:root {
    /* Indian Flag Premium Theme Variables */
    --primary-color: #000080; /* Navy Blue / Ashok Chakra */
    --primary-hover: #1e3a8a;
    
    --saffron: #FF9933;
    --saffron-hover: #e68a2e;
    --saffron-light: rgba(255, 153, 51, 0.2);
    
    --green: #138808;
    --green-hover: #107507;
    --green-light: rgba(19, 136, 8, 0.2);
    
    --tricolor-gradient: linear-gradient(135deg, var(--saffron) 0%, var(--primary-color) 50%, var(--green) 100%);
    --tricolor-text: linear-gradient(90deg, var(--saffron) 0%, var(--primary-color) 40%, var(--green) 100%);
    
    --secondary-color: rgba(255, 255, 255, 0.7);
    --text-main: #0f172a;
    --text-muted: #64748b;
    --bg-body: #fafaf9; /* Warm off-white */
    --bg-card: rgba(255, 255, 255, 0.85);
    --border-color: rgba(226, 232, 240, 0.8);
    --success: #138808;
    --error: #ef4444;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --sidebar-width: 280px;
    
    /* Shadows & Glassmorphism */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-glow: 0 0 15px rgba(0, 0, 128, 0.2);
    --glass-blur: blur(12px);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --primary-color: #6366f1; /* Indigo 500 */
    --primary-hover: #818cf8;
    
    --saffron: #fbbf24; /* Amber 400 */
    --green: #34d399; /* Emerald 400 */
    
    --secondary-color: rgba(30, 41, 59, 0.5);
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --bg-body: #0b0e14; /* Deep Navy Black */
    --bg-card: rgba(17, 24, 39, 0.8);
    --border-color: rgba(255, 255, 255, 0.08);
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.5);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.6);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.2);
    --glass-blur: blur(16px);
}

/* Theme transitions */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.6;
    transition: background-color var(--transition), color var(--transition);
    overflow-x: hidden;
}

/* Premium Background Decorators (Tricolor) */
.bg-shape {
    position: fixed;
    border-radius: 50%;
    filter: blur(90px);
    z-index: -1;
    opacity: 0.15;
    animation: float 25s infinite alternate ease-in-out;
}

.bg-shape-saffron {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--saffron) 0%, transparent 70%);
    top: -150px;
    left: -100px;
}

.bg-shape-green {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--green) 0%, transparent 70%);
    bottom: -200px;
    right: -100px;
    animation-delay: -10s;
}

.bg-shape-navy {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -5s;
    opacity: 0.08;
}

/* Ashok Chakra Watermark */
.ashok-chakra-bg {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    opacity: 0.03;
    z-index: -2;
    pointer-events: none;
    animation: spinSlow 120s linear infinite;
    color: var(--primary-color);
}

@keyframes spinSlow {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 50px) scale(1.1); }
}

[data-theme="dark"] .bg-shape { opacity: 0.12; }
[data-theme="dark"] .ashok-chakra-bg { opacity: 0.05; }

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--tricolor-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Glassmorphism Panel Utility */
.glass-panel {
    background-color: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .glass-panel {
    background-color: rgba(15, 23, 42, 0.75);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition);
    z-index: 100;
    box-shadow: var(--shadow-lg);
}

.sidebar-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    max-width: 100%;
}

.logo h1 {
    font-size: 1.35rem;
    font-weight: 800;
    margin: 0;
    background: var(--tricolor-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.1;
    display: flex;
    flex-direction: column;
}

.logo h1 span {
    font-weight: 500;
    opacity: 0.85;
    font-size: 0.75em;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.nav-links {
    list-style: none;
    padding: 1.5rem 1rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.85rem 1rem;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 12px;
    transition: var(--transition);
    font-weight: 500;
}

.nav-item svg {
    opacity: 0.7;
    transition: var(--transition);
}

.nav-item:hover {
    background-color: var(--secondary-color);
    color: var(--text-main);
    transform: translateX(5px);
}

.nav-item:hover svg {
    opacity: 1;
    transform: scale(1.1);
    color: var(--primary-color);
}

.nav-item.active {
    background: linear-gradient(135deg, rgba(0, 0, 128, 0.08), rgba(255, 153, 51, 0.05));
    color: var(--primary-color);
    font-weight: 600;
    border-left: 3px solid var(--saffron);
}

