/* ============================================
   RealPic Lite - Modern Minimal Styles
   ============================================ */

/* CSS Variables / Design Tokens */
:root {
    /* Colors */
    --color-bg-primary: #0a0a0b;
    --color-bg-secondary: #141416;
    --color-bg-tertiary: #1c1c1f;
    --color-bg-elevated: #232326;

    --color-surface: rgba(255, 255, 255, 0.03);
    --color-surface-hover: rgba(255, 255, 255, 0.06);
    --color-surface-active: rgba(255, 255, 255, 0.08);

    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-strong: rgba(255, 255, 255, 0.15);

    --color-text-primary: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-text-tertiary: rgba(255, 255, 255, 0.4);

    --color-accent: #6366f1;
    --color-accent-hover: #818cf8;
    --color-accent-glow: rgba(99, 102, 241, 0.3);

    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.15);

    --color-danger: #ef4444;
    --color-danger-bg: rgba(239, 68, 68, 0.15);

    --color-warning: #f59e0b;

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

    /* 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: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--color-accent-glow);

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

    /* Z-index layers */
    --z-base: 1;
    --z-overlay: 100;
    --z-modal: 200;
    --z-toast: 300;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 100%;
}

/* ============================================
   Header
   ============================================ */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: var(--z-overlay);
    backdrop-filter: blur(12px);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    width: 28px;
    height: 28px;
    color: var(--color-accent);
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 600;
    letter-spacing: -0.02em;
}

.logo-lite {
    color: var(--color-text-tertiary);
    font-weight: 400;
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* Camera Section */
.camera-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
}

.camera-container {
    flex: 1;
    position: relative;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--color-border);
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#cameraFeed {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    background: var(--color-bg-primary);
}

.hidden {
    display: none !important;
}

/* Camera Status */
.camera-status {
    position: absolute;
    top: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    transition: opacity var(--transition-base);
    z-index: 10;
}

.camera-status.hidden {
    opacity: 0;
    pointer-events: none;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-warning);
    animation: pulse 1.5s ease-in-out infinite;
}

.camera-status.ready .status-dot {
    background: var(--color-success);
    animation: none;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.4;
    }
}

/* Mode Toggle */
.mode-toggle {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
}

.mode-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-tertiary);
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.mode-btn svg {
    width: 18px;
    height: 18px;
}

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

.mode-btn.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

/* Recording Indicator */
.recording-indicator {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(239, 68, 68, 0.9);
    border-radius: var(--radius-full);
    color: white;
    font-size: var(--font-size-sm);
    font-weight: 600;
    z-index: 20;
    animation: fadeIn var(--transition-fast);
}

.recording-dot {
    width: 10px;
    height: 10px;
    background: white;
    border-radius: 50%;
    animation: recordingPulse 1s ease-in-out infinite;
}

@keyframes recordingPulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.5;
        transform: scale(0.8);
    }
}

/* Camera Controls */
.camera-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    padding: var(--spacing-md);
}

.control-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--radius-lg);
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.control-btn svg {
    width: 22px;
    height: 22px;
}

.control-btn.secondary {
    width: 52px;
    height: 52px;
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.control-btn.secondary:hover {
    background: var(--color-surface-hover);
    color: var(--color-text-primary);
    border-color: var(--color-border-strong);
    transform: scale(1.05);
}

.control-btn.primary {
    background: var(--color-accent);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
}

.control-btn.primary:hover {
    background: var(--color-accent-hover);
    box-shadow: var(--shadow-glow);
    transform: scale(1.02);
}

.control-btn.danger {
    background: var(--color-danger-bg);
    color: var(--color-danger);
    padding: var(--spacing-md) var(--spacing-lg);
}

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

/* Capture Button */
.capture-btn {
    width: 72px;
    height: 72px;
    background: transparent;
    border: 3px solid var(--color-text-primary);
    border-radius: 50%;
    padding: 4px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.capture-btn:hover {
    border-color: var(--color-accent);
    transform: scale(1.05);
}

