:root {
    /* Primary Colors - CIAM Blue */
    --primary-h: 220;
    --primary-s: 70%;
    --primary-l: 50%;
    --primary: hsl(var(--primary-h), var(--primary-s), var(--primary-l));
    --primary-hover: hsl(var(--primary-h), var(--primary-s), calc(var(--primary-l) - 10%));

    /* Backgrounds */
    --bg-main: #f8fafc;
    --bg-sidebar: #ffffff;
    --bg-card: #ffffff;

    /* Text */
    --text-main: #1e293b;
    --text-muted: #64748b;
    --text-on-primary: #ffffff;

    /* Borders & Accents */
    --border-color: rgba(226, 232, 240, 0.8);
    --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);

    /* Radius */
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
}

[data-theme="dark"] {
    --bg-main: #0f172a;
    --bg-sidebar: rgba(30, 41, 59, 0.7);
    --bg-card: rgba(30, 41, 59, 0.5);
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: rgba(51, 65, 85, 0.5);
}

body {
    margin: 0;
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    height: 100vh;
    overflow: hidden;
}

/* Hard-disable any background patterns that may bleed through in dark mode */
html, body {
    background-image: none !important;
}

html.dark, html.dark body {
    background-color: #0a0a0a !important;
    background-image: none !important;
}

html.dark main,
html.dark .flex.h-screen.w-screen {
    background-image: none !important;
}

/* Smooth theme toggle transitions */
html.theme-transition *,
html.theme-transition body {
    transition: background-color 600ms ease, color 600ms ease, border-color 600ms ease;
}

/* Layout Container */
.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Sidebar Styling - Glassmorphism */
.sidebar {
    width: 280px;
    background: var(--bg-sidebar);
    backdrop-filter: blur(12px);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-header {
    display: flex;
    items-center: center;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
    padding: 0 0.5rem;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.nav-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: var(--text-muted);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    font-weight: 500;
}

.nav-link:hover {
    background: rgba(var(--primary-h), var(--primary-s), var(--primary-l), 0.1);
    color: var(--primary);
}

.nav-link.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 12px rgba(var(--primary-h), var(--primary-s), var(--primary-l), 0.25);
}

/* Main Content Area */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
    position: relative;
}

/* Header/Top Bar */
.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.search-bar {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.5rem 1rem;
    width: 300px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.search-bar input {
    border: none;
    background: transparent;
    outline: none;
    color: var(--text-main);
    width: 100%;
}

/* Cards & Components */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn {
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: 0 4px 12px rgba(var(--primary-h), var(--primary-s), var(--primary-l), 0.3);
}

/* Auth Pages (Login/Register) */
.auth-wrapper {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at top left, rgba(var(--primary-h), var(--primary-s), var(--primary-l), 0.05), transparent),
        radial-gradient(circle at bottom right, rgba(139, 92, 246, 0.05), transparent);
}

.auth-card {
    width: 100%;
    max-width: 420px;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.4s ease forwards;
}

.toast-container {
    position: fixed;
    inset-block-start: 1.5rem;
    inset-inline-end: 1.5rem;
    z-index: 50;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.toast {
    min-width: 260px;
    max-width: 360px;
    padding: 0.9rem 1rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    box-shadow: 0 18px 45px rgba(15, 23, 42, 0.18);
    border: 1px solid var(--border-color);
    animation: fadeIn 0.25s ease-out forwards;
}

.toast-success {
    background: rgba(16, 185, 129, 0.09);
    color: rgb(16, 185, 129);
    border-color: rgba(16, 185, 129, 0.4);
}

.toast-error {
    background: rgba(239, 68, 68, 0.09);
    color: rgb(239, 68, 68);
    border-color: rgba(239, 68, 68, 0.4);
}

.toast-hide {
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.25s ease-out, transform 0.25s ease-out;
}

/* Theme-aware scrollbars */
:root {
    --scrollbar-track: #edf2f7;
    --scrollbar-thumb: #94a3b8;
    --scrollbar-thumb-hover: #64748b;

    --nav-scrollbar-track: #f1f5f9;
    --nav-scrollbar-thumb: #cbd5e1;
    --nav-scrollbar-thumb-hover: #94a3b8;
}

html.dark {
    --scrollbar-track: #0f172a;
    --scrollbar-thumb: #334155;
    --scrollbar-thumb-hover: #475569;

    --nav-scrollbar-track: #0b1220;
    --nav-scrollbar-thumb: #334155;
    --nav-scrollbar-thumb-hover: #475569;
}

.page-scrollbar,
.nav-scrollbar {
    scrollbar-gutter: stable;
    scrollbar-width: thin;
}

.page-scrollbar {
    scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

.nav-scrollbar {
    scrollbar-color: var(--nav-scrollbar-thumb) var(--nav-scrollbar-track);
}

.page-scrollbar::-webkit-scrollbar,
.nav-scrollbar::-webkit-scrollbar {
    width: 11px;
    height: 11px;
}

.page-scrollbar::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
    border-radius: 9999px;
}

.nav-scrollbar::-webkit-scrollbar-track {
    background: var(--nav-scrollbar-track);
    border-radius: 9999px;
}

.page-scrollbar::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--scrollbar-thumb), color-mix(in srgb, var(--scrollbar-thumb) 82%, #000 18%));
    border: 2px solid var(--scrollbar-track);
    border-radius: 9999px;
}

.nav-scrollbar::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--nav-scrollbar-thumb), color-mix(in srgb, var(--nav-scrollbar-thumb) 82%, #000 18%));
    border: 2px solid var(--nav-scrollbar-track);
    border-radius: 9999px;
}

.page-scrollbar::-webkit-scrollbar-thumb:hover {
    background: var(--scrollbar-thumb-hover);
}

.nav-scrollbar::-webkit-scrollbar-thumb:hover {
    background: var(--nav-scrollbar-thumb-hover);
}