/*
 * EduTec Manager — CSS Principal
 * Archivo: assets/css/etm-main.css
 * Versión: 1.0.0
 *
 * Estructura:
 * 1. Variables del plugin (admin — fijas)
 * 2. Variables del plantel (shortcodes/docs — sobreescritas dinámicamente por PHP)
 * 3. Reset / base
 * 4. Layout admin (.etm-wrap)
 * 5. Cards
 * 6. Formularios (inputs, selects, radios)
 * 7. Botones
 * 8. Tipografía admin
 * 9. Badges y etiquetas
 * 10. Tablas
 * 11. Notices / mensajes
 * 12. Imágenes (upload / preview)
 * 13. Colores y licencia (status)
 * 14. Soporte card
 * 15. Shortcodes — contenedor base
 * 16. Utilidades
 */

/* ============================================================
   1. VARIABLES DEL PLUGIN (admin — fijas)
============================================================ */
:root {
    /* Marca ETM */
    --etm-blue:          #2563eb;
    --etm-blue-dark:     #1d4ed8;
    --etm-blue-light:    #eff6ff;
    --etm-teal:          #0f766e;
    --etm-teal-light:    #f0fdfa;

    /* Neutros */
    --etm-gray-50:       #f8fafc;
    --etm-gray-100:      #f1f5f9;
    --etm-gray-200:      #e2e8f0;
    --etm-gray-300:      #cbd5e1;
    --etm-gray-400:      #94a3b8;
    --etm-gray-500:      #64748b;
    --etm-gray-600:      #475569;
    --etm-gray-700:      #334155;
    --etm-gray-800:      #1e293b;
    --etm-gray-900:      #0f172a;

    /* Semánticos */
    --etm-success:       #16a34a;
    --etm-success-light: #f0fdf4;
    --etm-danger:        #dc2626;
    --etm-danger-light:  #fef2f2;
    --etm-warning:       #d97706;
    --etm-warning-light: #fffbeb;
    --etm-info:          #0284c7;
    --etm-info-light:    #f0f9ff;

    /* Tipografía admin */
    --etm-font-admin:    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --etm-font-mono:     'SFMono-Regular', Consolas, monospace;

    /* Espaciado */
    --etm-radius:        8px;
    --etm-radius-lg:     12px;
    --etm-shadow:        0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
    --etm-shadow-md:     0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.05);
}

/* ============================================================
   2. VARIABLES DEL PLANTEL
   Sobreescritas dinámicamente por PHP en el frontend.
   Estos valores son los defaults de arranque.
============================================================ */
:root {
    --etm-p-primario:       #2563eb;
    --etm-p-secundario:     #0f766e;
    --etm-p-h1-familia:     'Montserrat', sans-serif;
    --etm-p-h1-tamano:      28px;
    --etm-p-h1-color:       #1e293b;
    --etm-p-h2-familia:     'Montserrat', sans-serif;
    --etm-p-h2-tamano:      22px;
    --etm-p-h2-color:       #1e293b;
    --etm-p-h3-familia:     'Montserrat', sans-serif;
    --etm-p-h3-tamano:      18px;
    --etm-p-h3-color:       #1e293b;
    --etm-p-texto-familia:  'Noto Sans', sans-serif;
    --etm-p-texto-tamano:   14px;
    --etm-p-texto-color:    #334155;
}

/* ============================================================
   3. RESET / BASE
============================================================ */
.etm-wrap *,
.etm-shortcode * {
    box-sizing: border-box;
}

/* ============================================================
   4. LAYOUT ADMIN
============================================================ */
.etm-wrap {
    font-family:    var(--etm-font-admin);
    color:          var(--etm-gray-800);
    max-width:      90%;
    padding-right:  20px;
}

.etm-wrap h1 {
    display:        flex;
    align-items:    center;
    gap:            10px;
    font-size:      22px;
    font-weight:    600;
    color:          var(--etm-gray-900);
    margin-bottom:  24px;
    padding-bottom: 16px;
    border-bottom:  2px solid var(--etm-gray-200);
}

.etm-wrap h1 i {
    color: var(--etm-blue);
}

.etm-section-title {
    display:        flex;
    align-items:    center;
    gap:            8px;
    font-size:      16px !important;
    font-weight:    600 !important;
    color:          var(--etm-gray-700) !important;
    margin:         0 0 20px 0 !important;
    padding:        0 !important;
    border:         none !important;
}

.etm-section-title i {
    color: var(--etm-blue);
    font-size: 15px;
}

/* ============================================================
   5. CARDS
============================================================ */
.etm-card {
    background:    #fff;
    border:        1px solid var(--etm-gray-200);
    border-radius: var(--etm-radius-lg);
    padding:       24px;
    margin-bottom: 20px;
    box-shadow:    var(--etm-shadow);
}

