/**
 * BASE MOBILE-FIRST CSS - Sistema ERP
 * Estándares 2024-2026
 *
 * Este archivo define los estilos base siguiendo el enfoque Mobile-First.
 * Los estilos base son para móvil, luego se añade complejidad con min-width.
 *
 * IMPORTAR DESPUÉS de design-tokens.css
 */

/* ============================================================
   RESET MODERNO
   ============================================================ */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
    scroll-behavior: smooth;
    text-size-adjust: 100%;
    font-size: 100%;
}

body {
    font-family: var(--font-family-sans);
    font-size: var(--text-base);
    font-weight: var(--font-normal);
    line-height: var(--leading-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    min-height: 100dvh; /* Dynamic viewport height para móviles */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* ============================================================
   IMÁGENES Y MEDIA RESPONSIVE
   ============================================================ */

img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
    height: auto;
}

img {
    border-style: none;
    vertical-align: middle;
}

/* Lazy loading placeholder */
img[loading="lazy"] {
    background-color: var(--color-gray-100);
}

/* ============================================================
   TIPOGRAFÍA RESPONSIVE
   ============================================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-semibold);
    line-height: var(--leading-tight);
    color: var(--color-text);
    text-wrap: balance;
}

h1 {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
}

h2 {
    font-size: var(--text-2xl);
}

h3 {
    font-size: var(--text-xl);
}

h4 {
    font-size: var(--text-lg);
}

h5 {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
}

h6 {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
}

/* Tablet y superior */
@media (min-width: 768px) {
    h1 { font-size: var(--text-4xl); }
    h2 { font-size: var(--text-3xl); }
    h3 { font-size: var(--text-2xl); }
}

/* Desktop */
@media (min-width: 1024px) {
    h1 { font-size: var(--text-5xl); }
}

p {
    max-width: var(--container-prose);
    text-wrap: pretty;
}

small {
    font-size: var(--text-sm);
}

strong, b {
    font-weight: var(--font-semibold);
}

/* ============================================================
   LINKS
   ============================================================ */

a {
    color: var(--color-primary);
    text-decoration: none;
    text-underline-offset: 0.15em;
    transition: var(--transition-colors);
}

a:hover {
    text-decoration: underline;
    color: var(--color-primary-dark);
}

a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* ============================================================
   FORMULARIOS - MOBILE-FIRST
   ============================================================ */

input,
textarea,
select,
button {
    font: inherit;
    color: inherit;
}

input,
textarea,
select {
    width: 100%;
    padding: var(--space-3);
    min-height: var(--touch-target-min);
    font-size: var(--text-base); /* 16px mínimo para evitar zoom en iOS */
    line-height: var(--leading-normal);
    color: var(--color-text);
    background-color: var(--color-surface);
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    appearance: none;
    -webkit-appearance: none;
}

/* iOS zoom fix: inputs menores a 16px causan zoom automático */
@supports (-webkit-touch-callout: none) {
    input, textarea, select {
        font-size: max(16px, var(--text-base));
    }
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-100);
}

input:disabled,
textarea:disabled,
select:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background-color: var(--color-gray-100);
}

input::placeholder,
textarea::placeholder {
    color: var(--color-text-muted);
    opacity: 1;
}

/* Textarea */
textarea {
    min-height: 100px;
    resize: vertical;
}

/* Select con flecha personalizada */
select {
    padding-right: var(--space-10);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
    background-size: 1rem;
}

/* Checkbox y Radio - área táctil amplia */
input[type="checkbox"],
input[type="radio"] {
    width: var(--space-5);
    height: var(--space-5);
    min-height: auto;
    cursor: pointer;
    accent-color: var(--color-primary);
}

/* Label */
label {
    display: block;
    margin-bottom: var(--space-1);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-secondary);
}

/* ============================================================
   BOTONES - MOBILE-FIRST (Touch-friendly)
   ============================================================ */

button,
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    min-height: var(--touch-target-min);
    min-width: var(--touch-target-min);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    line-height: 1;
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: var(--border-width) solid transparent;
    border-radius: var(--radius-md);
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
    transition: var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

/* Dispositivos táctiles: área más grande */
@media (pointer: coarse) {
    button, .btn {
        min-height: var(--touch-target-comfortable);
    }
}

button:hover,
.btn:hover {
    background-color: var(--color-primary-dark);
    text-decoration: none;
}

button:focus-visible,
.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

button:active,
.btn:active {
    transform: scale(0.98);
}

button:disabled,
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* Variantes de botón */
.btn-secondary {
    background-color: var(--color-gray-100);
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-gray-200);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline:hover {
    background-color: var(--color-primary-50);
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-text-secondary);
    border-color: transparent;
}

