@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    /* 2026 Premium Color System */
    --bg-dark: #0d0d0d;
    --bg-surface: #161616;
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-bg-hover: rgba(255, 255, 255, 0.05);
    --glass-blur: 12px;
    
    /* Typography */
    --text-primary: #ffffff;
    --text-secondary: #a1a1a1;
    --text-tertiary: #6b6b6b;
    
    /* Accents */
    --accent: #5b8def;
    --accent-secondary: #7c3aed;
    --accent-glow: rgba(91, 141, 239, 0.25);
    --accent-gradient: linear-gradient(135deg, #5b8def 0%, #7c3aed 100%);
    
    /* Borders & Surfaces */
    --border: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.15);
    --input-bg: rgba(255, 255, 255, 0.05);
    --input-bg-hover: rgba(255, 255, 255, 0.07);
    
    /* Interactive Elements */
    --btn-bg: var(--accent-gradient);
    --btn-shadow: 0 8px 32px rgba(91, 141, 239, 0.25);
    --btn-hover-shadow: 0 12px 48px rgba(91, 141, 239, 0.35);
    
    /* Status Colors */
    --error-bg: rgba(239, 68, 68, 0.1);
    --error-text: #ef4444;
    --error-border: rgba(239, 68, 68, 0.2);
    --success-bg: rgba(34, 197, 94, 0.1);
    --success-text: #22c55e;
    
    /* Gradients */
    --gradient-start: #1a1a1a;
    --gradient-end: #0d0d0d;
    --glass-gradient: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    
    /* Spacing System (8px grid) */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-base: 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    --transition-fast: 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
    --transition-slow: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.light-theme {
    /* Light mode overrides - Premium aesthetic */
    --bg-dark: #fafafa;
    --bg-surface: #ffffff;
    --card-bg: rgba(0, 0, 0, 0.02);
    --card-bg-hover: rgba(0, 0, 0, 0.04);
    
    --text-primary: #0a0a0a;
    --text-secondary: #525252;
    --text-tertiary: #737373;
    
    --accent: #4f7df3;
    --accent-secondary: #8b5cf6;
    --accent-glow: rgba(79, 125, 243, 0.15);
    --accent-gradient: linear-gradient(135deg, #4f7df3 0%, #8b5cf6 100%);
    
    --border: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(0, 0, 0, 0.12);
    --input-bg: rgba(0, 0, 0, 0.03);
    --input-bg-hover: rgba(0, 0, 0, 0.05);
    
    --gradient-start: #ffffff;
    --gradient-end: #fafafa;
    --glass-gradient: linear-gradient(135deg, rgba(0, 0, 0, 0.02) 0%, rgba(0, 0, 0, 0.01) 100%);
}

/* Logo Toggling */
/* Dark theme (default): show dark logo on dark background */
.logo-dark { display: block !important; }
.logo-light { display: none !important; }
/* Light theme: show light logo on light background */
.light-theme .logo-dark { display: none !important; }
.light-theme .logo-light { display: block !important; }

/* Global Reset & Base Styles */
* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    transition: background-color var(--transition-base);
}

@media (max-width: 1440px) {
    html { font-size: 15px; }
}
@media (max-width: 1024px) {
    html { font-size: 14px; }
}
@media (max-width: 768px) {
    html { font-size: 13px; }
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    font-weight: 400;
    line-height: 1.5;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* Subtle grain texture overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.015;
    z-index: 1;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* Premium Typography System */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin: 0;
    color: var(--text-primary);
}

h1 { font-size: 2.5rem; font-weight: 700; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin: 0 0 1rem 0;
    color: var(--text-secondary);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
    border-radius: 6px;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    border: 2px solid var(--bg-dark);
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* Selection */
::selection {
    background: var(--accent-glow);
    color: var(--text-primary);
}

/* Login Container - Premium 2026 */
.login-container {
    min-height: 100vh;
    width: 100vw;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-dark);
    position: relative;
    z-index: 2;
    overflow-x: hidden;
    padding: clamp(var(--spacing-md), 5vw, var(--spacing-2xl));
}

