/* === LAYOUT: Screens, Sidebar, Content === */
.screen {
    display: none;
}

.screen.active {
    display: flex;
    min-height: 100vh;
}

/* Login */
#login-screen {
    justify-content: center;
    align-items: center;
    background: var(--bg);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 1rem;
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
}

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

.login-logo {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

.login-header h1 {
    font-size: 1.35rem;
    font-weight: 700;
}

.login-subtitle {
    color: var(--text-secondary);
    margin-top: 0.25rem;
    font-size: 0.9rem;
}

.error-message {
    color: var(--red);
    font-size: 0.85rem;
    margin-top: 1rem;
    text-align: center;
}

/* Sidebar */
#sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform var(--transition);
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
}

.sidebar-logo {
    font-size: 1.4rem;
}

.sidebar-title {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--text);
    letter-spacing: -0.01em;
}

.sidebar-nav {
    list-style: none;
    padding: 0.75rem 0.5rem;
    flex: 1;
}

.sidebar-nav li {
    margin-bottom: 2px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 1rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: all var(--transition);
    font-size: 0.9rem;
    font-weight: 450;
    cursor: pointer;
    text-decoration: none;
}

.nav-link:hover {
    background: var(--bg-hover);
    color: var(--text);
}

.nav-link.active {
    background: var(--accent-light);
    color: var(--accent);
    font-weight: 600;
}

.nav-icon {
    font-size: 1.05rem;
    width: 24px;
    text-align: center;
}

.sidebar-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.user-name-text {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text);
}

.user-role-badge {
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 10px;
    display: inline-block;
    width: fit-content;
    font-weight: 500;
}

.role-admin {
    background: var(--accent-light);
    color: var(--accent);
}

.role-editor {
    background: var(--green-bg);
    color: var(--green);
}

.role-viewer {
    background: var(--blue-bg);
    color: var(--blue);
}

/* Main content */
#content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 2rem 2.5rem;
    max-width: 1200px;
}

.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.page-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.page-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.modal-overlay.show {
    opacity: 1;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: 90%;
    max-width: 700px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    transform: scale(0.96);
    transition: transform 0.2s ease;
}

.modal-overlay.show .modal {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-xs);
    transition: all var(--transition);
}

.modal-close:hover {
    background: var(--bg-hover);
    color: var(--text);
}

.modal-body {
    padding: 1.5rem;
}

/* Toast */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-lg);
    font-size: 0.9rem;
    transform: translateX(120%);
    transition: transform 0.3s ease;
}

.toast.show {
    transform: translateX(0);
}

.toast-success {
    border-left: 3px solid var(--green);
}

.toast-error {
    border-left: 3px solid var(--red);
}

.toast-info {
    border-left: 3px solid var(--accent);
}

/* Responsive */
@media (max-width: 768px) {
    #sidebar {
        transform: translateX(-100%);
    }

    #sidebar.open {
        transform: translateX(0);
    }

    #content {
        margin-left: 0;
        padding: 1rem;
    }
}