.btn-ghost:hover {
    background-color: var(--color-gray-100);
    color: var(--color-text);
}

.btn-danger {
    background-color: var(--color-danger-500);
}

.btn-danger:hover {
    background-color: var(--color-danger-600);
}

.btn-success {
    background-color: var(--color-success-500);
}

.btn-success:hover {
    background-color: var(--color-success-600);
}

/* Tamaños de botón */
.btn-sm {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-xs);
    min-height: 36px;
}

.btn-lg {
    padding: var(--space-4) var(--space-6);
    font-size: var(--text-base);
}

/* Botón full width en móvil */
.btn-block {
    width: 100%;
}

@media (min-width: 640px) {
    .btn-block-mobile {
        width: auto;
    }
}

/* ============================================================
   LAYOUTS - MOBILE-FIRST
   ============================================================ */

/* Container responsivo */
.container {
    width: 100%;
    padding-inline: var(--space-4);
    margin-inline: auto;
}

@media (min-width: 640px) {
    .container {
        max-width: 640px;
        padding-inline: var(--space-5);
    }
}

@media (min-width: 768px) {
    .container {
        max-width: 768px;
        padding-inline: var(--space-6);
    }
}

@media (min-width: 1024px) {
    .container {
        max-width: 1024px;
    }
}

@media (min-width: 1280px) {
    .container {
        max-width: 1280px;
    }
}

@media (min-width: 1536px) {
    .container {
        max-width: 1400px;
    }
}

/* Container fluid */
.container-fluid {
    width: 100%;
    padding-inline: var(--space-4);
}

@media (min-width: 768px) {
    .container-fluid {
        padding-inline: var(--space-6);
    }
}

/* ============================================================
   GRID SYSTEM - MOBILE-FIRST
   ============================================================ */

.grid {
    display: grid;
    gap: var(--space-4);
}

/* Grid auto-responsive */
.grid-auto {
    grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr));
}

/* Grid columns (mobile = 1 col siempre) */
.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }

@media (min-width: 640px) {
    .sm\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
    .sm\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 768px) {
    .md\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
    .md\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
    .md\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 1024px) {
    .lg\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
    .lg\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
    .lg\:grid-cols-5 { grid-template-columns: repeat(5, 1fr); }
}

/* ============================================================
   FLEXBOX UTILITIES
   ============================================================ */

.flex { display: flex; }
.inline-flex { display: inline-flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.flex-1 { flex: 1 1 0%; }
.flex-auto { flex: 1 1 auto; }
.flex-none { flex: none; }

.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.items-stretch { align-items: stretch; }

.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }

.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* ============================================================
   CARDS
   ============================================================ */

.card {
    background-color: var(--color-surface);
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-4);
    box-shadow: var(--shadow-sm);
}

@media (min-width: 768px) {
    .card {
        padding: var(--space-6);
    }
}

.card-header {
    padding-bottom: var(--space-4);
    margin-bottom: var(--space-4);
    border-bottom: var(--border-width) solid var(--color-border);
}

.card-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    margin: 0;
}

.card-body {
    flex: 1;
}

.card-footer {
    padding-top: var(--space-4);
    margin-top: var(--space-4);
    border-top: var(--border-width) solid var(--color-border);
}

/* ============================================================
   TABLAS RESPONSIVE
   ============================================================ */

.table-responsive,
.table-container {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    /* Gradiente para indicar scroll */
    background:
        linear-gradient(to right, var(--color-surface, #fff) 30%, transparent),
        linear-gradient(to left, var(--color-surface, #fff) 30%, transparent),
        linear-gradient(to right, rgba(0,0,0,0.08), transparent),
        linear-gradient(to left, rgba(0,0,0,0.08), transparent);
    background-position: left center, right center, left center, right center;
    background-repeat: no-repeat;
    background-size: 40px 100%, 40px 100%, 14px 100%, 14px 100%;
    background-attachment: local, local, scroll, scroll;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-sm);
}

.table-responsive table:not(.table-card-mobile) {
    min-width: 600px;
}

th {
    padding: var(--space-3);
    text-align: left;
    font-weight: var(--font-semibold);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    background-color: var(--color-gray-50);
    border-bottom: var(--border-width) solid var(--color-border);
    white-space: nowrap;
}

td {
    padding: var(--space-3);
    border-bottom: var(--border-width) solid var(--color-border);
    vertical-align: middle;
}

tbody tr:hover {
    background-color: var(--color-gray-50);
}

/* Tabla Card-View en móvil (Mobile-First) */
.table-card-mobile thead {
    display: none;
}

