* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f0f4f8;
    color: #1a1a2e;
}

.login-container {
    max-width: 400px;
    margin: 100px auto;
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.login-header { text-align: center; margin-bottom: 30px; }
.login-header h1 { color: #1565c0; font-size: 1.5em; }
.login-header p { color: #546e7a; margin-top: 5px; }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 5px; color: #37474f; font-weight: 500; }
.form-group input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #b0bec5;
    border-radius: 4px;
    font-size: 14px;
}

.login-btn {
    width: 100%;
    padding: 12px;
    background: #1565c0;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
}

.login-btn:hover { background: #0d47a1; }

.clinic-info { text-align: center; margin-top: 20px; color: #78909c; font-size: 13px; }

.error-message {
    background: #ffebee;
    color: #c62828;
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 20px;
    text-align: center;
}

.top-nav {
    background: #1565c0;
    color: white;
    padding: 12px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand { font-weight: 600; font-size: 16px; }
.nav-links a { color: rgba(255,255,255,0.8); text-decoration: none; margin-left: 20px; }
.nav-links a.active { color: white; border-bottom: 2px solid white; }
.nav-links a:hover { color: white; }
.nav-user { color: rgba(255,255,255,0.6); margin-left: 20px; }

.content { max-width: 1200px; margin: 24px auto; padding: 0 24px; }
.content h2 { margin-bottom: 16px; color: #1a1a2e; }
.content h3 { margin: 24px 0 12px; color: #37474f; }

.data-table { width: 100%; border-collapse: collapse; background: white; border-radius: 4px; overflow: hidden; box-shadow: 0 1px 4px rgba(0,0,0,0.08); }
.data-table th { background: #e3f2fd; padding: 10px 14px; text-align: left; font-weight: 600; color: #1565c0; }
.data-table td { padding: 10px 14px; border-top: 1px solid #eceff1; }
.data-table tr:hover { background: #f5f5f5; }
.data-table a { color: #1565c0; text-decoration: none; }

.patient-info { background: white; padding: 20px; border-radius: 4px; margin-bottom: 24px; box-shadow: 0 1px 4px rgba(0,0,0,0.08); }
.patient-info p { margin-bottom: 8px; }

.back-link { display: inline-block; margin-top: 20px; color: #1565c0; text-decoration: none; }