[data-theme="dark"] .nav-item.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(251, 191, 36, 0.08));
    color: var(--primary-hover);
    border-left: 3px solid var(--saffron);
}

.sidebar-footer {
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--border-color);
}

.toggle-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Switch Toggle Premium */
.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

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

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #cbd5e1;
    transition: .4s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] .slider { background-color: #334155; }

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

input:checked + .slider {
    background: var(--tricolor-gradient);
}

input:checked + .slider:before {
    transform: translateX(20px);
}

.slider.round { border-radius: 24px; }
.slider.round:before { border-radius: 50%; }

/* Main Content */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    position: relative;
}

.top-header {
    padding: 1.25rem 2.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: var(--shadow-sm);
}

.header-title h2 {
    margin: 0;
    font-size: 1.5rem;
}

.content-wrapper {
    padding: 2.5rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.view-section {
    display: none;
    opacity: 0;
    transform: translateY(15px) scale(0.98);
    transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.view-section.active {
    display: block;
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Utility Classes */
.hidden { display: none !important; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }

/* Premium Buttons */
.btn {
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-family: var(--font-body);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-lg {
    padding: 0.8rem 1.5rem;
    font-size: 1.05rem;
    border-radius: 10px;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    box-shadow: 0 4px 6px rgba(0, 0, 128, 0.2);
}

[data-theme="dark"] .btn-primary {
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 128, 0.3);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: rgba(0, 0, 128, 0.05);
    transform: translateY(-2px);
}

[data-theme="dark"] .btn-outline:hover { background-color: rgba(79, 70, 229, 0.1); }

.btn-icon {
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background-color: var(--secondary-color);
}

/* Premium Cards */
.card {
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

/* Inputs */
.text-input, .select-input {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-body);
    color: var(--text-main);
    font-family: var(--font-body);
    width: 100%;
    transition: var(--transition);
    font-size: 0.95rem;
}

.text-input:focus, .select-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 0, 128, 0.1);
}

[data-theme="dark"] .text-input:focus, [data-theme="dark"] .select-input:focus {
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    background-color: var(--saffron-light);
    color: #c2410c; /* Darker saffron for text legibility */
}

[data-theme="dark"] .badge {
    color: var(--saffron);
}

.badge-outline {
    background-color: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

/* Responsive Utilities */
.mobile-only { display: none; }
.mobile-only-hide { display: block; }

@media (max-width: 768px) {
    .mobile-only { display: block !important; }
    .mobile-only-hide { display: none !important; }
    
    .app-container {
        flex-direction: column;
    }

    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        width: 80%;
        max-width: 300px;
        transform: translateX(-100%);
        box-shadow: 20px 0 50px rgba(0,0,0,0.3);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    /* Overlay when sidebar is open */
    .sidebar-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.5);
        backdrop-filter: blur(4px);
        z-index: 90;
        display: none;
    }

    .sidebar.open + .sidebar-overlay {
        display: block;
    }

    .main-content {
        height: 100dvh;
    }

    .content-wrapper { 
        padding: 1rem; 
        padding-bottom: 4rem; /* Space for mobile navigation if needed */
    }

    .top-header { 
        padding: 0.75rem 1rem; 
        position: sticky;
        top: 0;
    }
    
    .hero-section { margin-bottom: 2rem; padding: 1rem 0; }
    .hero-section h1 { font-size: 1.8rem; letter-spacing: -0.03em; }
    .hero-subtitle { font-size: 0.95rem; }

    /* Interactive Elements */
    .btn {
        min-height: 44px; /* Better touch target */
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .chat-container {
        height: calc(100dvh - 140px);
    }

    .chat-messages {
        padding: 1rem;
    }

    .msg-bubble {
        max-width: 90%;
    }

    .google-map-placeholder {
        height: 300px;
    }

    /* Fix for wide components */
    .evm-machine, .vvpat-machine {
        width: 100%;
        max-width: 100%;
        padding: 1rem;
        margin-top: 1rem;
    }

    .stepper {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .stepper::before {
        display: none;
    }

    .step {
        width: 100%;
        text-align: center;
    }
}

/* Utils */
.spin {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    100% { transform: rotate(360deg); }
}