/* =====================================================
   VIRTUAL NAIL SALON - PROFESSIONAL PRODUCTION STYLES
   ===================================================== */

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

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
    /* Color Palette */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --dark-bg: #0a0a0f;
    --card-bg: rgba(255, 255, 255, 0.05);
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.15);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --accent-pink: #f5576c;
    --accent-purple: #764ba2;
    --accent-blue: #4facfe;
    --success: #00d9a5;
    --danger: #ff6b6b;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    /* Shadows */
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 25px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 15px 50px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(102, 126, 234, 0.3);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(245, 87, 108, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(118, 75, 162, 0.08) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

/* ===== LAYOUT ===== */
.app-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===== HEADER ===== */
.app-header {
    text-align: center;
    padding: var(--spacing-lg) 0;
    animation: fadeInDown 0.6s ease-out;
}

.app-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.logo-icon {
    font-size: 2.5rem;
    animation: pulse 2s infinite;
}

.app-title {
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.app-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 300;
}

/* ===== MAIN CONTENT ===== */
.main-content {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: var(--spacing-lg);
    flex: 1;
    align-items: start;
}

/* ===== VIDEO SECTION ===== */
.video-section {
    animation: fadeInLeft 0.6s ease-out;
}

.video-container {
    position: relative;
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.video-frame {
    position: relative;
    aspect-ratio: 4/3;
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-frame::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 70%, rgba(0, 0, 0, 0.5) 100%);
    pointer-events: none;
    z-index: 1;
}

.video-feed {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-status {
    position: absolute;
    bottom: var(--spacing-md);
    left: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    font-size: 0.85rem;
    color: var(--text-secondary);
    z-index: 2;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--danger);
    transition: var(--transition-normal);
}

.status-dot.active {
    background: var(--success);
    box-shadow: 0 0 10px var(--success);
    animation: blink 1.5s infinite;
}

/* ===== CONTROL PANEL ===== */
.control-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    animation: fadeInRight 0.6s ease-out;
    max-height: 85vh;
    overflow-y: auto;
}

/* Custom Scrollbar */
.control-panel::-webkit-scrollbar {
    width: 6px;
}

.control-panel::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

.control-panel::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: 3px;
}

.control-panel::-webkit-scrollbar-thumb:hover {
    background: var(--accent-purple);
}

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

.panel-icon {
    font-size: 1.5rem;
}

.panel-title {
    font-size: 1.2rem;
    font-weight: 600;
}

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

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

.control-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.control-value {
    color: var(--accent-blue);
    font-weight: 600;
}

/* ===== POWER BUTTONS ===== */
.power-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 50%);
    opacity: 0;
    transition: var(--transition-fast);
}

.btn:hover::before {
    opacity: 1;
}

.btn:active {
    transform: scale(0.97);
}

.btn-start {
    background: var(--accent-gradient);
    color: var(--dark-bg);
    box-shadow: 0 4px 15px rgba(79, 172, 254, 0.4);
}

.btn-start:hover {
    box-shadow: 0 6px 25px rgba(79, 172, 254, 0.5);
    transform: translateY(-2px);
}

.btn-stop {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a5a 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
}

.btn-stop:hover {
    box-shadow: 0 6px 25px rgba(255, 107, 107, 0.5);
    transform: translateY(-2px);
}

/* ===== COLOR PICKER ===== */
.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.color-input {
    -webkit-appearance: none;
    appearance: none;
    width: 60px;
    height: 60px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

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

.color-input::-webkit-color-swatch {
    border: none;
    border-radius: var(--radius-md);
}

.color-input:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

/* Color Presets */
.color-presets {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    flex: 1;
}

.color-preset {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.color-preset:hover {
    transform: scale(1.15);
    border-color: white;
}

.color-preset.active {
    border-color: white;
    box-shadow: 0 0 15px currentColor;
}

/* ===== SLIDERS ===== */
.slider-container {
    position: relative;
}

.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    cursor: pointer;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--primary-gradient);
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(102, 126, 234, 0.5);
    transition: var(--transition-fast);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.7);
}

.slider::-moz-range-thumb {
    width: 22px;
    height: 22px;
    border: none;
    border-radius: 50%;
    background: var(--primary-gradient);
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(102, 126, 234, 0.5);
}

/* ===== FILE UPLOAD ===== */
.upload-zone {
    position: relative;
    border: 2px dashed var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-normal);
    background: rgba(255, 255, 255, 0.02);
}

.upload-zone:hover {
    border-color: var(--accent-purple);
    background: rgba(118, 75, 162, 0.1);
}

.upload-zone.dragover {
    border-color: var(--accent-blue);
    background: rgba(79, 172, 254, 0.1);
}

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

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

.upload-text span {
    color: var(--accent-purple);
    font-weight: 500;
}

.upload-input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.upload-preview {
    display: none;
    margin-top: var(--spacing-sm);
}

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

.preview-image {
    max-width: 100%;
    max-height: 80px;
    border-radius: var(--radius-sm);
    object-fit: cover;
}

/* ===== DIVIDER ===== */
.divider {
    height: 1px;
    background: var(--glass-border);
    margin: var(--spacing-md) 0;
}

/* ===== FOOTER ===== */
.app-footer {
    text-align: center;
    padding: var(--spacing-lg) 0;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }

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

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }

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

@keyframes pulse {

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

    50% {
        transform: scale(1.1);
    }
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* ===== RESPONSIVE DESIGN ===== */

/* Tablet */
@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .control-panel {
        max-width: 100%;
    }
}

/* Mobile */
@media (max-width: 640px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
    }

    .app-container {
        padding: var(--spacing-sm);
    }

    .app-header {
        padding: var(--spacing-md) 0;
    }

    .logo-icon {
        font-size: 2rem;
    }

    .app-title {
        font-size: 1.5rem;
    }

    .video-container {
        border-radius: var(--radius-lg);
    }

    .control-panel {
        padding: var(--spacing-md);
        border-radius: var(--radius-lg);
    }

    .power-buttons {
        grid-template-columns: 1fr;
    }

    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .color-picker-wrapper {
        flex-wrap: wrap;
    }

    .color-input {
        width: 50px;
        height: 50px;
    }

    .color-preset {
        width: 32px;
        height: 32px;
    }
}

/* Extra Small Devices */
@media (max-width: 380px) {
    .app-title {
        font-size: 1.3rem;
    }

    .panel-title {
        font-size: 1rem;
    }

    .color-preset {
        width: 28px;
        height: 28px;
    }
}