.table-card-mobile tbody {
    display: block;
}

.table-card-mobile tr {
    display: block;
    margin-bottom: var(--space-3);
    padding: var(--space-3);
    background: var(--color-surface);
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--radius-lg);
}

.table-card-mobile td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-2) 0;
    border: none;
    border-bottom: var(--border-width) solid var(--color-gray-100);
}

.table-card-mobile td:last-child {
    border-bottom: none;
}

.table-card-mobile td::before {
    content: attr(data-label);
    font-weight: var(--font-medium);
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
    text-transform: uppercase;
}

@media (min-width: 640px) {
    .table-card-mobile thead {
        display: table-header-group;
    }

    .table-card-mobile tbody {
        display: table-row-group;
    }

    .table-card-mobile tr {
        display: table-row;
        margin-bottom: 0;
        padding: 0;
        background: transparent;
        border: none;
        border-radius: 0;
    }

    .table-card-mobile td {
        display: table-cell;
        padding: var(--space-3);
        border-bottom: var(--border-width) solid var(--color-border);
    }

    .table-card-mobile td::before {
        display: none;
    }
}

/* ============================================================
   BADGES
   ============================================================ */

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    line-height: 1;
    white-space: nowrap;
    border-radius: var(--radius-full);
    background-color: var(--color-gray-100);
    color: var(--color-text-secondary);
}

.badge-primary {
    background-color: var(--color-primary-100);
    color: var(--color-primary-700);
}

.badge-success {
    background-color: var(--color-success-100);
    color: var(--color-success-700);
}

.badge-warning {
    background-color: var(--color-warning-100);
    color: var(--color-warning-700);
}

.badge-danger {
    background-color: var(--color-danger-100);
    color: var(--color-danger-700);
}

.badge-info {
    background-color: var(--color-info-100);
    color: var(--color-info-700);
}

/* ============================================================
   MODALES - MOBILE-FIRST (Bottom Sheet en móvil)
   ============================================================ */

.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: flex-end; /* Desde abajo en móvil */
    justify-content: center;
    padding: 0;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration-200) var(--ease-out),
                visibility var(--duration-200) var(--ease-out);
}

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

.modal {
    width: 100%;
    max-height: 90vh;
    max-height: 90dvh;
    background-color: var(--color-surface);
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
    overflow: hidden;
    transform: translateY(100%);
    transition: transform var(--duration-300) var(--ease-out);
    display: flex;
    flex-direction: column;
}

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

/* Tablet y superior: modal centrado */
@media (min-width: 640px) {
    .modal-overlay {
        align-items: center;
        padding: var(--space-6);
    }

    .modal {
        width: min(90vw, 500px);
        max-height: 85vh;
        border-radius: var(--radius-2xl);
        transform: scale(0.95) translateY(10px);
        opacity: 0;
    }

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

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4);
    border-bottom: var(--border-width) solid var(--color-border);
}

.modal-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    margin: 0;
}

.modal-close {
    min-width: var(--touch-target-min);
    min-height: var(--touch-target-min);
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    border-radius: var(--radius-md);
}

.modal-close:hover {
    background-color: var(--color-gray-100);
    color: var(--color-text);
}

.modal-body {
    padding: var(--space-4);
    overflow-y: auto;
    flex: 1 1 auto;
    min-height: 0;
}

.modal-header,
.modal-footer {
    flex: 0 0 auto;
}

.modal-footer {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-4);
    border-top: var(--border-width) solid var(--color-border);
}

@media (min-width: 640px) {
    .modal-footer {
        flex-direction: row;
        justify-content: flex-end;
    }

    .modal-footer .btn {
        width: auto;
    }
}

/* ============================================================
   NAVEGACIÓN MÓVIL (Bottom Bar)
   ============================================================ */

.nav-bottom {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: var(--nav-bottom-height);
    background-color: var(--color-surface);
    border-top: var(--border-width) solid var(--color-border);
    padding-bottom: env(safe-area-inset-bottom);
    z-index: var(--z-sticky);
}

.nav-bottom-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    height: 100%;
    padding: var(--space-2);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--text-xs);
    transition: color var(--duration-150);
}

