@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --primary-color: #3A7DFF;
    --primary-dark: #2563EB;
    --primary-light: #60A5FA;
    --secondary-color: #3EE9C3;
    --secondary-dark: #10D9C1;
    --accent-color: #FF9F43;
    --accent-dark: #F97316;
    --dark-base: #1C1F26;
    --light-base: #F5F7FA;
    --success-color: #3EE9C3;
    --error-color: #EF4444;
    --warning-color: #FF9F43;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --border-radius: 12px;
    --border-radius-lg: 16px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    min-height: 100vh;
    padding: 20px;
    color: var(--gray-800);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto 0 auto;
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.header {
    background: linear-gradient(135deg, var(--dark-base) 0%, var(--gray-800) 100%);
    color: var(--white);
    padding: 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%233A7DFF" fill-opacity="0.1"><circle cx="30" cy="30" r="4"/></g></g></svg>') repeat;
    opacity: 0.3;
}

.header h1 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header p {
    font-family: 'Inter', sans-serif;
    font-size: 1.2rem;
    opacity: 0.9;
    position: relative;
    z-index: 1;
    color: var(--gray-200);
}

.main-content {
    padding: 24px;
    background: var(--light-base);
    width: 100%;
    box-sizing: border-box;
    display: block;
    position: relative;
}

.main-content::after {
    content: "";
    display: block;
    clear: both;
    height: 0;
    visibility: hidden;
}

.step {
    background: var(--white);
    border: 2px solid var(--gray-100);
    border-radius: var(--border-radius);
    padding: 32px;
    margin: 40px auto;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: static;
    overflow: visible;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    clear: both;
    float: none;
    display: block;
    z-index: 1;
    contain: layout;
}

.masking-controls {
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
}

.masking-tools {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    flex-wrap: wrap;
    align-items: center;
}

.mask-color-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.mask-color-container label {
    font-weight: 600;
    color: #374151;
    font-size: 0.9rem;
    min-width: 80px;
}

.mask-color-select {
    padding: 10px 16px;
    border: 2px solid #d1d5db;
    border-radius: 8px;
    background: #ffffff;
    color: #374151;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 140px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.mask-color-select:hover {
    border-color: #3b7dff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.mask-color-select:focus {
    outline: none;
    border-color: #3b7dff;
    box-shadow: 0 0 0 3px rgba(59, 125, 255, 0.1), 0 2px 8px rgba(0, 0, 0, 0.15);
}

#maskCanvas {
    max-width: 100%;
    max-height: 100%;
    cursor: crosshair;
    display: block;
    border: 2px solid #3b7dff;
    border-radius: 8px;
}

#maskCanvas.erasing {
    cursor: pointer;
}

.mask-instructions {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: var(--white);
    padding: 8px 16px;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    z-index: 10;
}

.mask-instructions p {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

@media (max-width: 768px) {
    .brush-controls {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .mask-tools {
        flex-direction: column;
    }
    
    .mask-tool-btn {
        min-width: auto;
    }
}

.step::after {
    content: "";
    display: block;
    clear: both;
    height: 0;
    visibility: hidden;
}

.step::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
}

.step:hover::before {
    width: 8px;
}

.step.active {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.step-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    border-radius: 50%;
    font-weight: 700;
    font-size: 1.2rem;
    box-shadow: var(--shadow-md);
    font-family: 'Plus Jakarta Sans', sans-serif;
}

.step h3 {
    color: var(--dark-base);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
}

.step p {
    color: var(--gray-600);
    margin-bottom: 24px;
    line-height: 1.7;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    margin: 4px 8px 4px 0;
    position: relative;
    overflow: hidden;
    font-family: 'Inter', sans-serif;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

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

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
}

.btn-success {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    color: var(--white);
}

.btn-danger {
    background: linear-gradient(135deg, var(--error-color), #DC2626);
    color: var(--white);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
    border: 2px solid var(--gray-200);
}

.btn-secondary:hover {
    background: var(--gray-200);
    border-color: var(--gray-300);
}

.btn.active {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.canvas-container {
    position: relative;
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    overflow: hidden;
    max-height: 70vh;
    background: var(--gray-50);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 32px auto;
    clear: both;
    z-index: 1;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.canvas-container::after {
    content: "";
    display: table;
    clear: both;
}

