:root {
    --bg-primary: #09090b;
    --bg-secondary: #121215;
    --bg-card: #18181b;
    --border-color: #27272a;
    --text-main: #f4f4f5;
    --text-muted: #a1a1aa;
    --accent-gold: #D4AF37;
    --accent-gold-hover: #C9A227;
    --accent-gold-soft: rgba(212, 175, 55, 0.12);
    --sidebar-width: 260px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --border-color: #e2e8f0;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --accent-gold: #B8860B;
    --accent-gold-hover: #C9A227;
    --accent-gold-soft: rgba(184, 134, 11, 0.1);
}

body {
    background-color: var(--bg-primary);
    color: var(--text-main);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

.app-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styling */
.app-sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
}

.sidebar-header {
    padding: 20px;
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: -0.5px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-brand-icon {
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-hover));
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #000;
    font-weight: 900;
}

.sidebar-menu {
    padding: 15px 10px;
    list-style: none;
    margin: 0;
    flex-grow: 1;
}

.nav-item-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.nav-item-link:hover, .nav-item-link.active {
    color: var(--text-main);
    background-color: var(--accent-gold-soft);
}

.nav-item-link.active {
    border-left: 3px solid var(--accent-gold);
    color: var(--accent-gold);
}

/* Header & Main Content Area */
.app-main {
    margin-left: var(--sidebar-width);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.app-topbar {
    height: 65px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
}

.content-container {
    padding: 30px;
}

/* Metric Cards */
.card-dashboard {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.card-dashboard:hover {
    border-color: var(--accent-gold);
}

.metric-title {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    margin-top: 8px;
    letter-spacing: -1px;
}

/* SaaS Gold Buttons */
.btn-gold {
    background-color: var(--accent-gold);
    color: #000000;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    padding: 8px 18px;
    transition: background-color 0.2s ease;
}

.btn-gold:hover {
    background-color: var(--accent-gold-hover);
    color: #000000;
}

/* Modern Tables */
.table-custom {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.table-custom th {
    background-color: var(--bg-secondary);
    color: var(--text-muted);
    padding: 12px 16px;
    font-size: 0.8rem;
    text-transform: uppercase;
    border-bottom: 1px solid var(--border-color);
}

.table-custom td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
    font-size: 0.9rem;
}

/* Toast System */
.toast-container-custom {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
}