:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a2e;
    --bg-hover: #22223a;
    --border: #2a2a3e;
    --border-light: #3a3a4e;
    --text-primary: #e0e0e8;
    --text-secondary: #8888a0;
    --text-muted: #55556a;
    --accent: #6c5ce7;
    --accent-hover: #7c6cf7;
    --accent-light: rgba(108, 92, 231, 0.15);
    --success: #00b894;
    --warning: #fdcb6e;
    --danger: #e17055;
    --info: #74b9ff;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    min-height: 100vh;
}

img {
    display: block;
    max-width: 100%;
}

svg {
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
}

input,
textarea,
select {
    font-family: inherit;
}

ul,
ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
}

::selection {
    background: var(--accent);
    color: #ffffff;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 260px;
    height: 100vh;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-logo {
    padding: 24px 24px 20px;
    font-size: 26px;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: 4px;
    border-bottom: 1px solid var(--border);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    padding: 12px;
    gap: 2px;
    flex: 1;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.nav-link svg {
    flex-shrink: 0;
    opacity: 0.7;
    transition: opacity 0.15s ease;
    display: block;
}

.nav-link:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-link:hover svg {
    opacity: 1;
}

.nav-link.active {
    background: var(--accent-light);
    color: var(--accent);
}

.nav-link.active svg {
    opacity: 1;
    color: var(--accent);
}

.nav-section {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    padding: 16px 14px 4px;
    text-transform: uppercase;
}

.sidebar-nav {
    overflow-y: auto;
}

.main-content {
    margin-left: 260px;
    padding: 32px;
    min-height: 100vh;
}

.sidebar-toggle {
    display: none;
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 200;
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 90;
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

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

    .sidebar-toggle {
        display: flex;
    }

    .sidebar-overlay.visible {
        display: block;
    }

    .main-content {
        margin-left: 0;
        padding: 24px 16px;
        padding-top: 64px;
    }
}