/* ============================================================================
   PTV TELECOM - RESPONSIVE DESIGN
   Sistema responsive para mobile, tablet y desktop
   ============================================================================ */

/* === TABLET (768px - 1024px) === */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .action-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .header-center {
        flex: 0.5;
    }
}

/* === MOBILE (max-width: 768px) === */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 100%;
        --header-height: 56px;
        --spacing-6: 1rem;
    }

    /* Layout mobile */
    .app-container {
        grid-template-areas: 
            "header"
            "main";
        grid-template-columns: 1fr;
        grid-template-rows: var(--header-height) 1fr;
    }

    .app-container.sidebar-collapsed {
        grid-template-columns: 1fr;
    }

    /* Header mobile */
    .app-header {
        padding: 0 var(--spacing-4);
    }

    .header-center {
        display: none; /* Ocultar breadcrumb en mobile */
    }

    .logo-container {
        display: none; /* Ocultar logo completo en mobile */
    }

    .header-right {
        gap: var(--spacing-2);
    }

    .user-name {
        display: none; /* Ocultar nombre de usuario en mobile */
    }

    /* Sidebar mobile */
    .sidebar {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height));
        z-index: var(--z-sidebar-mobile);
        transition: left var(--transition-base);
        box-shadow: var(--shadow-4);
    }

    .sidebar.mobile-open {
        left: 0;
    }

    .sidebar-nav {
        padding: var(--spacing-4) var(--spacing-4) var(--spacing-8);
    }

    .nav-link {
        padding: var(--spacing-4);
        font-size: var(--font-size-base);
        border-radius: var(--radius-md);
    }

    .nav-link .material-symbols-outlined {
        font-size: 24px;
    }

    /* Main content mobile */
    .main-content {
        padding: var(--spacing-4);
    }

    .page-header {
        margin-bottom: var(--spacing-6);
    }

    .page-title {
        font-size: var(--font-size-2xl);
    }

    /* Stats grid mobile */
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
        margin-bottom: var(--spacing-6);
    }

    .stat-card {
        padding: var(--spacing-4);
        flex-direction: row;
    }

    .stat-icon {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }

    .stat-number {
        font-size: var(--font-size-xl);
    }

    /* Action grid mobile */
    .action-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-3);
    }

    .action-card {
        padding: var(--spacing-4);
    }

    .action-card .material-symbols-outlined {
        font-size: 24px;
    }

    /* Tables mobile */
    .table-container {
        overflow-x: auto;
        border-radius: var(--radius-lg);
    }

    .data-table {
        min-width: 600px;
    }

    .data-table th,
    .data-table td {
        padding: var(--spacing-3) var(--spacing-4);
        font-size: var(--font-size-sm);
        white-space: nowrap;
    }

    /* Overlay mobile */
    .overlay.mobile-active {
        opacity: 1;
        visibility: visible;
        z-index: 1250; /* Entre sidebar (1300) y header (1200) */
    }

    /* User dropdown mobile */
    .user-dropdown {
        position: fixed;
        top: var(--header-height);
        right: var(--spacing-4);
        left: var(--spacing-4);
        width: auto;
        min-width: auto;
    }
}

/* === MOBILE SMALL (max-width: 480px) === */
@media (max-width: 480px) {
    :root {
        --spacing-6: 0.75rem;
        --spacing-4: 0.75rem;
    }

    .main-content {
        padding: var(--spacing-3);
    }

    .page-title {
        font-size: var(--font-size-xl);
    }

    .stats-grid {
        gap: var(--spacing-3);
    }

    .stat-card {
        padding: var(--spacing-3);
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-3);
    }

    .stat-icon {
        align-self: center;
    }

    .action-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-3);
    }

    .action-card {
        padding: var(--spacing-4);
        flex-direction: row;
        justify-content: flex-start;
        text-align: left;
        gap: var(--spacing-4);
    }

    .action-card .material-symbols-outlined {
        font-size: 24px;
    }

    /* Typography adjustments */
    .page-subtitle {
        font-size: var(--font-size-base);
    }

    .quick-actions h2,
    .recent-section h2 {
        font-size: var(--font-size-lg);
    }
}

/* === MOBILE LANDSCAPE === */
@media (max-width: 768px) and (orientation: landscape) {
    .sidebar {
        width: 320px;
        left: -320px;
    }

    .sidebar.mobile-open {
        left: 0;
    }

    .main-content {
        padding: var(--spacing-4);
    }
}

/* === LARGE DESKTOP (min-width: 1440px) === */
@media (min-width: 1440px) {
    .main-content {
        padding: var(--spacing-8);
    }

    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .action-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .page-title {
        font-size: var(--font-size-4xl);
    }
}

/* === UTILITIES RESPONSIVE === */
.mobile-only {
    display: none;
}

.desktop-only {
    display: block;
}

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

    .desktop-only {
        display: none;
    }

    .mobile-hidden {
        display: none !important;
    }

    .mobile-center {
        text-align: center !important;
    }

    .mobile-full-width {
        width: 100% !important;
    }
}

/* === ACCESSIBILITY === */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .loading-spinner {
        animation: none;
    }
}

/* === HIGH CONTRAST MODE === */
@media (prefers-contrast: high) {
    :root {
        --border-light: #000000;
        --border-medium: #000000;
        --shadow-1: 0 0 0 1px #000000;
        --shadow-2: 0 0 0 2px #000000;
        --shadow-3: 0 0 0 2px #000000;
    }
}

/* === DARK MODE SUPPORT === */
/* Comentado para mantener tema claro corporativo de PTV Telecom */
/*
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1F1F1F;
        --bg-secondary: #121212;
        --bg-surface: #1F1F1F;
        --text-primary: #FFFFFF;
        --text-secondary: #AAAAAA;
        --text-disabled: #666666;
        --border-light: #333333;
        --border-medium: #444444;
        --gray-50: #1F1F1F;
        --gray-100: #2D2D2D;
    }

    .loading-screen {
        background: linear-gradient(135deg, var(--ptv-primary-dark) 0%, #0F5B56 100%);
    }

    .stat-icon {
        background: rgba(29, 181, 166, 0.2);
    }

    .action-card {
        border-color: var(--border-medium);
    }

    .action-card:hover {
        background: var(--gray-100);
    }
}
*/

/* === PRINT STYLES === */
@media print {
    .sidebar,
    .app-header,
    .action-grid,
    .overlay {
        display: none !important;
    }

    .app-container {
        grid-template-areas: "main";
        grid-template-columns: 1fr;
        grid-template-rows: 1fr;
    }

    .main-content {
        padding: 0;
        background: white;
    }

    .stat-card,
    .table-container {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .page-title {
        color: #000;
        font-size: 24pt;
    }
}

/* === FOCUS STYLES === */
.nav-link:focus,
.action-card:focus,
.btn-icon:focus,
.sidebar-toggle:focus,
.notification-btn:focus,
.user-avatar:focus {
    outline: 2px solid var(--ptv-primary);
    outline-offset: 2px;
}

/* === HOVER ENHANCEMENTS === */
@media (hover: hover) {
    .stat-card:hover {
        transform: translateY(-4px);
    }

    .action-card:hover {
        transform: translateY(-4px);
    }

    .nav-link:hover {
        transform: translateX(4px);
    }
}