:root {
    --bg-dark: #0f1014;
    --bg-card: #18191f;
    --bg-lighter: #22232a;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --primary-color: #6366f1;
    /* Indigo-500 type */
    --primary-hover: #4f46e5;
    --accent-color: #ec4899;
    /* Pink-500 */
    --success: #10b981;
    --danger: #ef4444;
    --border-color: #2d2d35;
    --radius-lg: 16px;
    --radius-md: 10px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --font-main: 'Outfit', sans-serif;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-main);
    height: 100vh;
    overflow: hidden;
}

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

/* Layout */
.app-container {
    display: flex;
    height: 100%;
}

.sidebar {
    width: 260px;
    background-color: var(--bg-card);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 20px;
}

.brand {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-menu {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all 0.2s ease;
    font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.1) 0%, transparent 100%);
    color: var(--primary-color);
    border-left: 3px solid var(--primary-color);
}

.nav-link i {
    width: 20px;
    text-align: center;
}

.user-menu {
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.main-content {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.top-header {
    background-color: var(--bg-card);
    /* or transparent */
    padding: 20px 40px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.page-title {
    font-size: 24px;
    font-weight: 600;
}

.content-wrapper {
    padding: 40px;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

/* Components */
.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: 0.2s;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
}

.w-100 {
    width: 100%;
}

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow);
}

/* Typography specifics */
h1,
h2,
h3 {
    margin-bottom: 1rem;
}

p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9em;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: white;
    font-family: inherit;
    transition: 0.2s;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}