/* CSS Variables */
:root {
    /* Colors - Dark Theme */
    --color-bg-primary: #0f0f11;
    --color-bg-secondary: #1a1a1f;
    --color-bg-tertiary: #25252c;
    --color-bg-card: #1e1e24;
    --color-bg-input: #2a2a32;
    --color-bg-hover: #32323d;
    
    /* Text Colors */
    --color-text-primary: #f5f5f7;
    --color-text-secondary: #a0a0b0;
    --color-text-muted: #6b6b7b;
    --color-text-placeholder: #4a4a5a;
    
    /* Border Colors */
    --color-border: #2e2e3a;
    --color-border-hover: #3e3e4e;
    --color-border-focus: #5e5e7e;
    
    /* Status Colors */
    --color-status-queued-bg: #2a2a32;
    --color-status-queued-text: #9ca3af;
    --color-status-detecting-bg: rgba(59, 130, 246, 0.15);
    --color-status-detecting-text: #60a5fa;
    --color-status-reading-bg: rgba(234, 179, 8, 0.15);
    --color-status-reading-text: #facc15;
    --color-status-completed-bg: rgba(34, 197, 94, 0.15);
    --color-status-completed-text: #4ade80;
    --color-status-error-bg: rgba(239, 68, 68, 0.15);
    --color-status-error-text: #f87171;
    
    /* Progress Bar Colors */
    --color-progress-bg: #2a2a32;
    --color-progress-fill-detecting: #3b82f6;
    --color-progress-fill-reading: #eab308;
    
    /* Button Colors */
    --color-btn-primary-bg: #3b82f6;
    --color-btn-primary-hover: #2563eb;
    --color-btn-primary-text: #ffffff;
    --color-btn-secondary-bg: #2a2a32;
    --color-btn-secondary-hover: #3a3a45;
    --color-btn-secondary-text: #f5f5f7;
    --color-btn-danger-bg: rgba(239, 68, 68, 0.15);
    --color-btn-danger-hover: rgba(239, 68, 68, 0.25);
    --color-btn-danger-text: #f87171;
    
    /* Shadow */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Spacing */
    --spacing-1: 4px;
    --spacing-2: 8px;
    --spacing-3: 12px;
    --spacing-4: 16px;
    --spacing-5: 20px;
    --spacing-6: 24px;
    --spacing-8: 32px;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

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

html {
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    min-height: 100vh;
}

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(15, 15, 17, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.header-content {
    max-width: 1600px;
    margin: 0 auto;
    padding: var(--spacing-4) var(--spacing-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Main Content */
.main-content {
    max-width: 1600px;
    margin: 0 auto;
    padding: var(--spacing-6);
}

/* Drop Zone */
.drop-zone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    background-color: var(--color-bg-secondary);
    margin-bottom: var(--spacing-6);
}

.drop-zone:hover {
    border-color: var(--color-border-hover);
    background-color: var(--color-bg-tertiary);
}

.drop-zone.drag-over {
    border-color: var(--color-btn-primary-bg);
    background-color: rgba(59, 130, 246, 0.1);
}

.drop-zone-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-4);
    color: var(--color-text-secondary);
}

.drop-zone-icon svg {
    width: 100%;
    height: 100%;
}

.drop-zone-text {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-2);
}

.drop-zone-subtext {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

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

.btn-secondary {
    background-color: var(--color-btn-secondary-bg);
    color: var(--color-btn-secondary-text);
}

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

.btn-danger {
    background-color: var(--color-btn-danger-bg);
    color: var(--color-btn-danger-text);
}

.btn-danger:hover {
    background-color: var(--color-btn-danger-hover);
}

.btn-sm {
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    background-color: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.btn-icon svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-base);
}

.btn-icon.expanded svg {
    transform: rotate(180deg);
}

/* Cards Grid */
.cards-grid {
    display: grid;
    gap: var(--spacing-5);
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .cards-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1400px) {
    .cards-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Card */
.card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

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

/* Card Header */
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-3) var(--spacing-4);
    background-color: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
}

.status-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: currentColor;
}

.status-queued {
    background-color: var(--color-status-queued-bg);
    color: var(--color-status-queued-text);
}