/* Animated gradient orbs for premium effect */
.login-container::before,
.login-container::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    filter: blur(max(100px, 10vw));
    opacity: 0.4;
    animation: float 20s infinite ease-in-out;
    z-index: -1;
    pointer-events: none;
}

.login-container::before {
    width: min(500px, 60vw);
    height: min(500px, 60vw);
    background: var(--accent);
    top: -20%;
    left: -10%;
}

.login-container::after {
    width: min(400px, 50vw);
    height: min(400px, 50vw);
    background: var(--accent-secondary);
    bottom: -20%;
    right: -10%;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(30px, -30px) rotate(90deg); }
    50% { transform: translate(-20px, 20px) rotate(180deg); }
    75% { transform: translate(-30px, -20px) rotate(270deg); }
}

/* Login Card - Glassmorphism Premium */
.login-card {
    position: relative;
    z-index: 10;
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    padding: clamp(var(--spacing-xl), 8vw, var(--spacing-3xl));
    border-radius: var(--radius-xl);
    box-shadow: 
        0 24px 48px rgba(0, 0, 0, 0.12),
        0 12px 24px rgba(0, 0, 0, 0.08),
        inset 0 0 0 1px var(--border);
    width: min(95%, 440px);
    animation: cardEntrance 0.8s var(--transition-base);
    transform-style: preserve-3d;
    transition: transform var(--transition-base);
}

.login-card:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 32px 64px rgba(0, 0, 0, 0.14),
        0 16px 32px rgba(0, 0, 0, 0.1),
        inset 0 0 0 1px var(--border-hover);
}

@keyframes cardEntrance {
    0% {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Logo Styling */
.logo-img {
    background-color: transparent !important;
    object-fit: contain;
    display: block;
    filter: none !important;
    max-height: min(80px, 15vh);
    width: auto;
    transition: transform var(--transition-base);
    margin-bottom: var(--spacing-lg);
}

.logo-img:hover {
    transform: scale(1.05) translateY(-2px);
}

.login-title {
    text-align: center;
    font-size: clamp(1.5rem, 5vw, 2.25rem);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
    color: var(--text-primary);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Premium Form Inputs */
.form-input {
    background-color: var(--input-bg) !important;
    border: 1px solid var(--border) !important;
    color: var(--text-primary) !important;
    padding: var(--spacing-sm) var(--spacing-md) !important;
    font-size: 1rem !important;
    font-weight: 400 !important;
    border-radius: var(--radius-md) !important;
    margin-bottom: var(--spacing-md) !important;
    width: 100%;
    height: min(56px, 12vh) !important;
    transition: all var(--transition-base) !important;
    outline: none !important;
    font-family: inherit !important;
    position: relative;
}

.form-input:hover {
    background-color: var(--input-bg-hover) !important;
    border-color: var(--border-hover) !important;
    transform: translateY(-1px);
}

.form-input:focus {
    border-color: var(--accent) !important;
    background-color: var(--input-bg-hover) !important;
    box-shadow: 
        0 0 0 3px var(--accent-glow),
        0 4px 12px rgba(0, 0, 0, 0.1) !important;
}

.form-input::placeholder {
    color: var(--text-tertiary) !important;
    font-weight: 400;
}

/* Premium Button Styles */
.login-button {
    background: var(--btn-bg) !important;
    border: none !important;
    color: #ffffff !important;
    padding: 0 var(--spacing-xl) !important;
    border-radius: var(--radius-md) !important;
    font-weight: 600 !important;
    font-size: 1rem !important;
    width: 100%;
    height: min(56px, 12vh) !important;
    cursor: pointer;
    transition: all var(--transition-base) !important;
    margin-top: var(--spacing-sm) !important;
    box-shadow: var(--btn-shadow) !important;
    text-transform: none;
    letter-spacing: -0.01em;
    position: relative;
    overflow: hidden;
}

.login-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.login-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--btn-hover-shadow) !important;
}

