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

:root {
    --primary: #25d366;
    --primary-hover: #1ed760;
    --secondary: #075e54;
    --dark: #111827;
    --light: #f9fafb;
    --white: #ffffff;
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --danger: #ef4444;
    --success: #10b981;
    --warning: #f59e0b;
    --border: #e5e7eb;
    --radius-lg: 16px;
    --radius-md: 12px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: #f3f4f6;
    margin: 0;
    color: var(--text-main);
}

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

.sidebar {
    width: 280px;
    background: var(--dark);
    color: white;
    padding: 2rem 1.5rem;
    position: sticky;
    top: 0;
    height: 100vh;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
    padding: 2.5rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* Sidebar Navigation */
.sidebar-brand { margin-bottom: 3rem; display: flex; align-items: center; gap: 12px; }
.sidebar-brand i { font-size: 2rem; color: var(--primary); }
.sidebar-brand h3 { margin: 0; font-size: 1.25rem; letter-spacing: -0.5px; }

.nav-links { list-style: none; padding: 0; margin: 0; flex: 1; }
.nav-links li { margin-bottom: 0.5rem; }
.nav-links a {
    color: #9ca3af;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    transition: all 0.2s;
    font-weight: 500;
}
.nav-links a:hover, .nav-links a.active {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}
.nav-links a.active { color: var(--primary); }

/* Components: Cards */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    margin-bottom: 1.5rem;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

/* Tables Premium */
.table-container { overflow-x: auto; border-radius: var(--radius-md); }
table { width: 100%; border-collapse: collapse; text-align: left; }
th { background: var(--light); padding: 12px 16px; font-weight: 600; font-size: 0.85rem; text-transform: uppercase; color: var(--text-muted); border-bottom: 2px solid var(--border); }
td { padding: 16px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr:hover td { background: #f9fafb; }

/* Badges */
.badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.badge-success { background: #dcfce7; color: #15803d; }
.badge-error { background: #fee2e2; color: #b91c1c; }
.badge-info { background: #e0f2fe; color: #0369a1; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    font-size: 0.95rem;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-1px); }
.btn-danger { background: #fee2e2; color: #ef4444; }
.btn-danger:hover { background: #fecaca; }

/* Forms */
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-weight: 600; font-size: 0.9rem; }
input, select, textarea {
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    background: #fdfdfd;
    transition: all 0.2s;
    font-family: inherit;
    box-sizing: border-box;
}
input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 211, 102, 0.1); }

/* Stats Grid */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.5rem; margin-bottom: 2.5rem; }
.stat-card { background: white; padding: 1.5rem; border-radius: var(--radius-lg); display: flex; align-items: center; gap: 1rem; border: 1px solid var(--border); }
.stat-icon { width: 56px; height: 56px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; }
.stat-info h4 { margin: 0; font-size: 0.9rem; color: var(--text-muted); }
.stat-info .stat-value { font-size: 1.5rem; font-weight: 700; display: block; margin-top: 4px; }

/* Modals */
.modal { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5); backdrop-filter: blur(4px); z-index: 1000; align-items: center; justify-content: center; padding: 1rem; }
.modal-content { background: white; border-radius: var(--radius-lg); width: 100%; max-width: 500px; padding: 2rem; position: relative; }
.close { position: absolute; top: 1.5rem; right: 1.5rem; cursor: pointer; font-size: 1.5rem; color: var(--text-muted); }