:root {
    --bg: #f6f6f6;
    --panel: #ffffff;
    --muted: #9aa0a6;
    --accent: #e9eef0;
    --green: #28a745;
    --card-radius: 12px;
    --shadow: 0 6px 18px rgba(20, 20, 20, 0.06);
    font-family: "Inter", sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: #111827;
    font-size: 15px;
}

.app {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
    gap: 32px;
}

/* SIDEBAR */
.sidebar {
    background: #f3f6f6;
    padding: 28px 18px;
    border-right: 1px solid rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.brand {
    font-weight: 700;
    color: #1f6aa5;
    font-size: 22px;
    margin-bottom: 26px;
}

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

.nav a {
    text-decoration: none;
    color: #374151;
    padding: 12px 14px;
    border-radius: 10px;
    font-weight: 500;
    transition: background 0.2s;
}

.nav a:hover {
    background: #eaeaea;
}

.nav a.active {
    background: #e9eef0;
    color: #0f172a;
    font-weight: 600;
}

.logout {
    color: #e04b4b;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    padding: 10px 12px;
}

/* MAIN AREA */
.main {
    padding: 28px 36px;
}

.title {
    font-size: 34px;
    font-weight: 800;
    margin: 0 0 6px 0;
}

.subtitle {
    color: var(--muted);
    margin: 0;
    font-weight: 500;
}

/* Stats Grid */
.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin: 18px 0 26px;
}

.stat {
    background: var(--panel);
    padding: 22px;
    border-radius: var(--card-radius);
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stat .label {
    color: var(--muted);
    font-weight: 600;
}

.stat .value {
    font-size: 28px;
    font-weight: 800;
}

.stat .trend {
    color: var(--green);
    font-weight: 700;
    font-size: 13px;
}

.stat .icon {
    font-size: 26px;
    background: #fff7ea;
    padding: 10px;
    border-radius: 10px;
}

/* Cards */
.content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 22px;
}

.card {
    background: var(--panel);
    border-radius: var(--card-radius);
    padding: 18px;
    box-shadow: var(--shadow);
}

.card h3 {
    margin: 0 0 14px 0;
    font-size: 22px;
    font-weight: 800;
}

/* Bookings */
.bookings-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.booking {
    padding: 14px;
    border-radius: 10px;
    border: 1px solid rgba(10, 10, 10, 0.04);
    background: #fff;
    display: flex;
    justify-content: space-between;
}

.name {
    font-weight: 700;
}

.meta {
    color: var(--muted);
    font-weight: 600;
    font-size: 13px;
}

.status .label {
    font-weight: 700;
}

.status .date {
    color: var(--muted);
    font-size: 13px;
}

/* Placeholder */
.chart-placeholder {
    height: 320px;
    border-radius: 10px;
    border: 1px dashed rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted);
    font-weight: 600;
    background: #fafafa;
}