/* ======================================
   CSS Variables & Design System
   ====================================== */
:root {
    /* Background Colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    
    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Accent Colors */
    --neon-green: #10b981;
    --neon-green-glow: rgba(16, 185, 129, 0.4);
    --success: #10b981;
    --warning: #f59e0b;
    --warning-glow: rgba(245, 158, 11, 0.4);
    --danger: #ef4444;
    --danger-glow: rgba(239, 68, 68, 0.4);
    --info: #3b82f6;
    --info-glow: rgba(59, 130, 246, 0.4);
    
    /* Chart Colors */
    --chart-actual: #10b981;
    --chart-target: #3b82f6;
    --chart-mechanical: #ef4444;
    --chart-electrical: #f59e0b;
    --chart-mold: #8b5cf6;
    --chart-break: #06b6d4;
    
    /* Borders & Shadows */
    --border-color: #334155;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 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);
    --shadow-glow: 0 0 30px rgba(16, 185, 129, 0.15);
    
    /* 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: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Cairo', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        radial-gradient(ellipse at top right, rgba(16, 185, 129, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at bottom left, rgba(59, 130, 246, 0.05) 0%, transparent 50%);
}

/* ======================================
   Header Styles
   ====================================== */
.dashboard-header {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg) var(--spacing-xl);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

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

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--neon-green) 0%, #059669 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 20px var(--neon-green-glow);
    animation: pulse-glow 2s infinite;
}

.logo-icon svg {
    width: 28px;
    height: 28px;
    color: white;
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 20px var(--neon-green-glow);
    }
    50% {
        box-shadow: 0 0 35px var(--neon-green-glow), 0 0 50px var(--neon-green-glow);
    }
}

.logo-section h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--text-primary) 0%, var(--neon-green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.clock-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--bg-card);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.clock-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.clock-icon svg {
    width: 24px;
    height: 24px;
    color: var(--neon-green);
}

.digital-clock {
    font-size: 1.75rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--neon-green);
    text-shadow: 0 0 10px var(--neon-green-glow);
    letter-spacing: 2px;
}

.date-display {
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding-right: var(--spacing-md);
    border-right: 1px solid var(--border-color);
}

/* ======================================
   Main Dashboard
   ====================================== */
.dashboard-main {
    max-width: 1600px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

/* ======================================
   KPI Cards Section
   ====================================== */
.kpi-section {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.kpi-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--neon-green) 0%, var(--info) 100%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.kpi-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
    border-color: var(--neon-green);
}

.kpi-card:hover::before {
    opacity: 1;
}

.kpi-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

.kpi-icon svg {
    width: 28px;
    height: 28px;
}

.production-icon {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(16, 185, 129, 0.1) 100%);
    color: var(--neon-green);
}

.oee-icon {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(16, 185, 129, 0.1) 100%);
    color: var(--neon-green);
}

.scrap-icon {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.2) 0%, rgba(245, 158, 11, 0.1) 100%);
    color: var(--warning);
}

.machines-icon {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2) 0%, rgba(59, 130, 246, 0.1) 100%);
    color: var(--info);
}

.kpi-content {
    flex: 1;
}

.kpi-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.kpi-value {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-xs);
}

.kpi-value .counter {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
    color: var(--text-primary);
}

.kpi-value.success .counter {
    color: var(--neon-green);
    text-shadow: 0 0 20px var(--neon-green-glow);
}

.kpi-value.danger .counter {
    color: var(--danger);
    text-shadow: 0 0 20px var(--danger-glow);
}

.kpi-unit {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.kpi-separator {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-muted);
    margin: 0 var(--spacing-xs);
}

.kpi-total {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-muted);
}

.kpi-trend {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    width: fit-content;
}

.kpi-trend svg {
    width: 16px;
    height: 16px;
}

.kpi-trend.positive {
    background: rgba(16, 185, 129, 0.15);
    color: var(--neon-green);
}

.kpi-trend.negative {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.kpi-status {
    margin-top: auto;
}

.machine-dots {
    display: flex;
    gap: var(--spacing-sm);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    transition: all var(--transition-normal);
}

.dot.active {
    background: var(--neon-green);
    box-shadow: 0 0 10px var(--neon-green-glow);
    animation: dot-pulse 1.5s infinite;
}

.dot.inactive {
    background: var(--danger);
    box-shadow: 0 0 10px var(--danger-glow);
}

@keyframes dot-pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.8;
    }
}

/* ======================================
   Charts Section
   ====================================== */
.charts-section {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.chart-container {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.chart-container:hover {
    border-color: var(--neon-green);
    box-shadow: var(--shadow-glow);
}

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

.chart-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.chart-subtitle {
    font-size: 0.875rem;
    color: var(--text-muted);
    background: var(--bg-primary);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
}

.chart-wrapper {
    position: relative;
    height: 300px;
}

.doughnut-wrapper {
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ======================================
   Actions Section
   ====================================== */
.actions-section {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.refresh-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: linear-gradient(135deg, var(--neon-green) 0%, #059669 100%);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
    font-weight: 700;
    font-family: 'Cairo', sans-serif;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 15px var(--neon-green-glow);
}

.refresh-btn svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-slow);
}

.refresh-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--neon-green-glow);
}

.refresh-btn:hover svg {
    transform: rotate(180deg);
}

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

.refresh-btn.loading svg {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.last-update {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.last-update span:last-child {
    color: var(--text-secondary);
    font-weight: 600;
}

/* ======================================
   Footer
   ====================================== */
.dashboard-footer {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--text-muted);
    font-size: 0.875rem;
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-xl);
}

/* ======================================
   Responsive Design
   ====================================== */
@media (max-width: 1200px) {
    .kpi-section {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .charts-section {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .dashboard-header {
        padding: var(--spacing-md);
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .logo-section {
        flex-direction: column;
    }
    
    .logo-section h1 {
        font-size: 1.25rem;
        text-align: center;
    }
    
    .clock-section {
        flex-direction: column;
        width: 100%;
        justify-content: center;
    }
    
    .date-display {
        padding-right: 0;
        border-right: none;
        padding-top: var(--spacing-sm);
        border-top: 1px solid var(--border-color);
    }
    
    .kpi-section {
        grid-template-columns: 1fr;
    }
    
    .dashboard-main {
        padding: var(--spacing-md);
    }
    
    .kpi-value .counter {
        font-size: 2rem;
    }
    
    .chart-wrapper {
        height: 250px;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .logo-icon {
        width: 40px;
        height: 40px;
    }
    
    .digital-clock {
        font-size: 1.5rem;
    }
    
    .kpi-card {
        padding: var(--spacing-lg);
    }
    
    .chart-container {
        padding: var(--spacing-md);
    }
    
    .refresh-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ======================================
   Animations
   ====================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.kpi-card {
    animation: fadeIn 0.5s ease forwards;
}

.kpi-card:nth-child(1) { animation-delay: 0.1s; }
.kpi-card:nth-child(2) { animation-delay: 0.2s; }
.kpi-card:nth-child(3) { animation-delay: 0.3s; }
.kpi-card:nth-child(4) { animation-delay: 0.4s; }

.chart-container {
    animation: fadeIn 0.5s ease forwards;
    animation-delay: 0.5s;
    opacity: 0;
}

.chart-container:nth-child(2) {
    animation-delay: 0.6s;
}

/* Alert colors for scrap rate */
.kpi-value.alert .counter {
    color: var(--danger);
    text-shadow: 0 0 20px var(--danger-glow);
    animation: pulse-alert 1s infinite;
}

@keyframes pulse-alert {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}