#imageCanvas {
    max-width: 100%;
    max-height: 100%;
    cursor: crosshair;
    display: block;
}

.crop-overlay {
    position: absolute;
    border: 2px solid var(--primary-color);
    background: rgba(58, 125, 255, 0.1);
    pointer-events: none;
    display: none;
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.3);
    z-index: 10;
    top: 0;
    left: 0;
}

.crop-info {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: var(--white);
    padding: 8px 12px;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    white-space: nowrap;
    box-shadow: var(--shadow-md);
    font-family: 'Plus Jakarta Sans', sans-serif;
}

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    margin-bottom: 24px;
}

.crop-actions {
    margin-bottom: 24px;
}

.crop-mode-toggle {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.crop-mode-btn {
    flex: 1;
    max-width: 200px;
}

.quick-presets {
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    padding: 16px;
}

.preset-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.preset-row:last-child {
    margin-bottom: 0;
}

.preset-label {
    font-weight: 600;
    color: var(--gray-600);
    min-width: 60px;
    font-size: 0.9rem;
}

.preset-btn-mini {
    padding: 6px 12px;
    font-size: 0.8rem;
    background: var(--white);
    border: 2px solid var(--gray-300);
    border-radius: 6px;
    color: var(--gray-700);
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
}

.preset-btn-mini:hover {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.preset-btn-mini.active {
    background: var(--secondary-color);
    color: var(--white);
    border-color: var(--secondary-color);
}

.btn-link {
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    font-size: 0.8rem;
    text-decoration: underline;
    padding: 4px 8px;
}

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

.preset-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.preset-modal-content {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    max-width: 90vw;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-xl);
}

.preset-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--gray-200);
    padding-bottom: 16px;
}

.preset-modal-header h3 {
    margin: 0;
    color: var(--dark-base);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 700;
}

.btn-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--gray-500);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.btn-close:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

.preset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 24px;
}

.preset-category {
    background: var(--white);
    border: 2px solid var(--gray-100);
    border-radius: var(--border-radius);
    padding: 24px;
    transition: all 0.3s ease;
}

.preset-category:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.preset-category h4 {
    color: var(--dark-base);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 700;
    margin-bottom: 16px;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.preset-btn {
    display: block;
    width: 100%;
    text-align: left;
    background: var(--gray-50);
    color: var(--gray-700);
    margin-bottom: 8px;
    padding: 12px 16px;
    font-size: 0.9rem;
    border: 2px solid var(--gray-200);
    border-radius: 8px;
    transition: all 0.2s ease;
    font-weight: 500;
}

.preset-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
    transform: translateX(4px);
}

.preset-btn.active {
    background: var(--secondary-color);
    color: var(--white);
    border-color: var(--secondary-color);
}

.status {
    margin: 24px 0;
    padding: 16px 20px;
    border-radius: var(--border-radius);
    display: none;
    font-weight: 500;
    position: relative;
    border-left: 4px solid;
    clear: both;
    z-index: 10;
}

.status.success {
    background: #F0FDF9;
    color: #065F46;
    border-color: var(--secondary-color);
}

.status.error {
    background: #FEF2F2;
    color: #991B1B;
    border-color: var(--error-color);
}

.status.info {
    background: #EFF6FF;
    color: #1E40AF;
    border-color: var(--primary-color);
}

.preview-section {
    margin: 40px auto;
    padding: 32px;
    background: var(--white);
    border-radius: var(--border-radius);
    border: 2px solid var(--gray-100);
    display: none;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    clear: both;
    position: static;
    z-index: 1;
    overflow: visible;
    contain: layout;
}

.preview-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 32px;
    clear: both;
}

.preview-item {
    background: var(--gray-50);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid var(--gray-200);
}

.preview-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.preview-item.selected {
    border-color: var(--secondary-color);
    box-shadow: var(--shadow-lg);
    background: #F0FDF9;
}

.preview-image {
    max-width: 120px;
    max-height: 120px;
    border-radius: 8px;
    margin-bottom: 12px;
    box-shadow: var(--shadow-sm);
}

.effect-name {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--dark-base);
}

.effect-description {
    font-size: 0.8rem;
    color: var(--gray-500);
}

.rounded-corners-options {
    margin-top: 24px;
    padding: 24px;
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    background: var(--white);
}