.login-button:hover::before {
    width: 300px;
    height: 300px;
}

.login-button:active {
    transform: translateY(0);
    box-shadow: var(--btn-shadow) !important;
}

.login-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.login-error:not(:empty) {
    margin-top: var(--spacing-lg);
    text-align: center;
    color: var(--error-text);
    background: var(--error-bg);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--error-border);
    font-size: 0.875rem;
    font-weight: 500;
    animation: errorShake 0.3s ease-in-out;
}

@keyframes errorShake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-2px); }
    40%, 80% { transform: translateX(2px); }
}

/* Progress Bar - Premium Style */
#progress-container {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    animation: slideInDown 0.4s var(--transition-base);
    margin-top: var(--spacing-xl);
}

@keyframes slideInDown {
    0% { opacity: 0; transform: translateY(-20px); }
    100% { opacity: 1; transform: translateY(0); }
}

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

#fetch-progress-bar {
    background-color: rgba(255, 255, 255, 0.05) !important;
    border-radius: var(--radius-full) !important;
    overflow: hidden;
    height: 10px !important;
    flex: 1;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

#fetch-progress-bar .progress-bar {
    background: var(--accent-gradient) !important;
    box-shadow: 0 0 20px var(--accent-glow);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1) !important;
    border-radius: var(--radius-full) !important;
    position: relative;
    overflow: hidden;
}

#fetch-progress-bar .progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.3) 50%,
        transparent 100%
    );
    animation: shimmerProgress 1.5s infinite;
}

@keyframes shimmerProgress {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

#progress-percentage {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--accent);
    min-width: 60px;
    text-align: right;
    text-shadow: 0 0 12px var(--accent-glow);
}

#progress-status {
    font-weight: 500;
    letter-spacing: -0.01em;
    color: var(--text-secondary);
    margin-top: var(--spacing-sm);
}

/* Dashboard Main Container */
#theme-main-container {
    min-height: 100vh;
    width: 100%;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    transition: all var(--transition-base);
    position: relative;
    z-index: 2;
    overflow-x: hidden;
}

/* Dashboard Layout */
#dashboard-container {
    display: flex;
    min-height: 100vh;
    width: 100%;
    position: relative;
}

/* Theme Switcher - Premium Floating Button */
.theme-switch-btn {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    z-index: 9999;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.12),
        inset 0 0 0 1px var(--border);
    transition: all var(--transition-base);
    font-size: 1.25rem;
    outline: none;
}

.theme-switch-btn:hover {
    transform: translateY(-2px) scale(1.05);
    border-color: var(--accent);
    box-shadow: 
        0 12px 40px rgba(0, 0, 0, 0.15),
        0 0 0 3px var(--accent-glow),
        inset 0 0 0 1px var(--accent);
}

.theme-switch-btn:active {
    transform: translateY(0) scale(0.98);
}

/* Sidebar - Premium Navigation */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 280px;
    padding: var(--spacing-xl);
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-right: 1px solid var(--border);
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Sidebar Toggle Button */
.sidebar-toggle {
    position: absolute;
    right: -14px;
    top: 32px;
    width: 28px;
    height: 28px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 101;
    transition: all var(--transition-base);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    font-size: 0.75rem;
    outline: none;
    padding: 0;
}

.sidebar-toggle:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    transform: scale(1.1);
}

/* Sidebar Collapsed State */
.sidebar-collapsed .sidebar {
    width: 80px;
    padding: var(--spacing-xl) var(--spacing-md);
}

.sidebar-collapsed .sidebar-logo {
    justify-content: center;
    margin-bottom: var(--spacing-2xl);
    padding: 0;
}

.sidebar-collapsed .sidebar-logo img {
    height: 24px;
}

.sidebar-collapsed .nav-link-custom {
    padding: var(--spacing-md);
}

.sidebar-collapsed .nav-link-custom span:last-child {
    display: none;
}

.sidebar-collapsed .nav-link-custom span:first-child {
    margin-right: 0 !important;
    font-size: 1.25rem;
}

