/* ===== CSS Variables ===== */
:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --bg-tertiary: #1a1a1a;
    --bg-glass: rgba(20, 20, 20, 0.85);
    --bg-glass-light: rgba(255, 255, 255, 0.05);
    
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.4);
    
    --accent: #ff6b6b;
    --accent-soft: rgba(255, 107, 107, 0.2);
    --success: #4ecdc4;
    --warning: #ffe66d;
    --danger: #ff6b6b;
    
    --border-color: rgba(255, 255, 255, 0.1);
    --border-focus: rgba(255, 255, 255, 0.3);
    
    --shadow-soft: 0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-strong: 0 8px 32px rgba(0, 0, 0, 0.6);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 50%;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
    
    --safe-area-inset-bottom: env(safe-area-inset-bottom, 0px);
    --safe-area-inset-top: env(safe-area-inset-top, 0px);
}

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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
}

/* ===== Video Container ===== */
#video-container {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    overflow: hidden;
}

#camera-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scaleX(-1);
    transition: filter var(--transition-fast);
}

#camera-video.no-mirror {
    transform: scaleX(1);
}

#filter-canvas {
    display: none;
}

/* ===== Grid Overlay ===== */
#grid-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 5;
}

#grid-overlay.hidden {
    display: none;
}

.grid-line {
    position: absolute;
    background: rgba(255, 255, 255, 0.25);
}

.grid-line.vertical {
    width: 1px;
    height: 100%;
    top: 0;
}

.grid-line.vertical.v1 { left: 33.333%; }
.grid-line.vertical.v2 { left: 66.666%; }

.grid-line.horizontal {
    width: 100%;
    height: 1px;
    left: 0;
}

.grid-line.horizontal.h1 { top: 33.333%; }
.grid-line.horizontal.h2 { top: 66.666%; }

/* ===== Timer Countdown ===== */
#timer-countdown {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    z-index: 100;
}

#timer-countdown.hidden {
    display: none;
}

#timer-number {
    font-size: clamp(80px, 20vw, 200px);
    font-weight: 200;
    color: white;
    text-shadow: 0 0 40px rgba(255, 255, 255, 0.5);
    animation: pulse-countdown 1s ease-in-out infinite;
}

@keyframes pulse-countdown {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

/* ===== Permission Screen ===== */
.screen {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    z-index: 200;
    padding: 24px;
}

.screen.active {
    display: flex;
}

.permission-content {
    text-align: center;
    max-width: 400px;
    animation: fadeInUp 0.5s ease;
}

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

.mirror-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 24px;
    color: var(--text-secondary);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.permission-content h1 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.tagline {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 1.1rem;
}

.status-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 24px;
}

#status-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 32px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    min-height: 56px;
}

.btn-primary:hover {
    background: #ff5252;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 107, 107, 0.3);
}

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

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-icon {
    width: 24px;
    height: 24px;
}

/* Browser Help */
.browser-help {
    margin-top: 24px;
    padding: 20px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    text-align: left;
}

.browser-help.hidden {
    display: none;
}

.browser-help h4 {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    color: var(--warning);
    font-size: 0.95rem;
}

.browser-help ol {
    padding-left: 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.browser-help li {
    margin-bottom: 8px;
}

.browser-help code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'SF Mono', Consolas, monospace;
    font-size: 0.85em;
}

/* Warning Box */
.warning-box {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-top: 24px;
    padding: 16px;
    background: rgba(255, 230, 109, 0.1);
    border: 1px solid rgba(255, 230, 109, 0.3);
    border-radius: var(--radius-md);
    text-align: left;
}

.warning-box.hidden {
    display: none;
}

.warning-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: var(--warning);
}

.warning-box p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ===== Controls Overlay ===== */
#controls-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 50;
    opacity: 1;
    transition: opacity var(--transition-normal);
}

#controls-overlay.hidden {
    display: none;
}

#controls-overlay.faded {
    opacity: 0;
}

#controls-overlay > * {
    pointer-events: auto;
}

/* Top Bar */
.top-bar {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: calc(16px + var(--safe-area-inset-top)) 16px 16px;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.6), transparent);
}

.top-center {
    display: flex;
    gap: 8px;
}

.icon-btn {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.icon-btn:hover {
    background: var(--bg-glass-light);
    border-color: var(--border-focus);
}

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

.icon-btn.active {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--accent);
}

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

.pill-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

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

.pill-btn.active {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--accent);
}

/* Side Actions */
.side-actions {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.side-actions.side-right {
    right: 16px;
}

.side-actions.side-left {
    left: 16px;
}

/* Bottom Bar */
.bottom-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px 16px calc(20px + var(--safe-area-inset-bottom));
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
}

/* Presets Row */
.presets-row {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 20px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: 4px;
}

.presets-row::-webkit-scrollbar {
    display: none;
}

.preset-btn {
    padding: 8px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

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

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

/* Main Actions */
.main-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
}

.action-btn {
    position: relative;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.action-btn:hover {
    background: var(--bg-glass-light);
    transform: scale(1.05);
}

.action-btn svg {
    width: 24px;
    height: 24px;
}

.photo-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    background: var(--accent);
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

.photo-badge.hidden {
    display: none;
}

/* Capture Button */
.capture-wrapper {
    position: relative;
}

.capture-btn {
    width: 80px;
    height: 80px;
    background: transparent;
    border: 4px solid var(--text-primary);
    border-radius: var(--radius-full);
    cursor: pointer;
    padding: 6px;
    transition: all var(--transition-fast);
}

.capture-btn:hover {
    transform: scale(1.05);
}

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

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

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

.timer-select {
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 10px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.timer-select:hover {
    background: var(--bg-glass-light);
    color: var(--text-primary);
}