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

.capture-btn.video-mode {
    border-color: var(--color-danger);
}

.capture-btn.video-mode:hover {
    border-color: var(--color-danger);
}

.capture-btn-inner {
    width: 100%;
    height: 100%;
    background: var(--color-text-primary);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.capture-btn:hover .capture-btn-inner {
    background: var(--color-accent);
}

.capture-btn.video-mode:hover .capture-btn-inner {
    background: var(--color-danger);
}

.capture-btn:active .capture-btn-inner {
    transform: scale(0.9);
}

.capture-btn-inner.recording {
    animation: recordingPulse 1s ease-in-out infinite;
    background: var(--color-danger) !important;
}

/* Capture Flash Effect */
@keyframes captureFlash {
    0% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
    }

    100% {
        opacity: 1;
    }
}

.capture-flash {
    animation: captureFlash 0.2s ease;
}

/* ============================================
   Preview Section
   ============================================ */
.preview-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-xl);
}

.preview-container {
    flex: 1;
    position: relative;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--color-border);
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#previewCanvas {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

#previewImage {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    display: block;
    -webkit-touch-callout: default;
    -webkit-user-select: auto;
    user-select: auto;
}

#videoPreview {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    display: block;
    border-radius: var(--radius-md);
}

.watermark-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-success-bg);
    border: 1px solid var(--color-success);
    border-radius: var(--radius-full);
    color: var(--color-success);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.watermark-badge svg {
    width: 14px;
    height: 14px;
}

.preview-controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

/* ============================================
   Modals
   ============================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    z-index: var(--z-modal);
    animation: fadeIn var(--transition-fast);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: slideUp var(--transition-base);
}

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

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

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.close-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--color-text-tertiary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

.close-btn svg {
    width: 20px;
    height: 20px;
}

.modal-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

/* ============================================
   Settings Groups
   ============================================ */
.settings-group {
    margin-bottom: var(--spacing-xl);
}

.settings-group:last-child {
    margin-bottom: 0;
}

.settings-group h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

.settings-group h3 .settings-icon {
    width: 1em;
    height: 1em;
    flex-shrink: 0;
}

.settings-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

.setting-item {
    margin-bottom: var(--spacing-md);
}

.setting-item:last-child {
    margin-bottom: 0;
}

.setting-item input[type="text"] {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: inherit;
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}

.setting-item input[type="text"]:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.setting-item input[type="text"]::placeholder {
    color: var(--color-text-tertiary);
}

/* Toggle Switch */
.toggle-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.toggle-item>label:first-child {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.toggle {
    position: relative;
    width: 48px;
    height: 26px;
    cursor: pointer;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    inset: 0;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    height: 20px;
    width: 20px;
    left: 2px;
    bottom: 2px;
    background: var(--color-text-tertiary);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.toggle input:checked+.toggle-slider {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.toggle input:checked+.toggle-slider::before {
    background: white;
    transform: translateX(22px);
}

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

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

.btn-primary:hover {
    background: var(--color-accent-hover);
    box-shadow: var(--shadow-glow);
}

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

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

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

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

.btn-primary svg,
.btn-secondary svg,
.btn-danger svg {
    width: 16px;
    height: 16px;
}

/* ============================================
   Toast Notifications
   ============================================ */
.toast-container {
    position: fixed;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: toastIn 0.25s ease;
    pointer-events: auto;
}

.toast svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.toast.success {
    border-color: var(--color-success);
}

.toast.success svg {
    color: var(--color-success);
}

.toast.error {
    border-color: var(--color-danger);
}

.toast.error svg {
    color: var(--color-danger);
}

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

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

@keyframes toastOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }

    to {
        opacity: 0;
        transform: translateY(-10px);
    }
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 480px) {
    .app-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .camera-section,
    .preview-section {
        padding: var(--spacing-md);
    }

    .camera-controls {
        gap: var(--spacing-lg);
    }

    .capture-btn {
        width: 64px;
        height: 64px;
    }

    .control-btn.secondary {
        width: 44px;
        height: 44px;
    }

    .modal {
        max-height: 95vh;
        margin: var(--spacing-sm);
    }

    .mode-toggle {
        padding: var(--spacing-xs) 0;
    }

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

    .mode-btn svg {
        width: 16px;
        height: 16px;
    }
}