.sidebar-collapsed .content-area {
    margin-left: 80px;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-3xl);
    padding: 0 var(--spacing-sm);
    transition: all 0.4s ease;
}

.sidebar-logo img {
    height: 36px;
    width: auto;
    filter: none !important;
    transition: transform var(--transition-base);
}

.sidebar-logo img:hover {
    transform: scale(1.05);
}

/* Navigation Links */
.nav-link-custom {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    font-weight: 500;
    font-size: 0.9375rem;
    letter-spacing: -0.01em;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.nav-link-custom::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: var(--glass-gradient);
    transition: width var(--transition-base);
    border-radius: var(--radius-md);
}

.nav-link-custom:hover {
    background-color: var(--card-bg-hover);
    color: var(--text-primary);
    transform: translateX(4px);
}

.nav-link-custom:hover::before {
    width: 3px;
    background: var(--accent-gradient);
}

.nav-link-custom.active {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 
        0 4px 20px var(--accent-glow),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    font-weight: 600;
}

.nav-link-custom.active::before {
    display: none;
}

.nav-link-custom span {
    position: relative;
    z-index: 1;
}

.sidebar-footer {
    margin-top: auto;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Content Area - Main Canvas */
.content-area {
    flex: 1;
    margin-left: 280px;
    padding: clamp(var(--spacing-md), 4vw, var(--spacing-3xl));
    min-height: 100vh;
    background: var(--bg-dark);
    position: relative;
    overflow-x: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Background gradient mesh */
.content-area::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(
        circle at 20% 80%,
        var(--accent-glow) 0%,
        transparent 50%
    ),
    radial-gradient(
        circle at 80% 20%,
        rgba(124, 58, 237, 0.15) 0%,
        transparent 50%
    ),
    radial-gradient(
        circle at 40% 40%,
        rgba(91, 141, 239, 0.1) 0%,
        transparent 50%
    );
    opacity: 0.3;
    z-index: -1;
    pointer-events: none;
}

@keyframes meshFloat {
    0%, 100% { transform: translate(-50%, -50%) scale(1) rotate(0deg); }
    50% { transform: translate(-50%, -50%) scale(1.1) rotate(180deg); }
}

/* Dashboard Cards - Bento Box Design */
.dashboard-card {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-lg);
    padding: clamp(var(--spacing-lg), 4vw, var(--spacing-xl));
    border: 1px solid var(--border);
    margin-bottom: var(--spacing-lg);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
    box-shadow: 
        0 4px 24px rgba(0, 0, 0, 0.06),
        inset 0 0 0 1px var(--border);
    width: 100%;
}

/* Subtle gradient overlay for depth */
.dashboard-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(
        to bottom,
        rgba(255, 255, 255, 0.03),
        transparent
    );
    pointer-events: none;
    opacity: 0.5;
}

.dashboard-card:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.08),
        0 0 0 1px var(--accent),
        inset 0 0 0 1px var(--border-hover);
    background: var(--card-bg-hover);
}

/* Card variations */
.dashboard-card.primary {
    background: linear-gradient(135deg, var(--card-bg) 0%, rgba(91, 141, 239, 0.05) 100%);
}

.dashboard-card.secondary {
    background: linear-gradient(135deg, var(--card-bg) 0%, rgba(124, 58, 237, 0.05) 100%);
}

.section-title {
    font-size: clamp(1.25rem, 4vw, 1.75rem);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    letter-spacing: -0.02em;
    position: relative;
    display: inline-block;
}

/* Animated underline accent */
.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
}

.dashboard-card:hover .section-title::after {
    width: 60px;
}

/* Data Table - Premium Design */
.data-table-container {
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    margin-top: var(--spacing-lg);
    box-shadow: 
        0 4px 24px rgba(0, 0, 0, 0.06),
        inset 0 0 0 1px var(--border);
}

.custom-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    overflow-x: auto;
    display: block;
}

