:root {
    --bg-start: #0f1a12;
    --bg-end:   #0a0f0a;
    --card-bg:  #0c120d;
    --input-bg: #0a0e0b;
    --border:   #c026d3;
    --accent:   #d946ef;
    --accent-dark: #b91cf5;
    --text:     #ffffff;
    --text-dim: #d1a8ff;
    --glow:     rgba(192, 38, 211, 0.25);
    --glow-strong: rgba(217, 70, 239, 0.4);
}

* { box-sizing: border-box; }

body {
    background: radial-gradient(ellipse at bottom, var(--bg-start) 0%, var(--bg-end) 100%);
    color: var(--text);
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 2rem;
    padding-top: 4rem;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Announcement Bar */
.announcement-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(44, 1, 44, 0.45);   
    color: #ffffff;
    text-align: center;
    padding: 0.75rem;
    z-index: 1000;
    font-size: clamp(0.75rem, 4vw, 1rem);
    border-bottom: 1px solid rgba(192, 38, 211, 0.18);   
    backdrop-filter: blur(6px);
}

.logo-text {
    font-size: clamp(1.8rem, 6vw, 2.8rem);
    margin: 0;
    line-height: 1;
    text-align: center;
    font-weight: 800;
    background: linear-gradient(90deg, #d946ef, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 15px rgba(217, 70, 239, 0.6);
}

/* Stars */
.stars {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
}

.star {
    position: absolute;
    background: #ffffff;
    border-radius: 50%;
    opacity: 0.75;
    animation: twinkle 4.5s infinite alternate;
    box-shadow: 0 0 8px 2px rgba(255, 255, 255, 0.5);
}

@keyframes twinkle {
    0%   { opacity: 0.45; transform: scale(0.85); }
    100% { opacity: 0.95; transform: scale(1.15); }
}

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

/* Header */
.header-titles h1 {
    font-size: clamp(1.8rem, 5vw, 2.8rem);
    margin: 0;
    background: linear-gradient(90deg, var(--accent-dark), var(--accent), #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.menu-toggle {
    padding: 0.6rem 0.9rem;
    border-radius: 0.5rem;
    color: #ffffff;
    cursor: pointer;
    border: none;
    font-size: clamp(1.2rem, 5vw, 1.6rem);
    background: transparent;
    transition: all 0.25s ease;
}

.menu-toggle:hover {
    color: var(--accent);
    text-shadow: 0 0 12px var(--glow);
    transform: scale(1.1);
}

/* Controls */
.controls {
    display: flex;
    justify-content: center;
    gap: clamp(0.8rem, 3vw, 1.2rem);
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

button {
    padding: clamp(0.6rem, 2vw, 0.75rem) clamp(1rem, 3vw, 1.5rem);
    border-radius: 0.5rem;
    color: #ffffff;
    cursor: pointer;
    border: none;
    font-size: clamp(0.85rem, 3vw, 1rem);
    min-width: clamp(120px, 30vw, 160px);
    transition: all 0.25s ease;
}

.bg-blue-600   { background-color: #2563eb; }
.bg-blue-600:hover   { background-color: #1d4ed8; }
.bg-purple-600 { background-color: #7c3aed; }
.bg-purple-600:hover { background-color: #6d28d9; }
.bg-red-600    { background-color: #dc2626; }
.bg-red-600:hover    { background-color: #b91c1c; }
.bg-green-600  { background-color: #16a34a; }
.bg-green-600:hover  { background-color: #15803d; }

/* Dashboard Grid & Cards */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.dashboard-card {
    background: var(--card-bg);
    padding: clamp(1rem, 4vw, 2rem);
    border-radius: 0.75rem;
    border: 1px solid var(--border);
    box-shadow: 0 8px 25px rgba(0,0,0,0.5), 0 0 20px var(--glow);
    transition: all 0.3s ease;
}

.dashboard-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 35px rgba(0,0,0,0.6), 0 0 30px var(--glow-strong);
}

.dashboard-card h2 {
    color: var(--accent);
    margin-bottom: 1.2rem;
    font-size: clamp(1.2rem, 4vw, 1.5rem);
}

.dashboard-card ul {
    list-style: none;
    padding: 0;
}

.dashboard-card li {
    padding: 0.7rem 0;
    border-bottom: 1px solid rgba(192,38,211,0.15);
    display: flex;
    justify-content: space-between;
    font-size: clamp(0.85rem, 3vw, 1rem);
}