.timer-select.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* ===== Filters Panel ===== */
#filters-panel {
    position: absolute;
    bottom: 140px;
    left: 16px;
    right: 16px;
    max-width: 400px;
    margin: 0 auto;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    animation: slideUp 0.3s ease;
}

#filters-panel.hidden {
    display: none;
}

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

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.panel-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.text-btn {
    background: none;
    border: none;
    color: var(--accent);
    font-size: 0.9rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.text-btn:hover {
    background: var(--accent-soft);
}

.sliders-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.slider-group label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.slider-group label span:last-child {
    color: var(--text-primary);
    font-weight: 500;
    min-width: 50px;
    text-align: right;
}

/* Custom Range Slider */
input[type="range"] {
    width: 100%;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--text-primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: transform var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--text-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* ===== Modals ===== */
.modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 300;
    padding: 24px;
}

.modal.hidden {
    display: none;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 500px;
    max-height: 85vh;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
}

.close-modal-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.close-modal-btn:hover {
    background: var(--bg-glass-light);
    color: var(--text-primary);
}

.close-modal-btn svg {
    width: 24px;
    height: 24px;
}

/* Gallery Modal */
.gallery-content {
    max-width: 600px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
    padding: 20px;
    max-height: 60vh;
    overflow-y: auto;
}

.gallery-grid .empty-gallery {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--text-muted);
    padding: 40px 20px;
}

.gallery-thumb {
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.gallery-thumb:hover {
    transform: scale(1.05);
}

.gallery-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Photo Preview Modal */
.photo-content {
    max-width: 90vw;
    max-height: 90vh;
    background: transparent;
    border: none;
}

.photo-content .close-modal-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--bg-glass);
    z-index: 10;
}

#preview-image {
    width: 100%;
    max-height: 70vh;
    object-fit: contain;
    border-radius: var(--radius-md);
}

.photo-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
    padding: 20px;
    flex-wrap: wrap;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-secondary:hover {
    background: var(--bg-glass-light);
}

.btn-secondary svg,
.btn-primary svg,
.btn-danger svg {
    width: 20px;
    height: 20px;
}

.btn-danger {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: rgba(255, 107, 107, 0.2);
    border: 1px solid var(--danger);
    border-radius: var(--radius-md);
    color: var(--danger);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

/* Info Modal */
.info-content {
    max-width: 520px;
}

.info-body {
    padding: 24px;
    max-height: 60vh;
    overflow-y: auto;
}

.info-body section {
    margin-bottom: 24px;
}

.info-body section:last-child {
    margin-bottom: 0;
}

.info-body h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.info-body p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 8px;
}

.info-body ul {
    padding-left: 20px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.info-body li {
    margin-bottom: 6px;
}

.info-body a {
    color: var(--accent);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.info-body a:hover {
    opacity: 0.8;
}

.impressum {
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

/* Share Modal */
.share-content {
    max-width: 400px;
}

.share-options {
    padding: 20px;
}

.share-option {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: 12px;
}

.share-option:hover {
    background: var(--bg-glass-light);
    border-color: var(--border-focus);
}

.share-option svg {
    width: 24px;
    height: 24px;
    color: var(--text-secondary);
}

.share-note {
    margin-top: 16px;
    padding: 12px;
    background: rgba(78, 205, 196, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-align: center;
}

/* ===== Toast Notifications ===== */
#toast-container {
    position: fixed;
    bottom: calc(180px + var(--safe-area-inset-bottom));
    left: 50%;
    transform: translateX(-50%);
    z-index: 400;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
}

.toast {
    padding: 12px 20px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem;
    white-space: nowrap;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
    pointer-events: auto;
}

.toast.success {
    border-color: var(--success);
    background: rgba(78, 205, 196, 0.2);
}

.toast.error {
    border-color: var(--danger);
    background: rgba(255, 107, 107, 0.2);
}

@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);
    }
}

/* ===== Flash Effect ===== */
#flash-effect {
    position: fixed;
    inset: 0;
    background: white;
    opacity: 0;
    pointer-events: none;
    z-index: 150;
}

#flash-effect.flash {
    animation: flashAnimation 0.3s ease-out;
}

@keyframes flashAnimation {
    0% { opacity: 0.8; }
    100% { opacity: 0; }
}

/* ===== Utility Classes ===== */
.hidden {
    display: none !important;
}

/* ===== Desktop Specific ===== */
@media (min-width: 768px) {
    .side-actions.side-right {
        right: 24px;
    }
    
    .side-actions.side-left {
        left: 24px;
    }
    
    .bottom-bar {
        padding: 24px 32px calc(32px + var(--safe-area-inset-bottom));
    }
    
    .top-bar {
        padding: calc(24px + var(--safe-area-inset-top)) 24px 24px;
    }
    
    #filters-panel {
        bottom: 160px;
        left: 50%;
        right: auto;
        transform: translateX(-50%);
    }
}

@media (max-width: 767px) {
    .desktop-only {
        display: none !important;
    }
}

/* ===== Landscape Mobile ===== */
@media (max-height: 500px) and (orientation: landscape) {
    .bottom-bar {
        padding: 12px 16px;
    }
    
    .presets-row {
        margin-bottom: 12px;
    }
    
    .capture-btn {
        width: 60px;
        height: 60px;
    }
    
    .main-actions {
        gap: 16px;
    }
    
    .action-btn {
        width: 48px;
        height: 48px;
    }
    
    #filters-panel {
        bottom: 100px;
    }
    
    .side-actions.side-left {
        top: auto;
        bottom: 120px;
        transform: none;
    }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}