.etm-card-danger {
    border-color:  var(--etm-danger);
    background:    var(--etm-danger-light);
}

.etm-card-danger .etm-section-title {
    color: var(--etm-danger) !important;
}

.etm-card-danger .etm-section-title i {
    color: var(--etm-danger);
}

/* ============================================================
   6. FORMULARIOS
============================================================ */
.etm-form-grid {
    display:               grid;
    grid-template-columns: repeat(2, 1fr);
    gap:                   16px;
}

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

@media (max-width: 1024px) {
    .etm-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .etm-form-grid,
    .etm-grid-4 {
        grid-template-columns: 1fr;
    }
}

.etm-col-2 {
    grid-column: span 2;
}

@media (max-width: 640px) {
    .etm-col-2 {
        grid-column: span 1;
    }
}

.etm-field {
    display:        flex;
    flex-direction: column;
    gap:            6px;
}

.etm-field-sm {
    max-width: 140px;
}

.etm-field label {
    font-size:   13px;
    font-weight: 500;
    color:       var(--etm-gray-600);
}

.etm-input,
.etm-select {
    font-family:   var(--etm-font-admin);
    font-size:     14px;
    color:         var(--etm-gray-800);
    background:    #fff;
    border:        1px solid var(--etm-gray-300);
    border-radius: var(--etm-radius);
    padding:       8px 12px;
    width:         100%;
    transition:    border-color .15s, box-shadow .15s;
    outline:       none;
}

.etm-input:focus,
.etm-select:focus {
    border-color: var(--etm-blue);
    box-shadow:   0 0 0 3px rgba(37,99,235,.12);
}

.etm-input-lg {
    font-size: 16px;
    padding:   10px 14px;
}

.etm-select {
    appearance:      none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2364748b' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat:   no-repeat;
    background-position: right 12px center;
    padding-right:       36px;
    cursor:              pointer;
}

.etm-hint {
    font-size:  12px;
    color:      var(--etm-gray-500);
    margin-top: 2px;
}

.etm-description {
    font-size:     13px;
    color:         var(--etm-gray-500);
    margin-bottom: 16px;
    margin-top:    -8px;
}

/* Radio group */
.etm-radio-group {
    display:   flex;
    flex-direction: column;
    gap:       8px;
    padding:   4px 0;
}

.etm-radio-label {
    display:     flex;
    align-items: center;
    gap:         8px;
    font-size:   14px;
    color:       var(--etm-gray-700);
    cursor:      pointer;
}

.etm-radio-label input[type="radio"] {
    width:  16px;
    height: 16px;
    accent-color: var(--etm-blue);
    cursor: pointer;
}

/* Color picker */
.etm-color-field {
    display:     flex;
    align-items: center;
    gap:         8px;
}

.etm-color-picker {
    width:         44px;
    height:        38px;
    border:        1px solid var(--etm-gray-300);
    border-radius: var(--etm-radius);
    padding:       2px;
    cursor:        pointer;
    background:    #fff;
    flex-shrink:   0;
}

.etm-color-text {
    flex: 1;
}

/* Tipografía rows */
.etm-tipografia-row {
    display:       grid;
    grid-template-columns: 60px 1fr 120px 160px 1fr;
    align-items:   center;
    gap:           12px;
    padding:       14px 0;
    border-bottom: 1px solid var(--etm-gray-100);
}

.etm-tipografia-row:last-child {
    border-bottom: none;
}

.etm-tipografia-label {
    font-size:  14px;
    color:      var(--etm-gray-600);
    text-align: center;
}

.etm-tipografia-preview {
    padding:       6px 12px;
    background:    var(--etm-gray-50);
    border-radius: var(--etm-radius);
    overflow:      hidden;
    white-space:   nowrap;
    text-overflow: ellipsis;
}

@media (max-width: 900px) {
    .etm-tipografia-row {
        grid-template-columns: 1fr 1fr;
    }
    .etm-tipografia-preview {
        grid-column: span 2;
    }
}

/* ============================================================
   7. BOTONES
============================================================ */
.etm-btn {
    display:        inline-flex;
    align-items:    center;
    gap:            7px;
    font-family:    var(--etm-font-admin);
    font-size:      14px;
    font-weight:    500;
    padding:        9px 18px;
    border-radius:  var(--etm-radius);
    border:         none;
    cursor:         pointer;
    text-decoration: none;
    transition:     background .15s, opacity .15s, transform .1s;
    white-space:    nowrap;
}

