/**
 * RAZ Watermark Studio - CSS Styling
 * Matches RAZ Creative Studio Theme
 */

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
    /* RAZ Brand Colors */
    --color-bg-dark: #0a0a0a;
    --color-bg-card: #141414;
    --color-bg-input: #1a1a1a;
    --color-gold: #d4a853;
    --color-gold-hover: #e6bc6a;
    --color-gold-dark: #b8923f;
    --color-text-light: #ffffff;
    --color-text-muted: #a1a1aa;
    --color-text-dim: #71717a;
    --color-border: #27272a;
    --color-success: #22c55e;
    --color-error: #ef4444;

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

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background: var(--color-bg-dark);
    color: var(--color-text-light);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* Header */
.header {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    background: linear-gradient(180deg, var(--color-bg-card), var(--color-bg-dark));
    border-bottom: 1px solid var(--color-border);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-gold);
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--color-gold-hover);
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-gold);
}

.header p {
    color: var(--color-text-muted);
    font-size: 1rem;
}

/* Main Layout */
.main-layout {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
}

@media (max-width: 1024px) {
    .main-layout {
        grid-template-columns: 1fr;
    }
}

/* Panel */
.panel {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    overflow: hidden;
}

.panel-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.panel-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
}

.panel-header .icon {
    font-size: 1.3rem;
}

.panel-body {
    padding: var(--spacing-lg);
    max-height: calc(100vh - 280px);
    overflow-y: auto;
}

/* Control Groups */
.control-group {
    margin-bottom: var(--spacing-lg);
}

.control-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-light);
    font-size: 0.9rem;
}

.control-group .hint {
    font-size: 0.75rem;
    color: var(--color-text-dim);
    margin-bottom: var(--spacing-sm);
}

/* Upload Areas */
.upload-box {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background: var(--color-bg-input);
}

.upload-box:hover,
.upload-box.dragover {
    border-color: var(--color-gold);
    background: rgba(212, 168, 83, 0.05);
}

.upload-box .upload-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    opacity: 0.7;
}

.upload-box p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.upload-box input[type="file"] {
    display: none;
}

/* Preview in upload */
.upload-preview {
    margin-top: var(--spacing-md);
    display: none;
}

.upload-preview.show {
    display: block;
}

.upload-preview img {
    max-width: 100%;
    max-height: 120px;
    border-radius: var(--radius-sm);
}

.upload-preview .filename {
    font-size: 0.75rem;
    color: var(--color-text-dim);
    margin-top: var(--spacing-xs);
}

/* Mode Toggle */
.mode-toggle {
    display: flex;
    gap: var(--spacing-sm);
}

.mode-btn {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
}

.mode-btn:hover {
    border-color: var(--color-text-muted);
}

.mode-btn.active {
    border-color: var(--color-gold);
    background: rgba(212, 168, 83, 0.1);
    color: var(--color-gold);
}

/* Text Input */
.text-input {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-light);
    font-family: inherit;
    font-size: 0.9rem;
}

.text-input:focus {
    outline: none;
    border-color: var(--color-gold);
}

/* Position Grid */
.position-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xs);
    background: var(--color-bg-input);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
}

.position-btn {
    aspect-ratio: 1;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    color: var(--color-text-dim);
}

.position-btn:hover {
    border-color: var(--color-text-muted);
}

.position-btn.active {
    border-color: var(--color-gold);
    background: var(--color-gold);
    color: var(--color-bg-dark);
}

/* Sliders */
.slider-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.slider {
    flex: 1;
    -webkit-appearance: none;
    height: 6px;
    background: var(--color-bg-input);
    border-radius: 3px;
    outline: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-gold);
    cursor: pointer;
    transition: transform 0.2s;
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.slider-value {
    min-width: 50px;
    text-align: right;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-gold);
}

/* Checkbox */
.checkbox-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.checkbox-row input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-gold);
}

.checkbox-row span {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* Color Picker */
.color-picker-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.color-picker {
    width: 50px;
    height: 35px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    background: transparent;
}

.color-picker::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-picker::-webkit-color-swatch {
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
}

/* Process Button */
.process-btn {
    width: 100%;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
    color: var(--color-bg-dark);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.process-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(212, 168, 83, 0.3);
}

.process-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Preview Panel */
.preview-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    background: var(--color-bg-input);
    border-radius: var(--radius-md);
    position: relative;
}

.preview-placeholder {
    text-align: center;
    color: var(--color-text-dim);
}

.preview-placeholder .icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.preview-image {
    max-width: 100%;
    max-height: 500px;
    border-radius: var(--radius-sm);
    display: none;
}

.preview-image.show {
    display: block;
}

/* Download Button */
.download-section {
    margin-top: var(--spacing-lg);
    display: none;
}

.download-section.show {
    display: block;
}

.download-btn {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-success);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all 0.2s;
}

.download-btn:hover {
    background: #16a34a;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: var(--spacing-lg);
    z-index: 1000;
}

.loading-overlay.show {
    display: flex;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--color-bg-card);
    border-top-color: var(--color-gold);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-text {
    color: var(--color-text-light);
    font-size: 1rem;
}

/* Message Box */
.message-box {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 500;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s;
    z-index: 1001;
}

.message-box.show {
    transform: translateY(0);
    opacity: 1;
}

.message-box.success {
    background: var(--color-success);
    color: white;
}

.message-box.error {
    background: var(--color-error);
    color: white;
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-text-dim);
    font-size: 0.85rem;
    border-top: 1px solid var(--color-border);
}

.footer a {
    color: var(--color-gold);
    text-decoration: none;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-input);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 3px;
}