body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #1a202c;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0;
    background-color: #f7fafc;
}

header {
    background: #2d3748;
    color: #fff;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

header h1 {
    margin: 0;
    font-size: 1.5rem;
}

.user-info a {
    color: #cbd5e0;
    text-decoration: none;
    margin-left: 1rem;
}

nav {
    background: #4a5568;
    padding: 0.75rem 2rem;
    display: flex;
    gap: 1.5rem;
}

nav a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
}

nav a:hover {
    color: #edf2f7;
}

main {
    padding: 2rem;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.dashboard-card {
    background: #fff;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border: 1px solid #e2e8f0;
}

.dashboard-card h3 {
    margin-top: 0;
    color: #2d3748;
    border-bottom: 2px solid #edf2f7;
    padding-bottom: 0.75rem;
    margin-bottom: 1rem;
}

.dashboard-card ul {
    list-style: none;
    padding: 0;
}

.dashboard-card li {
    margin-bottom: 0.75rem;
}

.dashboard-card a {
    color: #3182ce;
    text-decoration: none;
}

.dashboard-card a:hover {
    text-decoration: underline;
}

.admin-card {
    border-top: 4px solid #e53e3e;
}

.status-card {
    background: #ebf8ff;
    border: 1px solid #bee3f8;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    margin-top: 1.5rem;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #edf2f7;
}

th {
    background-color: #f8fafc;
    font-weight: 600;
    color: #4a5568;
}

/* Login Page */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #2d3748;
}

.login-container {
    background: #fff;
    padding: 2.5rem;
    border-radius: 16px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 25px rgba(0,0,0,0.2);
}

.login-container form input {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 1rem;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    box-sizing: border-box;
}

.login-container button {
    width: 100%;
    padding: 0.75rem;
    background: #3182ce;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
}

input.wide { width: 100%; }
.success { color: #38a169; background: #f0fff4; padding: 1rem; border-radius: 6px; }
.error { color: #e53e3e; background: #fff5f5; padding: 1rem; border-radius: 6px; }
label { display: block; margin-top: 1rem; font-weight: 600; }