/* ==========================================
   Passport Sheet Generator - Styles
   ========================================== */

/* CSS Variables */
:root {
    /* Colors - Dark Theme */
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a35;
    --bg-card: #252542;
    --bg-elevated: #2d2d4a;

    --text-primary: #ffffff;
    --text-secondary: #a0a0b8;
    --text-muted: #6b6b82;

    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);

    --success: #22c55e;
    --warning: #f59e0b;
    --error: #ef4444;

    --border-color: rgba(255, 255, 255, 0.08);
    --border-active: rgba(99, 102, 241, 0.5);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Background Pattern */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ==========================================
   Header
   ========================================== */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(15, 15, 35, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo svg {
    flex-shrink: 0;
}

.nav {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

/* ==========================================
   Sections
   ========================================== */
.section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.step-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--accent-gradient);
    border-radius: 50%;
    font-size: 0.875rem;
    font-weight: 600;
    color: white;
}

.section-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

/* ==========================================
   Upload Zone
   ========================================== */
.upload-zone {
    background: var(--bg-card);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.upload-zone:hover,
.upload-zone.drag-over {
    border-color: var(--accent-primary);
    background: var(--bg-elevated);
    box-shadow: var(--shadow-glow);
}

.upload-zone.drag-over {
    transform: scale(1.02);
}

.upload-icon {
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
    transition: color var(--transition-normal);
}

.upload-zone:hover .upload-icon {
    color: var(--accent-primary);
}

.upload-text {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.upload-subtext {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

.upload-hint {
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-top: var(--spacing-md);
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-card);
    border-color: var(--border-active);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    background: var(--bg-card);
    border-color: var(--accent-primary);
}

.btn-accent {
    background: var(--success);
    color: white;
}

.btn-accent:hover {
    background: #1da750;
    box-shadow: 0 0 20px rgba(34, 197, 94, 0.3);
}

.btn-text {
    background: transparent;
    color: var(--accent-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
}

.btn-text:hover {
    background: rgba(99, 102, 241, 0.1);
}

.btn-whatsapp {
    background: #25D366;
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-whatsapp:hover {
    background: #1fba59;
    box-shadow: 0 0 20px rgba(37, 211, 102, 0.4);
    transform: translateY(-2px);
}

/* ==========================================
   Crop Section
   ========================================== */
.crop-container {
    display: grid;
    gap: var(--spacing-lg);
}

.crop-area {
    position: relative;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
    max-height: 500px;
}

.crop-area img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.crop-box {
    position: absolute;
    border: 2px solid var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.5);
    cursor: move;
}

.crop-handle {
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: nwse-resize;
}

.crop-handle.top-left {
    top: -8px;
    left: -8px;
    cursor: nwse-resize;
}

.crop-handle.top-right {
    top: -8px;
    right: -8px;
    cursor: nesw-resize;
}

.crop-handle.bottom-left {
    bottom: -8px;
    left: -8px;
    cursor: nesw-resize;
}

.crop-handle.bottom-right {
    bottom: -8px;
    right: -8px;
    cursor: nwse-resize;
}

.crop-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-card);
    border-radius: var(--radius-md);
}

.zoom-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.zoom-control label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.zoom-control input[type="range"] {
    width: 120px;
}

#zoomValue {
    color: var(--text-muted);
    font-size: 0.875rem;
    min-width: 50px;
}

.crop-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

/* ==========================================
   Settings Section
   ========================================== */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.setting-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.setting-card.full-width {
    grid-column: 1 / -1;
}

.setting-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

/* Paper Options */
.paper-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.paper-option input {
    display: none;
}

.paper-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.paper-option input:checked+.paper-card {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
}

.paper-card:hover {
    border-color: var(--border-active);
}

.paper-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 700;
    color: white;
    border-radius: var(--radius-sm);
}

.paper-icon.a4 {
    width: 35px;
    height: 50px;
    background: var(--accent-gradient);
}

.paper-icon.r4 {
    width: 40px;
    height: 30px;
    background: linear-gradient(135deg, #ec4899, #f43f5e);
}

.paper-card span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.paper-card small {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Size Options */
.size-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.size-option input {
    display: none;
}

.size-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.size-option input:checked+.size-card {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
}

.size-name {
    font-weight: 500;
}

.size-dim {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Count Options */
.count-options {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
}

.count-option input {
    display: none;
}

.count-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-sm);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
}

.count-option input:checked+.count-card {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
}

.count-card:hover {
    border-color: var(--border-active);
}

.count-num {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.count-card span:last-child {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Background Options */
.bg-options {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.bg-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
}

.bg-option input {
    display: none;
}

.bg-swatch {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: transparent;
    transition: all var(--transition-normal);
}

.bg-swatch.white {
    background: #ffffff;
}

.bg-swatch.blue {
    background: #1e88e5;
}

.bg-swatch.red {
    background: #dc2626;
}

.bg-swatch.transparent {
    background:
        linear-gradient(45deg, #ccc 25%, transparent 25%),
        linear-gradient(-45deg, #ccc 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #ccc 75%),
        linear-gradient(-45deg, transparent 75%, #ccc 75%);
    background-size: 12px 12px;
    background-position: 0 0, 0 6px, 6px -6px, -6px 0px;
}

.bg-option input:checked+.bg-swatch {
    border-color: var(--accent-primary);
    color: white;
    box-shadow: var(--shadow-glow);
}