.custom-table thead {
    position: sticky;
    top: 0;
    z-index: 10;
}

.custom-table th {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(8px);
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    letter-spacing: 0.01em;
    text-transform: uppercase;
}

.custom-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-weight: 400;
    font-variant-numeric: tabular-nums;
    transition: all var(--transition-fast);
}

.custom-table tbody tr {
    transition: all var(--transition-fast);
}

.custom-table tbody tr:hover {
    background-color: rgba(91, 141, 239, 0.05);
    transform: scale(1.005);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.custom-table tbody tr:hover td {
    color: var(--text-primary);
    border-bottom-color: var(--accent);
}

.custom-table tr:last-child td {
    border-bottom: none;
}

/* Alternating row colors for better readability */
.custom-table tbody tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.01);
}

/* Input Groups - Premium Form Design */
.api-key-input {
    margin-bottom: var(--spacing-lg);
}

.api-key-input label {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    text-transform: uppercase;
}

/* Custom Dropdown - Premium Select Component */
.custom-dropdown-root {
    position: relative;
    width: 100%;
    margin-bottom: var(--spacing-lg);
    font-family: inherit;
    z-index: 1000;
    isolation: isolate;
}

.custom-dropdown-backdrop {
    position: fixed;
    inset: 0;
    z-index: 999;
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(2px);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.custom-dropdown-backdrop[style*="display: block"] {
    opacity: 1;
}

.custom-dropdown-control {
    width: 100%;
    background-color: var(--input-bg);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 400;
    border-radius: var(--radius-md);
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: all var(--transition-base);
    user-select: none;
    text-align: left;
    appearance: none;
    -webkit-appearance: none;
    position: relative;
}

.custom-dropdown-control:hover {
    background-color: var(--input-bg-hover);
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.custom-dropdown-control:focus-visible {
    border-color: var(--accent);
    box-shadow: 
        0 0 0 3px var(--accent-glow),
        0 4px 12px rgba(0, 0, 0, 0.1);
    outline: none;
}

.custom-dropdown-selected-label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    padding-right: var(--spacing-md);
    color: var(--text-primary);
    font-weight: 400;
}

.custom-dropdown-arrow {
    font-size: 0.75rem;
    color: var(--text-secondary);
    transition: transform var(--transition-base);
}

.custom-dropdown-menu {
    position: absolute;
    top: calc(100% + var(--spacing-sm));
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: 
        0 24px 48px rgba(0, 0, 0, 0.2),
        0 8px 16px rgba(0, 0, 0, 0.12);
    overflow: hidden;
    z-index: 1001;
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    animation: dropdownOpen 0.2s var(--transition-base);
    max-height: 300px;
    overflow-y: auto;
}

@keyframes dropdownOpen {
    0% {
        opacity: 0;
        transform: translateY(-10px) scale(0.95);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.custom-dropdown-option {
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    font-size: 0.9375rem;
    font-weight: 400;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.light-theme .custom-dropdown-option {
    border-bottom: 1px solid rgba(0, 0, 0, 0.03);
}

.custom-dropdown-option:last-child {
    border-bottom: none;
}

.custom-dropdown-option::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-fast);
}

.custom-dropdown-option:hover {
    background-color: var(--card-bg-hover);
    padding-left: calc(var(--spacing-lg) + 4px);
}

.custom-dropdown-option:hover::before {
    transform: scaleX(1);
}

.custom-dropdown-option.active {
    background: var(--accent-gradient);
    color: white;
    font-weight: 600;
}

.custom-dropdown-check {
    opacity: 0;
    font-weight: 700;
    transition: opacity var(--transition-fast);
}

.custom-dropdown-option.active .custom-dropdown-check {
    opacity: 1;
}

.custom-dropdown-empty {
    padding: var(--spacing-lg);
    color: var(--text-tertiary);
    font-size: 0.875rem;
    text-align: center;
}

/* Legacy Dropdown Support - Updated for Premium Design */
.custom-dropdown.form-input {
    padding: 0 !important;
    background-color: transparent !important;
    border: none !important;
    height: auto !important;
}