.stats-table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(192,38,211,0.05);
    border-radius: 0.5rem;
    overflow-x: auto;
    display: block;
}

.stats-table th,
.stats-table td {
    padding: clamp(0.5rem, 2vw, 1rem);
    text-align: center;
    border: 1px solid rgba(192,38,211,0.2);
    font-size: clamp(0.8rem, 2.5vw, 1rem);
}

.stats-table th {
    background: rgba(192,38,211,0.1);
    color: var(--accent);
}

#chartContainer {
    grid-column: 1 / -1;
    background: var(--card-bg);
    padding: clamp(1rem, 4vw, 2rem);
    border-radius: 0.75rem;
    border: 1px solid var(--border);
    box-shadow: 0 8px 25px rgba(0,0,0,0.5), 0 0 20px var(--glow);
}

.chart-wrapper {
    max-width: min(320px, 90%);
    margin: 1.5rem auto 0;
}

.day-charts {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.day-chart-card {
    background: var(--card-bg);
    padding: clamp(1rem, 3vw, 1.5rem);
    border-radius: 0.75rem;
    text-align: center;
    border: 1px solid var(--border);
    box-shadow: 0 8px 25px rgba(0,0,0,0.5), 0 0 20px var(--glow);
}

/* Responsive Sidebar - Perfect for all screen sizes */
.sidebar {
    position: fixed;
    top: 0;
    left: -100%;
    width: min(320px, 85%);
    height: 100%;
    background: rgba(12, 18, 13, 0.98);
    backdrop-filter: blur(20px);
    padding: 1rem 0;
    transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1001;
    border-right: 1px solid rgba(192, 38, 211, 0.3);
    box-shadow: 2px 0 30px rgba(0, 0, 0, 0.5), 0 0 30px rgba(192, 38, 211, 0.2);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.sidebar.open {
    left: 0;
}

/* Sidebar Header */
.sidebar-header {
    position: relative;
    padding: clamp(1rem, 4vh, 1.5rem) clamp(1rem, 4vw, 1.5rem);
    font-weight: bold;
    color: var(--accent);
    border-bottom: 2px solid rgba(192,38,211,0.4);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-header span {
    flex: 1;
    font-size: clamp(1rem, 4vw, 1.2rem);
    font-weight: bold;
}

/* Close button - Perfect for touch */
.sidebar-close {
    background: rgba(192, 38, 211, 0.15);
    border: 1px solid rgba(192, 38, 211, 0.4);
    color: #ffffff;
    font-size: clamp(1.2rem, 5vw, 1.6rem);
    font-weight: 300;
    line-height: 1;
    cursor: pointer;
    padding: clamp(0.4rem, 2vh, 0.6rem) clamp(0.8rem, 3vw, 1rem);
    border-radius: 8px;
    transition: all 0.2s ease;
    min-width: auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-close:hover,
.sidebar-close:focus {
    background: rgba(192, 38, 211, 0.3);
    color: var(--accent);
    transform: scale(1.05);
    text-shadow: 0 0 10px var(--glow);
}

/* Sidebar Links */
.sidebar a {
    color: rgba(255,255,255,0.94);
    padding: clamp(0.8rem, 3vh, 1rem) clamp(1rem, 4vw, 1.2rem);
    text-decoration: none;
    display: block;
    transition: all 0.2s ease;
    background: rgba(192, 38, 211, 0.02);
    margin: 0.2rem clamp(0.6rem, 2vw, 0.8rem);
    border-radius: 10px;
    font-size: clamp(0.9rem, 3.5vw, 1rem);
}

.sidebar a:hover {
    background: rgba(192, 38, 211, 0.2);
    transform: translateX(5px);
}

/* Overlay when sidebar is open */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Tablet Styles (768px - 1024px) */
@media (min-width: 768px) and (max-width: 1024px) {
    .sidebar {
        width: 300px;
        left: -320px;
    }
    
    .sidebar a {
        padding: 1rem 1.2rem;
        font-size: 1rem;
    }
    
    .dashboard-grid {
        gap: 1.5rem;
    }
}

/* Large Mobile Styles (481px - 767px) */
@media (min-width: 481px) and (max-width: 767px) {
    body {
        padding: 1.5rem;
        padding-top: 4rem;
    }
    