.status-detecting {
    background-color: var(--color-status-detecting-bg);
    color: var(--color-status-detecting-text);
}

.status-reading {
    background-color: var(--color-status-reading-bg);
    color: var(--color-status-reading-text);
}

.status-completed {
    background-color: var(--color-status-completed-bg);
    color: var(--color-status-completed-text);
}

.status-error {
    background-color: var(--color-status-error-bg);
    color: var(--color-status-error-text);
}

/* Progress Bar */
.progress-bar-container {
    padding: var(--spacing-2) var(--spacing-4);
    background-color: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
}

.progress-bar {
    width: 100%;
    height: 4px;
    background-color: var(--color-progress-bg);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    border-radius: var(--radius-sm);
    transition: width var(--transition-slow);
}

.card[data-status="detecting"] .progress-bar-fill {
    background-color: var(--color-progress-fill-detecting);
}

.card[data-status="reading"] .progress-bar-fill {
    background-color: var(--color-progress-fill-reading);
}

.progress-bar-animated {
    animation: progress-indeterminate 1.5s ease-in-out infinite;
}

@keyframes progress-indeterminate {
    0% {
        width: 0%;
        margin-left: 0%;
    }
    50% {
        width: 40%;
        margin-left: 30%;
    }
    100% {
        width: 0%;
        margin-left: 100%;
    }
}

/* Card Body */
.card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    padding: var(--spacing-4);
}

/* Image Preview */
.image-preview {
    position: relative;
    aspect-ratio: 16 / 10;
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.image-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.error-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    background-color: rgba(0, 0, 0, 0.7);
    color: var(--color-status-error-text);
}

.error-overlay svg {
    width: 32px;
    height: 32px;
}

.error-overlay span {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* Card Form */
.card-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    transition: all var(--transition-base);
}

.card-form.collapsed {
    display: none;
}

/* Form Elements */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
}

.form-group label {
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group input,
.form-group textarea {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
    font-family: inherit;
    color: var(--color-text-primary);
    background-color: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    outline: none;
    transition: all var(--transition-fast);
    resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-placeholder);
}

.form-group input:hover,
.form-group textarea:hover {
    border-color: var(--color-border-hover);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

/* Card Footer */
.card-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-4);
    background-color: var(--color-bg-tertiary);
    border-top: 1px solid var(--color-border);
}

/* Utility Classes */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

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

::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-border-hover);
}

/* Business Card Mockup */
.business-card-mockup {
    padding: var(--spacing-4);
    background: linear-gradient(135deg, #ffffff 0%, #f5f5f5 100%);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    color: #1a1a1a;
    transition: all var(--transition-base);
}

.business-card-mockup.collapsed {
    display: none;
}

.mockup-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.mockup-field {
    cursor: pointer;
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    min-height: 1.5em;
}

.mockup-field:hover {
    background-color: rgba(59, 130, 246, 0.1);
}

.mockup-field:empty::before {
    content: attr(data-placeholder);
    color: #999;
    font-style: italic;
}

.mockup-name {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: #1a1a1a;
}

.mockup-title {
    font-size: var(--font-size-sm);
    color: #555;
    font-weight: 500;
}

.mockup-company {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: #3b82f6;
    margin-bottom: var(--spacing-2);
}

.mockup-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, #ccc, transparent);
    margin: var(--spacing-1) 0;
}

.mockup-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.mockup-email,
.mockup-phone,
.mockup-website {
    font-size: var(--font-size-xs);
    color: #555;
}

.mockup-address {
    font-size: var(--font-size-xs);
    color: #666;
    line-height: 1.4;
}

.mockup-notes {
    font-size: var(--font-size-xs);
    color: #888;
    font-style: italic;
    margin-top: var(--spacing-2);
    padding-top: var(--spacing-2);
    border-top: 1px dashed #ddd;
}

.mockup-input {
    width: 100%;
    padding: var(--spacing-1) var(--spacing-2);
    font-size: inherit;
    font-family: inherit;
    color: inherit;
    background: white;
    border: 2px solid #3b82f6;
    border-radius: var(--radius-sm);
    outline: none;
}

.mockup-input:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

textarea.mockup-input {
    min-height: 60px;
    resize: vertical;
}