.nav-bottom-item:hover,
.nav-bottom-item.active {
    color: var(--color-primary);
}

.nav-bottom-icon {
    font-size: 1.25rem;
    margin-bottom: var(--space-0-5);
}

/* Ocultar en desktop */
@media (min-width: 768px) {
    .nav-bottom {
        display: none;
    }
}

/* ============================================================
   SIDEBAR - MOBILE-FIRST
   ============================================================ */

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    height: 100dvh;
    background-color: var(--color-surface);
    border-right: var(--border-width) solid var(--color-border);
    transform: translateX(-100%);
    transition: transform var(--duration-300) var(--ease-out);
    z-index: var(--z-modal);
    overflow-y: auto;
}

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

.sidebar-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration-200), visibility var(--duration-200);
    z-index: calc(var(--z-modal) - 1);
}

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

/* Tablet y superior: sidebar fijo */
@media (min-width: 1024px) {
    .sidebar {
        transform: translateX(0);
        z-index: var(--z-docked);
    }

    .sidebar-overlay {
        display: none;
    }

    .main-content-with-sidebar {
        margin-left: var(--sidebar-width);
    }
}

/* ============================================================
   UTILIDADES DE VISIBILIDAD
   ============================================================ */

.hidden { display: none !important; }
.block { display: block; }
.inline-block { display: inline-block; }

/* Ocultar en ciertos breakpoints - Mobile-First */
.hide-mobile { display: none !important; }
.show-mobile-only { display: block !important; }

@media (min-width: 640px) {
    .hide-mobile { display: block !important; }
    .hide-sm { display: none !important; }
}

@media (min-width: 768px) {
    .hide-sm { display: block !important; }
    .hide-md { display: none !important; }
}

@media (min-width: 1024px) {
    .hide-md { display: block !important; }
    .hide-lg { display: none !important; }
    .show-mobile-only { display: none !important; }
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ============================================================
   ESPACIADO UTILITIES
   ============================================================ */

.m-0 { margin: 0; }
.m-auto { margin: auto; }
.mx-auto { margin-inline: auto; }
.my-auto { margin-block: auto; }

.p-0 { padding: 0; }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-5 { padding: var(--space-5); }
.p-6 { padding: var(--space-6); }

.px-2 { padding-inline: var(--space-2); }
.px-3 { padding-inline: var(--space-3); }
.px-4 { padding-inline: var(--space-4); }
.px-6 { padding-inline: var(--space-6); }

.py-2 { padding-block: var(--space-2); }
.py-3 { padding-block: var(--space-3); }
.py-4 { padding-block: var(--space-4); }
.py-6 { padding-block: var(--space-6); }

.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

/* ============================================================
   TEXTO UTILITIES
   ============================================================ */

.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }

.font-normal { font-weight: var(--font-normal); }
.font-medium { font-weight: var(--font-medium); }
.font-semibold { font-weight: var(--font-semibold); }
.font-bold { font-weight: var(--font-bold); }

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-success { color: var(--color-success-500); }
.text-warning { color: var(--color-warning-500); }
.text-danger { color: var(--color-danger-500); }

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ============================================================
   BACKGROUNDS
   ============================================================ */

.bg-white { background-color: white; }
.bg-gray-50 { background-color: var(--color-gray-50); }
.bg-gray-100 { background-color: var(--color-gray-100); }
.bg-primary { background-color: var(--color-primary); }
.bg-success { background-color: var(--color-success-500); }
.bg-warning { background-color: var(--color-warning-500); }
.bg-danger { background-color: var(--color-danger-500); }

/* ============================================================
   BORDES
   ============================================================ */

.border { border: var(--border-width) solid var(--color-border); }
.border-0 { border: 0; }
.border-t { border-top: var(--border-width) solid var(--color-border); }
.border-b { border-bottom: var(--border-width) solid var(--color-border); }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

/* ============================================================
   SOMBRAS
   ============================================================ */

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }
.shadow-none { box-shadow: none; }

/* ============================================================
   TOUCH TARGETS - Elementos Interactivos (44-48px mínimo)
   Apple HIG: 44px | Material Design: 48px
   ============================================================ */

/* Icon buttons - garantizan área táctil mínima */
.btn-icon,
.icon-btn,
.action-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: var(--touch-target-min);
    min-height: var(--touch-target-min);
    padding: var(--space-2);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.btn-icon:hover,
.icon-btn:hover,
.action-icon:hover {
    background-color: var(--color-gray-100);
    color: var(--color-text);
}

