/* ===================================
   LAYOUT.CSS - Estructura Principal
   =================================== */

/* Layout Principal */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* ===== SIDEBAR ===== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 1000;
    overflow-y: auto;
    transition: var(--transition);
}

.sidebar-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h2 {
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-header i {
    font-size: 1.75rem;
    background: linear-gradient(45deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-menu {
    list-style: none;
    padding: 1.5rem 0;
}

.sidebar-menu li {
    margin: 0;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
    border-left: 3px solid transparent;
    font-weight: 500;
}

.menu-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-left-color: var(--warning-color);
    transform: translateX(5px);
}

.menu-item.active {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border-left-color: var(--warning-color);
    font-weight: 600;
}

.menu-item i {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
}

/* ===== MAIN CONTENT ===== */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    background: rgba(255, 255, 255, 0.95);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-lg) 0 0 var(--border-radius-lg);
    position: relative;
}

/* ===== HEADER ===== */
.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 2.5rem;
    background: white;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--box-shadow);
    border-radius: var(--border-radius-lg) 0 0 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

#page-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.header-actions .btn {
    white-space: nowrap;
    min-width: auto;
    width: auto;
}

.header-actions .form-select {
    min-width: 180px;
}

.current-date {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== CONTENT SECTIONS ===== */
.section {
    display: none;
    padding: 2.5rem;
    animation: fadeIn 0.5s ease-in-out;
}

.section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== GRIDS ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.content-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

/* ===== MODAL OVERLAY ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay.active .modal {
    transform: translateY(0);
    opacity: 1;
}

.modal {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-lg);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(20px);
    opacity: 0;
    transition: var(--transition);
}