@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root, [data-theme="light"] {
    --bg-color: #F8FAFC;
    --surface: #ffffff;
    --surface-hover: #F1F5F9;
    --border: #E2E8F0;
    --primary: #0891B2;
    --accent: #0ea5e9;
    --success: #22C55E;
    --warning: #F59E0B;
    --danger: #EF4444;
    --text-main: #0F172A;
    --text-muted: #475569;
}

[data-theme="dark"] {
    --bg-color: #0F172A;
    --surface: #1E293B;
    --surface-hover: #334155;
    --border: #334155;
    --primary: #0891B2;
    --accent: #38bdf8;
    --success: #22C55E;
    --warning: #F59E0B;
    --danger: #EF4444;
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    overflow-x: hidden;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--bg-color);
    border-right: 1px solid var(--border);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.02em;
}

.nav-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.nav-item {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    color: var(--text-muted);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.2s ease;
    font-size: 0.95rem;
    font-weight: 500;
}

.nav-item:hover {
    background: var(--surface);
    color: var(--text-main);
}

.nav-item.active {
    background: var(--surface);
    color: var(--text-main);
    font-weight: 600;
}

/* Main Content */
.main-content {
    margin-left: 280px;
    flex: 1;
    padding: 2.5rem 4rem;
    background: var(--bg-color);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 3rem;
}

.header-title h1 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.03em;
}

.header-title p {
    color: var(--text-muted);
    font-size: 1rem;
    text-wrap: pretty;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--surface);
    padding: 0.5rem 1.25rem;
    border-radius: 99px;
    border: 1px solid var(--border);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background 0.2s ease;
}

.user-profile:hover {
    background: var(--surface-hover);
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stat-title {
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
}

.stat-value {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.02em;
    display: flex;
    align-items: baseline;
    gap: 0.25rem;
}

.stat-value span {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-muted);
}

.stat-trend {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    margin-top: 0.5rem;
}

.trend-up { color: var(--success); }
.trend-down { color: var(--danger); }

/* Charts & AI Section */
.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
}

.panel {
    background: var(--bg-color);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
}

.panel-header {
    margin-bottom: 2rem;
}

.panel-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.panel-title i {
    font-size: 1rem;
    color: var(--text-muted);
}

/* Recommendations */
.ai-recommendations {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.ai-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem;
}

.ai-card-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.ai-badge {
    padding: 0.125rem 0.5rem;
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.conservative .ai-badge { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.realistic .ai-badge { background: rgba(59, 130, 246, 0.1); color: var(--primary); }
.aggressive .ai-badge { background: rgba(245, 158, 11, 0.1); color: var(--warning); }

.ai-card-title {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-main);
}

.ai-card-text {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    text-wrap: pretty;
}

/* Chart Canvas Container */
.chart-container {
    position: relative;
    height: 350px;
    width: 100%;
}

/* Responsive */
@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    .main-content {
        padding: 1.5rem;
    }
}