.btn-icon:focus-visible,
.icon-btn:focus-visible,
.action-icon:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Dispositivos táctiles: aumentar área */
@media (pointer: coarse) {
    .btn-icon,
    .icon-btn,
    .action-icon {
        min-width: var(--touch-target-comfortable);
        min-height: var(--touch-target-comfortable);
    }
}

/* Navigation links - área táctil expandida */
.nav-link,
.menu-item,
.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-height: var(--touch-target-min);
    padding: var(--space-3) var(--space-4);
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.nav-link:hover,
.menu-item:hover,
.dropdown-item:hover {
    background-color: var(--color-gray-100);
    text-decoration: none;
}

.nav-link.active,
.menu-item.active {
    background-color: var(--color-primary-50);
    color: var(--color-primary);
    font-weight: var(--font-medium);
}

@media (pointer: coarse) {
    .nav-link,
    .menu-item,
    .dropdown-item {
        min-height: var(--touch-target-comfortable);
    }
}

/* List items interactivos */
.list-item-interactive {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-height: var(--touch-target-min);
    padding: var(--space-3) var(--space-4);
    background: var(--color-surface);
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.list-item-interactive:hover {
    background-color: var(--color-gray-50);
    border-color: var(--color-primary-200);
}

.list-item-interactive:active {
    transform: scale(0.99);
}

@media (pointer: coarse) {
    .list-item-interactive {
        min-height: var(--touch-target-comfortable);
    }
}

/* Chips/Tags clickeables */
.chip,
.tag-interactive {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    min-height: 32px;
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-sm);
    background-color: var(--color-gray-100);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.chip:hover,
.tag-interactive:hover {
    background-color: var(--color-gray-200);
}

@media (pointer: coarse) {
    .chip,
    .tag-interactive {
        min-height: var(--touch-target-min);
        padding: var(--space-2) var(--space-4);
    }
}

/* Tabs - garantizan área táctil */
.tab-btn,
.tab-item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-height: var(--touch-target-min);
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-secondary);
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.tab-btn:hover,
.tab-item:hover {
    color: var(--color-text);
    background-color: var(--color-gray-50);
}

.tab-btn.active,
.tab-item.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

@media (pointer: coarse) {
    .tab-btn,
    .tab-item {
        min-height: var(--touch-target-comfortable);
    }
}

/* Action buttons en tablas/listas */
.btn-table-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    min-height: 36px;
    padding: var(--space-1);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-table-action:hover {
    background-color: var(--color-gray-100);
    color: var(--color-text);
}

.btn-table-action.danger:hover {
    background-color: var(--color-danger-50);
    color: var(--color-danger-500);
}

@media (pointer: coarse) {
    .btn-table-action {
        min-width: var(--touch-target-min);
        min-height: var(--touch-target-min);
    }
}

/* ============================================================
   GRIDS MEJORADOS CON min() - Prevenir overflow
   ============================================================ */

/* Grid auto-responsive con diferentes tamaños mínimos */
.grid-auto-sm {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: repeat(auto-fill, minmax(min(200px, 100%), 1fr));
}

.grid-auto-md {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr));
}

.grid-auto-lg {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: repeat(auto-fill, minmax(min(350px, 100%), 1fr));
}

/* Grid para cards de estadísticas */
.grid-stats {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: repeat(auto-fill, minmax(min(240px, 100%), 1fr));
}

/* Grid para cards de productos/items */
.grid-products {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: repeat(auto-fill, minmax(min(260px, 100%), 1fr));
}

/* Grid para formularios - 2 columnas que colapsan */
.grid-form {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .grid-form {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Grid 3 columnas responsivo */
.grid-3-responsive {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: repeat(auto-fit, minmax(min(250px, 100%), 1fr));
}

/* Grid 4 columnas responsivo */
.grid-4-responsive {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
}

/* Grid para dashboards con áreas */
.grid-dashboard {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .grid-dashboard {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .grid-dashboard {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1280px) {
    .grid-dashboard {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Grid para KPIs - se adapta automáticamente */
.grid-kpis {
    display: grid;
    gap: var(--space-3);
    grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 640px) {
    .grid-kpis {
        grid-template-columns: repeat(auto-fit, minmax(min(180px, 100%), 1fr));
    }
}

/* ============================================================
   PRINT STYLES
   ============================================================ */

@media print {
    .no-print,
    .nav-bottom,
    .sidebar,
    .modal-overlay {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .card {
        border: 1px solid #ccc;
        box-shadow: none;
    }
}