/* ===== CSS Variables ===== */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a24;
    --glass-bg: rgba(26, 26, 36, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.4);
    
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
    
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Background gradient */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* ===== Header ===== */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    padding: var(--spacing-md) var(--spacing-lg);
}

.header-content {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.site-name {
    font-size: 1.25rem;
    font-weight: 600;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.connection-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.75rem;
    color: var(--text-muted);
}

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

.status-dot.connected {
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
}

.status-dot.disconnected {
    background: var(--error);
    box-shadow: 0 0 8px var(--error);
}

.access-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.access-badge.public {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.access-badge.admin {
    background: rgba(99, 102, 241, 0.2);
    color: var(--accent-primary);
}

.lock-icon {
    width: 14px;
    height: 14px;
}

/* ===== Main Container ===== */
.main-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    padding-bottom: var(--spacing-2xl);
}

/* ===== Glass Card ===== */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--glass-shadow);
}

/* ===== Landing Section ===== */
.landing-section {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 200px);
}

.hero-card {
    text-align: center;
    padding: var(--spacing-2xl);
    max-width: 400px;
    width: 100%;
}

.hero-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-icon svg {
    width: 100%;
    height: 100%;
    color: white;
}

.hero-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.9375rem;
    font-weight: 500;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
    -webkit-tap-highlight-color: transparent;
}

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

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.1);
}

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

.btn-ghost:hover:not(:disabled) {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
    border-radius: var(--border-radius-lg);
}

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

.btn-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ===== Panels Container ===== */
.panels-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.logout-container {
    display: flex;
    justify-content: flex-end;
}

/* ===== Control Panel ===== */
.control-panel {
    padding: var(--spacing-lg);
}

.panel-header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--glass-border);
}

.panel-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.panel-subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

.control-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===== Toggle Switch ===== */
.toggle-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.toggle-switch {
    position: relative;
    width: 56px;
    height: 32px;
    cursor: pointer;
}

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

.toggle-slider {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-tertiary);
    border-radius: 32px;
    transition: background var(--transition-normal);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 24px;
    height: 24px;
    left: 4px;
    bottom: 4px;
    background: white;
    border-radius: 50%;
    transition: transform var(--transition-normal);
}

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

.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(24px);
}

.toggle-text {
    font-weight: 500;
    min-width: 30px;
}

/* ===== Color Picker ===== */
.color-picker-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.color-wheel-wrapper {
    position: relative;
    width: 200px;
    height: 200px;
}

#colorWheel {
    border-radius: 50%;
    cursor: crosshair;
    touch-action: none;
}

.color-selector {
    position: absolute;
    width: 20px;
    height: 20px;
    border: 3px solid white;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
    pointer-events: none;
    transform: translate(-50%, -50%);
    top: 50%;
    left: 50%;
}

.color-preview-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.color-preview {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius-md);
    border: 2px solid var(--glass-border);
    background: white;
}

.color-value {
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ===== Preset Buttons ===== */
.preset-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.preset-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    -webkit-tap-highlight-color: transparent;
}

.preset-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

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

/* ===== Sliders ===== */
.slider-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

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

.slider-label {
    min-width: 120px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.slider {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    outline: none;
    cursor: pointer;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    background: var(--accent-gradient);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.4);
    transition: transform var(--transition-fast);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    background: var(--accent-gradient);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.4);
}

.slider-value {
    min-width: 80px;
    text-align: right;
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.slider-percent {
    color: var(--text-muted);
}

.duration-value {
    min-width: 140px;
}

/* Slider color variations */
.ww-slider::-webkit-slider-thumb {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    box-shadow: 0 2px 8px rgba(251, 191, 36, 0.4);
}

.cw-slider::-webkit-slider-thumb {
    background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 100%);
    box-shadow: 0 2px 8px rgba(186, 230, 253, 0.4);
}

.brightness-slider::-webkit-slider-thumb {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    box-shadow: 0 2px 8px rgba(253, 230, 138, 0.4);
}

/* ===== Action Buttons ===== */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
}

/* ===== Admin Panel ===== */
.schedule-controls {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.time-blocks-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

/* ===== Time Block ===== */
.time-block {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
}

.time-block:hover {
    border-color: rgba(255, 255, 255, 0.15);
}

.time-block-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--glass-border);
}

.time-block-name {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    outline: none;
}

.time-block-name::placeholder {
    color: var(--text-muted);
}

.time-block-actions {
    display: flex;
    gap: var(--spacing-xs);
}

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

.time-block-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.time-block-btn.delete:hover {
    color: var(--error);
}

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

.time-block-content {
    display: grid;
    gap: var(--spacing-md);
}

.time-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.time-input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.time-input-group label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.time-input {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: 0.9375rem;
    outline: none;
    transition: border-color var(--transition-fast);
}

.time-input:focus {
    border-color: var(--accent-primary);
}

.state-section {
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--border-radius-md);
}

.state-title {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.state-controls {
    display: grid;
    gap: var(--spacing-sm);
}

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

.state-row label {
    min-width: 80px;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.state-row input[type="range"] {
    flex: 1;
    height: 6px;
}

.state-row input[type="color"] {
    width: 40px;
    height: 32px;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    background: transparent;
}

.state-row input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

.state-row input[type="color"]::-webkit-color-swatch {
    border: 2px solid var(--glass-border);
    border-radius: var(--border-radius-sm);
}

.state-value {
    min-width: 40px;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: right;
}

/* Sunrise/Sunset Toggle */
.sun-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(251, 191, 36, 0.1);
    border-radius: var(--border-radius-sm);
}

.sun-toggle label {
    font-size: 0.8125rem;
    color: var(--warning);
}

.sun-toggle select {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: 0.8125rem;
}

.save-container {
    margin-top: var(--spacing-md);
}

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal {
    width: 100%;
    max-width: 400px;
    animation: slideUp 0.3s ease;
}

@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(--glass-border);
}

.modal-title {
    font-size: 1.125rem;
    font-weight: 600;
}

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

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

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

.modal-body {
    padding: var(--spacing-lg);
}

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

/* ===== Input ===== */
.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.input {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: border-color var(--transition-fast);
}

.input:focus {
    border-color: var(--accent-primary);
}

.input::placeholder {
    color: var(--text-muted);
}

.error-message {
    color: var(--error);
    font-size: 0.875rem;
}

/* ===== Toast ===== */
.toast-container {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: 2000;
    pointer-events: none;
}

.toast {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-size: 0.9375rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
    pointer-events: auto;
}

.toast.success {
    border-color: var(--success);
    background: rgba(16, 185, 129, 0.2);
}

.toast.error {
    border-color: var(--error);
    background: rgba(239, 68, 68, 0.2);
}

.toast.warning {
    border-color: var(--warning);
    background: rgba(245, 158, 11, 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(-20px);
    }
}

/* ===== Responsive ===== */
@media (max-width: 600px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .header-status {
        width: 100%;
        justify-content: space-between;
    }
    
    .main-container {
        padding: var(--spacing-md);
    }
    
    .hero-card {
        padding: var(--spacing-xl);
    }
    
    .control-panel {
        padding: var(--spacing-md);
    }
    
    .slider-row {
        flex-wrap: wrap;
    }
    
    .slider-label {
        min-width: 100%;
        margin-bottom: var(--spacing-xs);
    }
    
    .slider-value {
        min-width: 60px;
    }
    
    .time-row {
        grid-template-columns: 1fr;
    }
    
    .schedule-controls {
        flex-direction: column;
    }
    
    .schedule-controls .btn {
        width: 100%;
    }
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-muted);
}

.empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state p {
    font-size: 0.9375rem;
}