    .sidebar {
        width: 280px;
        left: -300px;
    }
    
    .sidebar-header span {
        font-size: 1.1rem;
    }
    
    .sidebar a {
        padding: 0.9rem 1rem;
        font-size: 0.95rem;
    }
    
    .controls {
        gap: 1rem;
    }
    
    button {
        min-width: 140px;
    }
}

/* Small Mobile Styles (up to 480px) */
@media (max-width: 480px) {
    body {
        padding: 1rem;
        padding-top: 3.8rem;
    }
    
    .sidebar {
        width: 260px;
        left: -280px;
    }
    
    .sidebar-header {
        padding: 1rem;
    }
    
    .sidebar-header span {
        font-size: 1rem;
    }
    
    .sidebar a {
        padding: 0.8rem 0.9rem;
        font-size: 0.9rem;
        margin: 0.15rem 0.5rem;
        border-radius: 8px;
    }
    
    .sidebar-close {
        font-size: 1.4rem;
        padding: 0.3rem 0.7rem;
    }
    
    .dashboard-card {
        padding: 1rem;
    }
    
    .stats-table th,
    .stats-table td {
        padding: 0.5rem;
        font-size: 0.75rem;
    }
}

/* Extra Small Devices (up to 360px) */
@media (max-width: 360px) {
    .sidebar {
        width: 240px;
        left: -260px;
    }
    
    .sidebar a {
        padding: 0.7rem 0.8rem;
        font-size: 0.85rem;
    }
    
    button {
        min-width: 100px;
        padding: 0.5rem 0.8rem;
        font-size: 0.8rem;
    }
    
    .dashboard-card h2 {
        font-size: 1.1rem;
    }
    
    .dashboard-card li {
        font-size: 0.8rem;
    }
}

/* Landscape Mode on Mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .sidebar {
        padding: 0.5rem 0;
    }
    
    .sidebar-header {
        padding: 0.5rem 1rem;
        margin-bottom: 0.5rem;
    }
    
    .sidebar a {
        padding: 0.5rem 0.8rem;
        margin: 0.1rem 0.5rem;
    }
    
    .sidebar-close {
        padding: 0.2rem 0.6rem;
    }
}

/* High Resolution Displays (Retina, 4K) */
@media (min-width: 1920px) {
    .container {
        max-width: 1600px;
    }
    
    .dashboard-card {
        padding: 2.5rem;
    }
    
    .dashboard-card h2 {
        font-size: 1.8rem;
    }
    
    .sidebar {
        width: 350px;
    }
    
    .sidebar a {
        padding: 1.2rem 1.5rem;
        font-size: 1.1rem;
    }
}
/* Mobile Optimizations */
@media (max-width: 768px) {
    /* Reduce chart sizes */
    .day-charts {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 12px;
    }
    
    .day-chart-card {
        padding: 8px;
    }
    
    .day-chart-card h3 {
        font-size: 14px;
        margin-bottom: 8px;
    }
    
    .chart-wrapper canvas {
        width: 100% !important;
        height: auto !important;
        min-height: 120px;
    }
    
    /* Optimize table for mobile */
    .stats-table {
        font-size: 12px;
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
    
    .stats-table td,
    .stats-table th {
        padding: 6px 8px;
    }
    
    /* Reduce card padding */
    .dashboard-card {
        padding: 12px;
        margin-bottom: 12px;
    }
    
    /* Optimize statistics cards */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .stat-card {
        padding: 10px;
    }
    
    .stat-card h3 {
        font-size: 12px;
    }
    
    .stat-card .number {
        font-size: 20px;
    }
    
    /* Disable hover effects on mobile */
    button:hover {
        transform: none;
    }
    
    /* Optimize animations */
    .star {
        animation: none !important;
        opacity: 0.3;
    }
    
    /* Reduce backdrop blur on mobile for performance */
    .sidebar {
        backdrop-filter: blur(5px);
    }
}

/* Low-end device optimizations */
@media (max-width: 480px) and (pointer: coarse) {
    .day-charts {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-table {
        font-size: 10px;
    }
    
    .stats-table td,
    .stats-table th {
        padding: 4px 6px;
    }
}