.custom-dropdown .Select-control {
    background-color: var(--input-bg) !important;
    border: 1px solid var(--border) !important;
    border-radius: var(--radius-md) !important;
    height: 56px !important;
    display: flex !important;
    align-items: center !important;
    transition: all var(--transition-base) !important;
    box-shadow: none !important;
}

.custom-dropdown .Select-control:hover {
    background-color: var(--input-bg-hover) !important;
    border-color: var(--border-hover) !important;
    transform: translateY(-1px);
}

.custom-dropdown .is-focused > .Select-control {
    border-color: var(--accent) !important;
    box-shadow: 
        0 0 0 3px var(--accent-glow),
        0 4px 12px rgba(0, 0, 0, 0.1) !important;
}

.custom-dropdown .Select-placeholder,
.custom-dropdown .Select-value,
.custom-dropdown .Select-value-label {
    color: var(--text-primary) !important;
    padding-left: var(--spacing-md) !important;
    font-size: 1rem !important;
    line-height: 56px !important;
    font-weight: 400 !important;
}

.custom-dropdown .Select-placeholder {
    color: var(--text-tertiary) !important;
}

.custom-dropdown .Select-input {
    height: 56px !important;
    padding-left: var(--spacing-md) !important;
    background-color: transparent !important;
}

.custom-dropdown .Select-input > input {
    color: var(--text-primary) !important;
    font-family: inherit !important;
    padding: 1rem 0 !important;
    background: transparent !important;
    font-weight: 400 !important;
}

.custom-dropdown .Select-menu-outer {
    background-color: var(--bg-surface) !important;
    border: 1px solid var(--border) !important;
    border-radius: var(--radius-md) !important;
    margin-top: var(--spacing-sm) !important;
    box-shadow: 
        0 24px 48px rgba(0, 0, 0, 0.2),
        0 8px 16px rgba(0, 0, 0, 0.12) !important;
    overflow: hidden !important;
    z-index: 1001 !important;
    backdrop-filter: blur(var(--glass-blur)) !important;
    -webkit-backdrop-filter: blur(var(--glass-blur)) !important;
}

.custom-dropdown .VirtualizedSelectOption {
    background-color: transparent !important;
    color: var(--text-primary) !important;
    padding: var(--spacing-md) var(--spacing-lg) !important;
    transition: all var(--transition-fast) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03) !important;
    font-weight: 400 !important;
}

.custom-dropdown .VirtualizedSelectFocusedOption {
    background-color: var(--card-bg-hover) !important;
    color: var(--accent) !important;
}

.custom-dropdown .Select-arrow-zone {
    padding-right: var(--spacing-lg) !important;
}

.custom-dropdown .Select-arrow {
    border-top-color: var(--text-secondary) !important;
    border-width: 5px 5px 0 !important;
}

.custom-dropdown .is-open .Select-arrow {
    border-top-color: var(--accent) !important;
}

/* Page Transitions & Animations */
.page-transition {
    animation: pageEnter 0.6s var(--transition-base);
}

@keyframes pageEnter {
    0% {
        opacity: 0;
        transform: translateY(20px) scale(0.98);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: translateY(8px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

/* Global Loading States - Premium Design */
#_dash-loading {
    display: block !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 3px !important;
    z-index: 10001 !important;
    background: rgba(255, 255, 255, 0.05) !important;
    pointer-events: none !important;
    animation: fadeIn 0.3s ease forwards !important;
    overflow: hidden !important;
}

#_dash-loading::after {
    content: "" !important;
    display: block !important;
    height: 100% !important;
    width: 40% !important;
    background: var(--accent-gradient) !important;
    box-shadow: 
        0 0 20px var(--accent-glow),
        0 0 40px var(--accent-glow) !important;
    animation: loadingSlide 1.5s cubic-bezier(0.4, 0, 0.2, 1) infinite !important;
}

@keyframes loadingSlide {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(350%); }
}

