/* ============================================================
   Layout - Sistema de Encuestas Encuestate
   layout.css — Sidebar, Header, Main Content Layout
   ============================================================ */

/* ── App Layout Container ────────────────────────────── */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* ── Sidebar ─────────────────────────────────────────── */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: var(--text-inverse);
    display: flex;
    flex-direction: column;
    z-index: var(--z-fixed);
    transition: width var(--transition-base), transform var(--transition-base);
    overflow: hidden;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.15);
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

/* Sidebar Brand */
.sidebar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-5) var(--space-5);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    min-height: var(--header-height);
    flex-shrink: 0;
}

.sidebar-brand-logo {
    width: 36px;
    height: 36px;
    background: var(--color-accent);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-extrabold);
    color: var(--color-primary-dark);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(255, 215, 0, 0.3);
}

.sidebar-brand-text {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    white-space: nowrap;
    overflow: hidden;
    transition: opacity var(--transition-fast);
}

.sidebar.collapsed .sidebar-brand-text {
    opacity: 0;
    width: 0;
}

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    padding: var(--space-4) var(--space-3);
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-section-title {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.4);
    padding: var(--space-3) var(--space-3) var(--space-2);
    white-space: nowrap;
    overflow: hidden;
}

.sidebar.collapsed .sidebar-section-title {
    text-align: center;
    font-size: 0;
}

.sidebar.collapsed .sidebar-section-title::after {
    content: '•••';
    font-size: var(--font-size-xs);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-3);
    color: rgba(255, 255, 255, 0.75);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    margin-bottom: var(--space-1);
    white-space: nowrap;
    overflow: hidden;
    text-decoration: none;
    position: relative;
}

.sidebar-link:hover {
    background-color: var(--surface-sidebar-hover);
    color: var(--text-inverse);
    transform: translateX(2px);
}

.sidebar-link.active {
    background-color: rgba(255, 215, 0, 0.15);
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
}

.sidebar-link.active::before {
    content: '';
    position: absolute;
    left: -12px;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 60%;
    background: var(--color-accent);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.sidebar-link-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
}

.sidebar-link-text {
    transition: opacity var(--transition-fast);
}

.sidebar.collapsed .sidebar-link-text {
    opacity: 0;
    width: 0;
}

.sidebar.collapsed .sidebar-link {
    justify-content: center;
    padding: var(--space-3);
}

/* Sidebar Footer */
.sidebar-footer {
    padding: var(--space-4) var(--space-3);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.sidebar-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--color-accent);
    color: var(--color-primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
    flex-shrink: 0;
}

.sidebar-user-info {
    overflow: hidden;
    transition: opacity var(--transition-fast);
}

.sidebar.collapsed .sidebar-user-info {
    opacity: 0;
    width: 0;
}

.sidebar-user-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-role {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.5);
    white-space: nowrap;
}

/* Collapse Toggle Button */
.sidebar-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: var(--space-3);
    color: rgba(255, 255, 255, 0.5);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    background: none;
    margin-top: var(--space-2);
}

.sidebar-toggle:hover {
    color: var(--text-inverse);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
}

.sidebar-toggle-icon {
    transition: transform var(--transition-base);
    font-size: var(--font-size-lg);
}

.sidebar.collapsed .sidebar-toggle-icon {
    transform: rotate(180deg);
}

/* ── Mobile Header (Top Bar) ─────────────────────────── */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--color-primary);
    color: var(--text-inverse);
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-4);
    z-index: var(--z-fixed);
    box-shadow: var(--shadow-md);
}

.mobile-header-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
}

.hamburger-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--text-inverse);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
    border: none;
    background: none;
    cursor: pointer;
    font-size: var(--font-size-xl);
}

.hamburger-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Mobile Overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background-color: var(--surface-overlay);
    z-index: calc(var(--z-fixed) - 1);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* ── Main Content ────────────────────────────────────── */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition-base);
    min-height: 100vh;
}

.sidebar.collapsed~.main-content {
    margin-left: var(--sidebar-collapsed);
}

.content-wrapper {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: var(--space-8);
}

/* Page Header */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-8);
    flex-wrap: wrap;
    gap: var(--space-4);
}

.page-header h1 {
    margin-bottom: 0;
}

.page-header-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-top: var(--space-1);
}

.page-header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* ── Responsive: Tablet (≤1024px) ────────────────────── */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width);
        box-shadow: none;
    }

    .sidebar.mobile-open {
        transform: translateX(0);
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
    }

    .sidebar.collapsed {
        width: var(--sidebar-width);
    }

    .sidebar.collapsed .sidebar-brand-text,
    .sidebar.collapsed .sidebar-link-text,
    .sidebar.collapsed .sidebar-user-info {
        opacity: 1;
        width: auto;
    }

    .sidebar.collapsed .sidebar-link {
        justify-content: flex-start;
    }

    .sidebar.collapsed .sidebar-section-title {
        font-size: var(--font-size-xs);
        text-align: left;
    }

    .sidebar.collapsed .sidebar-section-title::after {
        content: none;
    }

    .sidebar.collapsed .sidebar-toggle-icon {
        transform: none;
    }

    .mobile-header {
        display: flex;
    }

    .main-content {
        margin-left: 0;
        padding-top: var(--header-height);
    }

    .sidebar.collapsed~.main-content {
        margin-left: 0;
    }

    .sidebar-toggle {
        display: none;
    }

    .content-wrapper {
        padding: var(--space-6);
    }
}

/* ── Responsive: Mobile (≤768px) ─────────────────────── */
@media (max-width: 768px) {
    .content-wrapper {
        padding: var(--space-4);
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .page-header-actions {
        width: 100%;
    }

    .page-header-actions .btn {
        flex: 1;
    }
}