:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --bg-color: #f3f4f6;
    --card-bg: #ffffff;
    --text-color: #1f2937;
    --border-color: #e5e7eb;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.auth-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    width: 100%;
    max-width: 400px;
}

.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

input[type="text"],
input[type="password"],
textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
}

button.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    width: 100%;
    transition: background-color 0.2s;
}

button.btn-primary:hover {
    background-color: var(--primary-hover);
}

/* Dashboard Specifics */
header {
    background: var(--card-bg);
    padding: 1rem 2rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

.patient-list {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 1rem;
    height: fit-content;
}

.patient-item {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background 0.2s;
}

.patient-item:hover {
    background-color: #f9fafb;
}

.patient-item.active {
    background-color: #eff6ff;
    border-left: 4px solid var(--primary-color);
}

.main-content {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
}

.hidden {
    display: none;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.error-message {
    color: #dc2626;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .dashboard-grid {
        display: block;
        /* Stack vertically */
        margin-top: 1rem;
    }

    .patient-list {
        width: 100%;
        margin-bottom: 1rem;
    }

    .main-content {
        width: 100%;
        padding: 1rem;
        /* On mobile, main content might be hidden initially or overlaid */
        display: none;
        /* Default hidden on mobile if list is shown */
    }

    .main-content.mobile-active {
        display: block;
    }

    .patient-list.mobile-hidden {
        display: none;
    }

    header {
        padding: 1rem;
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}

.mobile-only {
    display: none;
}

@media (max-width: 768px) {
    .mobile-only {
        display: block;
    }

    .desktop-only {
        display: none;
    }
}