/* Skeleton Loaders - Premium Shimmer Effect */
.shimmer-card {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border);
    min-height: 120px;
}

.shimmer-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        105deg,
        transparent 40%,
        rgba(255, 255, 255, 0.07) 50%,
        transparent 60%
    );
    background-size: 200% 100%;
    animation: shimmerWave 2s infinite;
}

.light-theme .shimmer-card::before {
    background: linear-gradient(
        105deg,
        transparent 40%,
        rgba(0, 0, 0, 0.04) 50%,
        transparent 60%
    );
}

@keyframes shimmerWave {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Skeleton Elements */
.skeleton-text {
    height: 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
    position: relative;
    overflow: hidden;
}

.skeleton-text::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.05) 50%,
        transparent 100%
    );
    animation: shimmerWave 2s infinite;
}

/* Data Fetching Progress Bar */
.fetch-loading-bar {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 3px !important;
    z-index: 10002 !important;
    background: rgba(255, 255, 255, 0.05) !important;
    pointer-events: none !important;
    animation: fadeIn 0.3s ease forwards !important;
    overflow: hidden !important;
}

.fetch-loading-bar::after {
    content: "" !important;
    display: block !important;
    height: 100% !important;
    width: 40% !important;
    background: var(--accent-gradient) !important;
    box-shadow: 
        0 0 20px var(--accent-glow),
        0 0 40px var(--accent-glow) !important;
    animation: loadingSlide 1.5s cubic-bezier(0.4, 0, 0.2, 1) infinite !important;
}

/* Utility Classes */
.glass-panel {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hover-lift {
    transition: transform var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-2px);
}

/* Focus Visible Enhancement */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Premium Chart Styling for Plotly */
.js-plotly-plot .plotly {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

/* Range Slider Handle Styling - Make draggable bars wider and more visible */
.js-plotly-plot .rangeslider .rangehandle {
    width: 12px !important;  /* Increased from default ~8px to 12px */
    background: var(--accent) !important;
    border: 2px solid rgba(255, 255, 255, 0.3) !important;
    border-radius: 4px !important;
    cursor: ew-resize !important;
    transition: all 0.2s ease !important;
}

.js-plotly-plot .rangeslider .rangehandle:hover {
    background: var(--accent-secondary) !important;
    border-color: rgba(255, 255, 255, 0.5) !important;
    transform: scale(1.1) !important;
}

.js-plotly-plot .rangeslider .rangehandle:active {
    background: var(--accent) !important;
    transform: scale(0.95) !important;
}

/* Range slider track styling */
.js-plotly-plot .rangeslider .slider-track {
    background: rgba(255, 255, 255, 0.05) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    border-radius: 2px !important;
}

.js-plotly-plot .rangeslider .slider-track .selection {
    background: rgba(91, 141, 239, 0.2) !important;
    border: none !important;
}

/* Mobile Nav Adjustment */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%) !important;
        position: fixed;
        height: 100vh;
    }
    
    .content-area {
        margin-left: 0 !important;
        padding: var(--spacing-md);
        width: 100%;
        flex: none;
    }

    .sidebar-toggle {
        display: none !important;
    }
}

@media (max-width: 768px) {
    .login-card {
        padding: var(--spacing-2xl) var(--spacing-lg);
    }
    
    .login-title {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .dashboard-card {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-3xl: 32px;
        --spacing-2xl: 24px;
    }
    
    .login-container {
        padding: var(--spacing-md);
    }
    
    .login-card {
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    .logo-img {
        max-height: 60px;
    }
    
    .form-input, .login-button {
        padding: var(--spacing-sm) var(--spacing-md) !important;
    }
}

/* Ultra-wide screen centering to prevent "black bar" feel if desired, 
   but ensuring background covers everything */
@media (min-width: 2560px) {
    .content-area {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    #content-body {
        width: 100%;
        max-width: 1800px;
    }
}

/* Print Styles */
@media print {
    body {
        background: white;
        color: black;
    }
    
    .theme-switch-btn,
    .sidebar-footer {
        display: none;
    }
}