-color: var(--primary);
}

.notice-badge {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.65rem;
    color: var(--secondary);
    margin-top: 0.6rem;
    background: var(--secondary-container);
    padding: 0.4rem 0.6rem;
    border-radius: 0.375rem;
}

/* Sliders */
.slider-container {
    margin-bottom: 0.75rem;
}

.label-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.4rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--on-surface-variant);
}

.md-slider {
    width: 100%;
    height: 0.25rem;
    background: var(--secondary-container);
    border-radius: 0.125rem;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

.md-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 1rem;
    height: 1rem;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: transform 0.1s;
}

.md-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

/* Buttons */
.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    height: 2.5rem;
    padding: 0 1.25rem;
    border-radius: 1.25rem;
    font-weight: 500;
    font-size: 0.85rem;
    border: none;
    transition: all var(--transition);
}

.btn-filled {
    background: var(--primary);
    color: var(--on-primary);
    box-shadow: var(--shadow-1);
}

.btn-filled:hover:not(:disabled) {
    background: var(--primary-container);
    color: var(--on-primary-container);
    box-shadow: var(--shadow-2);
}

.btn-filled:disabled {
    background: var(--surface-variant);
    color: var(--on-surface-variant);
    cursor: not-allowed;
    box-shadow: none;
}

.btn-text {
    background: transparent;
    color: var(--primary);
}

.btn-text:hover {
    background: var(--secondary-container);
}

.full-width {
    width: 100%;
}

/* Canvas Area */
.canvas-area {
    flex: 1;
    background: var(--surface-variant);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3%;
    overflow: hidden;
    background-image: radial-gradient(var(--outline-variant) 1px, transparent 1px);
    background-size: 1.25rem 1.25rem;
    min-width: 0;
}

.canvas-wrapper {
    position: relative;
    box-shadow: var(--shadow-2);
    border-radius: 0.25rem;
    max-width: 95%;
    max-height: 95%;
    background: var(--surface);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Empty state sizing */
.canvas-wrapper:not(.has-image) {
    width: 90%;
    max-width: 28rem;
    aspect-ratio: 3/4;
}

#mainCanvas {
    display: block;
    max-width: 100%;
    max-height: 100%;
}

.empty-state {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--secondary);
    padding: 8%;
    animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(0.5rem);
    }

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

.empty-icon-circle {
    width: 4.5rem;
    height: 4.5rem;
    background: var(--secondary-container);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
}

.empty-icon-circle span {
    font-size: 2.25rem;
    color: var(--on-secondary-container);
}

.empty-state h2 {
    color: var(--on-surface);
    margin-bottom: 0.4rem;
    font-size: 1.15rem;
}

.empty-state p {
    font-size: 0.85rem;
}

/* Loader */
.loader-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(4px);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 20;
}

[data-theme="dark"] .loader-overlay {
    background: rgba(28, 27, 31, 0.85);
}

.loader-overlay.visible {
    display: flex;
}

.md-spinner {
    width: 2.5rem;
    height: 2.5rem;
    border: 3px solid var(--primary-container);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 0.75rem;
}

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

/* Instructions Card */
.instructions-card {
    background: var(--secondary-container);
    border-color: transparent;
}

.instructions-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.instructions-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--on-secondary-container);
}

.instructions-list li .material-symbols-outlined {
    font-size: 1.1rem;
    color: var(--primary);
}

/* Controls Below Canvas */
.floating-controls {
    background: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: 2rem;
    padding: 0.5rem 1.25rem;
    display: none;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    box-shadow: var(--shadow-1);
    margin-top: 1rem;
}

.floating-controls.visible {
    display: flex;
}

.floating-control-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--on-surface-variant);
}

.floating-control-group .material-symbols-outlined {
    font-size: 1.25rem;
    color: var(--primary);
}

.mini-slider {
    width: 80px;
    height: 4px;
    background: var(--secondary-container);
    border-radius: 2px;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

.mini-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

/* ==========================================================================
   Ad Zones
   ========================================================================== */

.ad-zone {
    background: linear-gradient(135deg, var(--surface-variant) 0%, var(--secondary-container) 100%);
    border: 2px dashed var(--outline-variant);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.ad-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--on-surface-variant);
    opacity: 0.6;
}

/* Sidebar Ad (above download) */
.ad-sidebar {
    width: 100%;
    min-height: 100px;
    margin-bottom: 1rem;
}

/* Right of Canvas Ad */
.ad-canvas-right {
    width: 160px;
    min-height: 600px;
    flex-shrink: 0;
    margin-left: 1rem;
}

/* Sticky Bottom Ad */
.ad-sticky-bottom {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 90px;
    z-index: 200;
    border-radius: 0;
    border: none;
    border-top: 1px solid var(--outline-variant);
    background: var(--surface);
}

/* Add bottom padding to body for sticky ad */
body {
    padding-bottom: 90px;
}

/* Responsive */
@media (max-width: 64rem) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .sidebar {
        width: 28%;
        min-width: 240px;
    }

    .studio-title {
        position: static;
        transform: none;
        flex: 1;
        justify-content: center;
    }
}

@media (max-width: 48rem) {
    .main-layout {
        flex-direction: column;
        overflow-y: auto;
        overflow-x: hidden;
    }

    .sidebar {
        width: 100%;
        max-width: none;
        order: 2;
        border-right: none;
        border-top: 1px solid var(--outline-variant);
        height: auto;
    }

    .sidebar-content {
        overflow-y: visible;
        max-height: none;
        padding-bottom: 2rem;
    }

    /* Canvas takes more space on mobile */
    .canvas-area {
        flex: none;
        height: auto;
        min-height: 60vh;
        order: 1;
        padding: 1rem;
        overflow: auto;
    }

    .canvas-wrapper {
        width: auto;
        max-width: none;
        max-height: none;
    }

    .canvas-wrapper.has-image {
        width: 100%;
    }

    #mainCanvas {
        max-width: 100%;
        max-height: none;
        width: 100%;
        height: auto;
    }

    /* Floating controls stack vertically on mobile */
    .floating-controls {
        flex-direction: column;
        padding: 0.75rem;
        gap: 0.5rem;
        border-radius: 1rem;
    }

    .floating-control-group {
        width: 100%;
        justify-content: space-between;
    }

    .mini-slider {
        flex: 1;
    }

    /* Hide studio title on very small screens */
    .studio-icon {
        display: none;
    }

    .studio-name {
        font-size: 0.9rem;
    }

    /* Hide right canvas ad on mobile */
    .ad-canvas-right {
        display: none;
    }

    /* Smaller sticky bottom ad on mobile */
    .ad-sticky-bottom {
        height: 60px;
    }

    body {
        padding-bottom: 60px;
    }
}