/* ImpactMCI Instructor Dashboard Styles */
/* PC-first design with ImpactMCI branding */

:root {
    --primary-color: #d32f2f;
    --primary-dark: #9a0007;
    --primary-light: #ff6659;
    --secondary-color: #424242;
    --background: #f5f5f5;
    --surface: #ffffff;
    --error: #d32f2f;
    --success: #388e3c;
    --warning: #f57c00;
    --text-primary: #212121;
    --text-secondary: #757575;
    --border: #e0e0e0;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
}

/* Loading */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    font-size: 1.2rem;
    color: var(--text-secondary);
}

/* Login Screen */
.login-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
}

.login-container {
    background: var(--surface);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 450px;
}

.logo {
    text-align: center;
    margin-bottom: 2rem;
}

.logo h1 {
    color: var(--primary-color);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.logo h2 {
    color: var(--text-secondary);
    font-size: 1.2rem;
    font-weight: 400;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
}

.form-group input {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.mfa-message {
    text-align: center;
    color: var(--text-secondary);
    padding: 1rem;
    background-color: var(--background);
    border-radius: 6px;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(211, 47, 47, 0.3);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background-color: #303030;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.error-message {
    color: var(--error);
    background-color: #ffebee;
    padding: 0.75rem;
    border-radius: 6px;
    text-align: center;
    font-size: 0.9rem;
}

/* Dashboard */
.dashboard {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: var(--surface);
    border-bottom: 2px solid var(--border);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.header-left h1 {
    color: var(--primary-color);
    font-size: 1.8rem;
}

.user-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-left: 1rem;
}

.dashboard-content {
    display: flex;
    flex: 1;
}

.sidebar {
    width: 250px;
    background-color: var(--surface);
    border-right: 1px solid var(--border);
    padding: 2rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sidebar button {
    padding: 1rem 2rem;
    background: none;
    border: none;
    text-align: left;
    font-size: 1rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

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

.sidebar button.active {
    background-color: #ffebee;
    border-left-color: var(--primary-color);
    color: var(--primary-color);
    font-weight: 500;
}

.main-content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

/* Home View */
.home-view h2 {
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.card {
    background-color: var(--surface);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Sessions View */
.sessions-view h2 {
    margin-bottom: 2rem;
}

.sessions-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.session-card {
    background-color: var(--surface);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.session-card h3 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.session-card p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.status-setup {
    color: var(--warning);
    font-weight: 500;
}

.status-active {
    color: var(--success);
    font-weight: 500;
}

.status-completed {
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    .dashboard-content {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        flex-direction: row;
        overflow-x: auto;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
    
    .sidebar button {
        white-space: nowrap;
        border-left: none;
        border-bottom: 3px solid transparent;
    }
    
    .sidebar button.active {
        border-left: none;
        border-bottom-color: var(--primary-color);
    }
}