.rounded-corners-options h4 {
    margin-bottom: 16px;
    color: var(--dark-base);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 700;
}

.slider-container {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 12px;
}

.slider {
    flex: 1;
    height: 8px;
    border-radius: 4px;
    background: var(--gray-200);
    outline: none;
    -webkit-appearance: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    box-shadow: var(--shadow-md);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-md);
}

.image-info {
    padding: 16px;
    background: linear-gradient(135deg, var(--gray-100), var(--gray-50));
    border-radius: var(--border-radius);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    margin-top: 16px;
    display: none;
    border: 2px solid var(--gray-200);
    color: var(--gray-700);
}

.mode-info {
    padding: 16px;
    background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    color: var(--primary-dark);
    margin-top: 16px;
    font-weight: 500;
}

.captured-summary {
    padding: 12px 16px;
    background: linear-gradient(135deg, #F0FDF9, #DCFCE7);
    border: 2px solid var(--secondary-color);
    border-radius: var(--border-radius);
    color: #059669;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.download-area {
    text-align: center;
    margin-top: 32px;
    padding: 32px;
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    border-radius: var(--border-radius);
    color: var(--white);
}

.download-area h3 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 700;
    margin-bottom: 16px;
}

#downloadLink {
    display: none;
    text-decoration: none;
    background: var(--white);
    color: var(--secondary-color);
    font-weight: 700;
    font-family: 'Plus Jakarta Sans', sans-serif;
}

#downloadLink:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
}

.checkbox-container {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.custom-checkbox {
    position: relative;
    display: inline-block;
    width: 24px;
    height: 24px;
}

.custom-checkbox input {
    opacity: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    position: absolute;
    z-index: 1;
}

.custom-checkbox::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 24px;
    height: 24px;
    border: 2px solid var(--gray-300);
    border-radius: 6px;
    background: var(--white);
    transition: all 0.2s ease;
}

.custom-checkbox input:checked + .custom-checkbox::before,
.custom-checkbox input:checked ~ .custom-checkbox::before,
.custom-checkbox:has(input:checked)::before {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.custom-checkbox::after {
    content: '✓';
    position: absolute;
    top: 1px;
    left: 0;
    width: 24px;
    height: 24px;
    color: var(--white);
    font-weight: bold;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s ease;
    pointer-events: none;
}

.custom-checkbox input:checked + .custom-checkbox::after,
.custom-checkbox input:checked ~ .custom-checkbox::after,
.custom-checkbox:has(input:checked)::after {
    opacity: 1;
}

.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@media (max-width: 768px) {
    body { padding: 10px; }
    .header { padding: 24px 20px; }
    .header h1 { font-size: 2.5rem; }
    .main-content { padding: 20px; }
    .step { padding: 20px; }
    .preset-grid { grid-template-columns: 1fr; }
    .controls { flex-direction: column; align-items: stretch; }
    .btn { justify-content: center; }
}

/* Effect styles */
.effect-none { /* No effects */ }
.effect-soft-shadow { box-shadow: 0 4px 20px rgba(0,0,0,0.15); }
.effect-hard-shadow { box-shadow: 8px 8px 0px rgba(0,0,0,0.2); }
.effect-glow { box-shadow: 0 0 20px rgba(58, 125, 255, 0.6); }
.effect-gradient-bg { background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%); padding: 20px; }
.effect-dark-bg { background: var(--dark-base); padding: 20px; }
.effect-minimal-border { border: 2px solid var(--gray-200); padding: 10px; background: white; }
.effect-retro { filter: sepia(30%) saturate(1.2) contrast(1.1); box-shadow: 0 0 0 8px var(--accent-color), 0 0 0 16px var(--error-color); }

#presetContainer.hidden { display: none; }

/* Accent highlights */
.accent-highlight {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    color: var(--white);
}

/* Footer Styles */
.app-footer {
    background: var(--dark-base);
    color: var(--gray-300);
    text-align: center;
    padding: 24px 20px;
    margin-top: 32px;
    width: 100%;
    border-radius: var(--border-radius-lg);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 1;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.app-footer p {
    margin: 0;
    font-size: 0.9rem;
}

.app-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

.app-footer a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}