/* ===== MOBILE OPTIMIZATIONS - SOBRETURNO ===== */
/* Utilidades y componentes mobile-first reutilizables */

/* ===== VARIABLES MOBILE ===== */
:root {
    /* Touch targets */
    --touch-target-min: 44px;
    --touch-target-comfortable: 48px;
    --touch-target-generous: 52px;
    
    /* Mobile spacing */
    --mobile-padding-xs: 0.75rem;
    --mobile-padding-sm: 1rem;
    --mobile-padding-md: 1.5rem;
    --mobile-padding-lg: 2rem;
    
    /* Mobile typography */
    --mobile-text-xs: 0.8rem;
    --mobile-text-sm: 0.9rem;
    --mobile-text-base: 1rem;
    --mobile-text-lg: 1.125rem;
    
    /* Mobile animations */
    --mobile-transition-fast: 0.15s ease-out;
    --mobile-transition-normal: 0.2s ease-out;
    --mobile-transition-slow: 0.3s ease-out;
}

/* ===== UTILIDADES MOBILE ===== */

/* Ocultar elementos en mobile */
.mobile-hidden {
    display: none !important;
}

/* Mostrar solo en mobile */
.mobile-only {
    display: block !important;
}

/* Touch-friendly spacing */
.touch-spacing {
    padding: var(--mobile-padding-sm);
}

.touch-spacing-lg {
    padding: var(--mobile-padding-lg);
}

/* Touch targets seguros */
.touch-target {
    min-height: var(--touch-target-min);
    min-width: var(--touch-target-min);
    display: flex;
    align-items: center;
    justify-content: center;
}

.touch-target-comfortable {
    min-height: var(--touch-target-comfortable);
    min-width: var(--touch-target-comfortable);
}

.touch-target-generous {
    min-height: var(--touch-target-generous);
    min-width: var(--touch-target-generous);
}

/* Prevenir zoom accidental en iOS */
.no-zoom {
    -webkit-text-size-adjust: 100%;
    font-size: 16px !important;
}

/* Quitar highlight de tap en webkit */
.no-tap-highlight {
    -webkit-tap-highlight-color: transparent;
}

/* ===== COMPONENTES MOBILE ===== */

/* Botones mobile-friendly */
.btn-mobile {
    min-height: var(--touch-target-comfortable);
    padding: 0.875rem 1.5rem;
    font-size: var(--mobile-text-base);
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: var(--mobile-transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    -webkit-tap-highlight-color: transparent;
    -webkit-appearance: none;
}

.btn-mobile:active {
    transform: scale(0.98);
}

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

.btn-mobile.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-mobile.btn-secondary {
    background: var(--bg-light);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-mobile.btn-full-width {
    width: 100%;
}

/* Inputs mobile-friendly */
.input-mobile {
    width: 100%;
    min-height: var(--touch-target-comfortable);
    padding: 1rem 1.125rem;
    font-size: 16px; /* Previene zoom en iOS */
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: var(--mobile-transition-normal);
    -webkit-appearance: none;
    -webkit-tap-highlight-color: transparent;
}

.input-mobile:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Cards mobile-friendly */
.card-mobile {
    background: white;
    border-radius: 12px;
    padding: var(--mobile-padding-md);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
    transition: var(--mobile-transition-normal);
}

.card-mobile:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateY(-1px);
}

/* Grid responsive */
.grid-mobile {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr;
}

.grid-mobile-2 {
    grid-template-columns: repeat(2, 1fr);
}

/* Stack en mobile */
.stack-mobile {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.stack-mobile-sm {
    gap: 0.5rem;
}

.stack-mobile-lg {
    gap: 1.5rem;
}

/* ===== TOAST NOTIFICATIONS MOBILE ===== */
.toast-mobile {
    position: fixed;
    top: 1rem;
    left: 1rem;
    right: 1rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.12);
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    z-index: 10000;
    transform: translateY(-100px);
    transition: transform 0.3s ease;
    border-left: 4px solid;
}