.bg-swatch.white svg,
.bg-swatch.transparent svg {
    color: var(--accent-primary);
}

.bg-option span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Border Options */
.border-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.toggle-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
}

.toggle-option input {
    display: none;
}

.toggle {
    position: relative;
    width: 48px;
    height: 26px;
    background: var(--bg-secondary);
    border-radius: 13px;
    transition: background var(--transition-normal);
}

.toggle::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 20px;
    height: 20px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: all var(--transition-normal);
}

.toggle-option input:checked+.toggle {
    background: var(--accent-primary);
}

.toggle-option input:checked+.toggle::after {
    left: 25px;
    background: white;
}

.border-style-options {
    display: flex;
    gap: var(--spacing-md);
}

.border-style {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
}

.border-style input {
    display: none;
}

.border-demo {
    width: 60px;
    height: 40px;
    border: 2px solid var(--text-muted);
    border-radius: var(--radius-sm);
}

.border-demo.dashed {
    border-style: dashed;
}

.border-style input:checked+.border-demo {
    border-color: var(--accent-primary);
}

.border-style span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Adjustments */
.adjustments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.adjustment-control {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.adjustment-control label {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.adjustment-control label span:last-child {
    color: var(--text-muted);
}

/* Range Input Styling */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: var(--bg-secondary);
    border-radius: 3px;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--accent-gradient);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--accent-gradient);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-sm);
}

/* ==========================================
   Preview Section
   ========================================== */
.preview-container {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.preview-wrapper {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
}

#previewCanvas {
    max-width: 100%;
    max-height: 600px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
}

.preview-info {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.preview-info span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.preview-cropped {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
}

.preview-cropped h4 {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.cropped-preview {
    display: flex;
    justify-content: center;
}

#croppedPreview {
    width: 105px;
    height: 135px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    background: white;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
}

/* ==========================================
   History Section
   ========================================== */
.history-section .section-header {
    justify-content: space-between;
}

.history-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: var(--spacing-md);
}

.history-item {
    aspect-ratio: 35/45;
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-fast);
    border: 2px solid transparent;
}

.history-item:hover {
    transform: scale(1.05);
    border-color: var(--accent-primary);
}

.history-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.history-empty {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--text-muted);
    padding: var(--spacing-xl);
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.credit {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 500;
    margin-top: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
    opacity: 0.8;
}

.visitor-counter {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    margin-bottom: var(--spacing-md);
}

.visitor-counter p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin: 0;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-primary);
}

/* ==========================================
   Modal
   ========================================== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal.active {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-20px);
    }

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

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 36px;
    height: 36px;
    background: var(--bg-elevated);
    border: none;
    border-radius: 50%;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--error);
    color: white;
}

.modal-content h2 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    padding-right: var(--spacing-xl);
}

/* Steps List */
.steps-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.step-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.step-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--accent-gradient);
    border-radius: 50%;
    font-size: 0.875rem;
    font-weight: 600;
    flex-shrink: 0;
}

.step-item h4 {
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-xs);
}

.step-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ==========================================
   Toast Notification
   ========================================== */
.toast {
    position: fixed;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-elevated);
    color: var(--text-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: 0.9375rem;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1001;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--error);
}

/* ==========================================
   Print Styles
   ========================================== */
@media print {

    /* Hide everything by default */
    body * {
        visibility: hidden;
    }

    /* Reset body background */
    body {
        background: white !important;
        margin: 0;
        padding: 0;
    }

    /* Show only the print area and its contents */
    #print-area,
    #print-area * {
        visibility: visible;
    }

    #print-area {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        display: flex;
        justify-content: center;
        align-items: flex-start;
        /* Align top to respect margins if any */
    }

    /* Ensure image fits the page */
    #print-area img {
        max-width: 100%;
        height: auto;
        /* Force page break avoidance if needed */
        page-break-inside: avoid;
    }
}

/* ==========================================
   Responsive Styles
   ========================================== */
@media (max-width: 768px) {
    .header .container {
        height: 60px;
    }

    .nav {
        display: none;
    }

    .hero {
        padding: var(--spacing-xl) 0;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .section-header h2 {
        font-size: 1.25rem;
    }

    .upload-zone {
        padding: var(--spacing-xl);
    }

    .upload-icon svg {
        width: 48px;
        height: 48px;
    }

    .upload-text {
        font-size: 1rem;
    }

    .settings-grid {
        grid-template-columns: 1fr;
    }

    .preview-container {
        grid-template-columns: 1fr;
    }

    .preview-cropped {
        order: -1;
    }

    .action-buttons {
        flex-direction: column;
    }

    .action-buttons .btn {
        width: 100%;
    }

    .crop-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .zoom-control {
        justify-content: space-between;
    }

    .crop-buttons {
        flex-direction: column;
    }

    .crop-buttons .btn {
        width: 100%;
    }

    .adjustments-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .logo span {
        font-size: 1rem;
    }

    .logo svg {
        width: 32px;
        height: 32px;
    }

    .paper-options {
        grid-template-columns: 1fr;
    }

    .bg-options {
        justify-content: space-between;
    }

    .modal-content {
        padding: var(--spacing-lg);
    }
}

/* ==========================================
   Animations
   ========================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.section {
    animation: slideUp 0.5s ease forwards;
}

/* Loading State */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(15, 15, 35, 0.8);
    border-radius: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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