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

:root {
    --primary: #3B82F6;
    --primary-dark: #2563EB;
    --secondary: #8B5CF6;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --dark: #1F2937;
    --dark-light: #374151;
    --light: #F9FAFB;
    --gray: #6B7280;
    --gray-light: #E5E7EB;
    --white: #FFFFFF;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
    color: var(--white);
    line-height: 1.6;
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.2;
}

h1 {
    font-size: 2rem;
}

h2 {
    font-size: 1.5rem;
    color: var(--light);
}

h3 {
    font-size: 1.25rem;
    color: var(--light);
}

/* ===== HEADER ===== */
.main-header {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    border-radius: var(--radius);
    padding: 24px 32px;
    margin-bottom: 32px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 16px;
}


.version {
    background: var(--dark-light);
    color: var(--gray);
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 12px;
    margin-left: 8px;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(16, 185, 129, 0.1);
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ===== MAIN CONTENT ===== */
.main-content {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.section-header {
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.section-header h2 {
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-header i {
    color: var(--primary);
}

/* ===== MONITORING SECTION ===== */
.monitoring-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.monitoring-card {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(10px);
    border-radius: var(--radius);
    padding: 32px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.monitoring-card:hover {
    border-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.card-header {
    margin-bottom: 24px;
}

.card-subtitle {
    color: var(--gray);
    font-size: 0.875rem;
    margin-top: 4px;
}

/* Temperature Display */
.temperature-display {
    display: flex;
    align-items: baseline;
    justify-content: center;
    margin: 32px 0;
}

.temp-unit {
    font-size: 2rem;
    color: var(--gray);
    margin-left: 8px;
    font-weight: 300;
}

.card-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.update-time {
    color: var(--gray);
    font-size: 0.875rem;
}

/* Status Grid */
.status-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.status-item {
    text-align: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.status-label {
    color: var(--gray);
    font-size: 0.875rem;
    margin-bottom: 8px;
}

.status-value {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--white);
}

/* ===== CONTROL SECTION ===== */
.control-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.control-card {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(10px);
    border-radius: var(--radius);
    padding: 32px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.control-content {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Form Elements */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--light);
    font-size: 0.875rem;
    font-weight: 500;
}

.hint {
    color: var(--gray);
    font-size: 0.75rem;
}

.input-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.form-input {
    flex: 1;
    padding: 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--white);
    font-size: 1.25rem;
    font-weight: 500;
    text-align: center;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.08);
}

/* Buttons */
.btn-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--white);
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

.btn-icon:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
}

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

.btn-primary {
    padding: 16px 24px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border: none;
    border-radius: var(--radius-sm);
    color: var(--white);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-outline {
    padding: 16px 24px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--white);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-outline:hover {
    border-color: var(--primary);
    background: rgba(59, 130, 246, 0.1);
}

/* Servo Control */
.servo-display {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.servo-position {
    text-align: center;
    font-size: 1.125rem;
}

.servo-position .label {
    color: var(--gray);
}

.servo-position .value {
    font-size: 2rem;
    font-weight: 600;
    color: var(--primary);
    margin: 0 4px;
}

.servo-position .unit {
    color: var(--gray);
}

.slider-container {
    margin: 16px 0;
}

.slider {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    outline: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid var(--dark);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.slider-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    color: var(--gray);
    font-size: 0.75rem;
}

.servo-presets {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 8px;
}

.servo-presets .btn-primary {
    grid-column: span 2;
}

/* ===== FOOTER ===== */
.main-footer {
    margin-top: 48px;
    padding: 24px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--gray);
    font-size: 0.875rem;
}

.footer-info {
    display: flex;
    gap: 24px;
}

.footer-info span {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    body {
        padding: 12px;
    }
    
    .header-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .monitoring-grid,
    .control-grid {
        grid-template-columns: 1fr;
    }
    
    .status-grid {
        grid-template-columns: 1fr;
    }
    
    .temp-value {
        font-size: 4rem;
    }
    
    .servo-presets {
        grid-template-columns: 1fr;
    }
    
    .servo-presets .btn-primary {
        grid-column: span 1;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .footer-info {
        flex-direction: column;
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .monitoring-card,
    .control-card {
        padding: 24px;
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    h2 {
        font-size: 1.25rem;
    }
    
    .temp-value {
        font-size: 3.5rem;
    }
}

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

.loading {
    opacity: 0.5;
    pointer-events: none;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* ===== SELECTION ===== */
::selection {
    background: rgba(59, 130, 246, 0.3);
    color: var(--white);
}