.toast-mobile.show {
    transform: translateY(0);
}

.toast-mobile.success {
    border-left-color: var(--success-color);
    background: #f0fdf4;
    color: #166534;
}

.toast-mobile.error {
    border-left-color: var(--error-color);
    background: #fef2f2;
    color: #dc2626;
}

.toast-mobile.info {
    border-left-color: var(--primary-color);
    background: #f0f9ff;
    color: #1d4ed8;
}

.toast-mobile-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.toast-mobile-content {
    flex: 1;
    font-weight: 500;
}

.toast-mobile-close {
    background: none;
    border: none;
    color: currentColor;
    opacity: 0.7;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    min-width: var(--touch-target-min);
    min-height: var(--touch-target-min);
    display: flex;
    align-items: center;
    justify-content: center;
}

.toast-mobile-close:hover {
    opacity: 1;
    background: rgba(0,0,0,0.1);
}

/* ===== MODAL MOBILE ===== */
.modal-mobile {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 0;
}

.modal-mobile-content {
    background: white;
    border-radius: 20px 20px 0 0;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    padding: 1.5rem;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.modal-mobile.show .modal-mobile-content {
    transform: translateY(0);
}

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

.modal-mobile-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-mobile-close {
    background: var(--bg-light);
    border: none;
    width: var(--touch-target-comfortable);
    height: var(--touch-target-comfortable);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--mobile-transition-normal);
}

.modal-mobile-close:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

/* ===== LOADING STATES ===== */
.loading-mobile {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
    gap: 1rem;
}

.loading-mobile-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading-mobile-text {
    color: var(--text-secondary);
    font-size: var(--mobile-text-sm);
}

/* ===== BREAKPOINTS ===== */

/* Tablets and up */
@media (min-width: 768px) {
    .mobile-hidden {
        display: block !important;
    }
    
    .mobile-only {
        display: none !important;
    }
    
    .grid-mobile {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-mobile-2 {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .stack-mobile {
        flex-direction: row;
        align-items: center;
    }
    
    .modal-mobile {
        align-items: center;
        padding: 2rem;
    }
    
    .modal-mobile-content {
        border-radius: 20px;
        max-width: 500px;
        max-height: 80vh;
        transform: scale(0.9);
    }
    
    .modal-mobile.show .modal-mobile-content {
        transform: scale(1);
    }
    
    .toast-mobile {
        top: 2rem;
        right: 2rem;
        left: auto;
        max-width: 400px;
    }
}

/* ===== LANDSCAPE OPTIMIZATIONS ===== */
@media (orientation: landscape) and (max-height: 600px) {
    .modal-mobile-content {
        max-height: 85vh;
        padding: 1rem;
    }
    
    .loading-mobile {
        padding: 1rem;
    }
    
    .toast-mobile {
        top: 0.5rem;
        left: 0.5rem;
        right: 0.5rem;
    }
}

/* ===== ACCESSIBILITY ===== */

/* Focus indicators para navegación por teclado */
.btn-mobile:focus-visible,
.input-mobile:focus-visible,
.toast-mobile-close:focus-visible,
.modal-mobile-close:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Reducir movimiento para usuarios que lo prefieren */
@media (prefers-reduced-motion: reduce) {
    .btn-mobile:active,
    .card-mobile:hover,
    .toast-mobile,
    .modal-mobile-content,
    .loading-mobile-spinner {
        transform: none !important;
        animation: none !important;
        transition: none !important;
    }
}

/* ===== UTILITY ANIMATIONS ===== */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

/* ===== SAFE AREAS (iPhone X+) ===== */
@supports (padding: max(0px)) {
    .safe-area-top {
        padding-top: max(1rem, env(safe-area-inset-top));
    }
    
    .safe-area-bottom {
        padding-bottom: max(1rem, env(safe-area-inset-bottom));
    }
    
    .safe-area-left {
        padding-left: max(1rem, env(safe-area-inset-left));
    }
    
    .safe-area-right {
        padding-right: max(1rem, env(safe-area-inset-right));
    }
}