.etm-btn:active {
    transform: translateY(1px);
}

.etm-btn:disabled {
    opacity: .6;
    cursor:  not-allowed;
}

.etm-btn-primary {
    background: var(--etm-blue);
    color:      #fff;
}

.etm-btn-primary:hover:not(:disabled) {
    background: var(--etm-blue-dark);
    color:      #fff;
}

.etm-btn-secondary {
    background: var(--etm-gray-100);
    color:      var(--etm-gray-700);
    border:     1px solid var(--etm-gray-300);
}

.etm-btn-secondary:hover:not(:disabled) {
    background: var(--etm-gray-200);
    color:      var(--etm-gray-800);
}

.etm-btn-danger {
    background: var(--etm-danger);
    color:      #fff;
}

.etm-btn-danger:hover:not(:disabled) {
    background: #b91c1c;
    color:      #fff;
}

.etm-btn-success {
    background: var(--etm-success);
    color:      #fff;
}

.etm-btn-sm {
    font-size: 12px;
    padding:   6px 12px;
}

.etm-btn-lg {
    font-size: 15px;
    padding:   11px 24px;
}

.etm-form-actions {
    display:     flex;
    justify-content: flex-end;
    padding-top: 8px;
    margin-top:  4px;
}

/* ============================================================
   8. TIPOGRAFÍA ADMIN
============================================================ */
.etm-wrap h2 {
    font-size:   18px;
    font-weight: 600;
    color:       var(--etm-gray-800);
}

.etm-wrap h3 {
    font-size:   15px;
    font-weight: 600;
    color:       var(--etm-gray-700);
    margin:      0 0 10px 0;
}

code {
    font-family:   var(--etm-font-mono);
    font-size:     13px;
    background:    var(--etm-gray-100);
    padding:       2px 6px;
    border-radius: 4px;
    color:         var(--etm-gray-700);
}

/* ============================================================
   9. BADGES Y ETIQUETAS
============================================================ */
.etm-badge {
    display:       inline-block;
    font-size:     11px;
    font-weight:   600;
    padding:       3px 8px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: .4px;
}

.etm-badge-blue {
    background: var(--etm-blue-light);
    color:      var(--etm-blue-dark);
}

.etm-badge-green {
    background: var(--etm-success-light);
    color:      var(--etm-success);
}

.etm-badge-red {
    background: var(--etm-danger-light);
    color:      var(--etm-danger);
}

.etm-badge-gray {
    background: var(--etm-gray-100);
    color:      var(--etm-gray-600);
}

.etm-badge-teal {
    background: var(--etm-teal-light);
    color:      var(--etm-teal);
}

/* ============================================================
   10. TABLAS
============================================================ */
.etm-table-simple {
    width:           100%;
    border-collapse: collapse;
    font-size:       14px;
}

.etm-table-simple th,
.etm-table-simple td {
    padding:      10px 14px;
    text-align:   left;
    border-bottom: 1px solid var(--etm-gray-100);
    vertical-align: top;
}

.etm-table-simple th {
    font-weight: 600;
    color:       var(--etm-gray-600);
    width:       180px;
    white-space: nowrap;
}

.etm-table-simple tr:last-child th,
.etm-table-simple tr:last-child td {
    border-bottom: none;
}

/* ============================================================
   11. NOTICES / MENSAJES
============================================================ */
.etm-notice {
    padding:       12px 16px;
    border-radius: var(--etm-radius);
    font-size:     14px;
    font-weight:   500;
    margin-bottom: 16px;
    display:       flex;
    align-items:   center;
    gap:           8px;
}

.etm-notice-success {
    background:   var(--etm-success-light);
    color:        var(--etm-success);
    border:       1px solid #bbf7d0;
}

.etm-notice-error {
    background:   var(--etm-danger-light);
    color:        var(--etm-danger);
    border:       1px solid #fecaca;
}

.etm-notice-warning {
    background:   var(--etm-warning-light);
    color:        var(--etm-warning);
    border:       1px solid #fde68a;
}

.etm-notice-info {
    background:   var(--etm-info-light);
    color:        var(--etm-info);
    border:       1px solid #bae6fd;
}

/* ============================================================
   12. IMÁGENES — UPLOAD / PREVIEW
============================================================ */
.etm-image-field {
    display:        flex;
    flex-direction: column;
    gap:            8px;
}

.etm-image-preview {
    width:          100%;
    aspect-ratio:   1 / 1;
    border:         2px dashed var(--etm-gray-300);
    border-radius:  var(--etm-radius);
    background:     var(--etm-gray-50);
    overflow:       hidden;
    display:        flex;
    align-items:    center;
    justify-content: center;
    transition:     border-color .15s;
}

/* Encabezado y footer tienen proporción horizontal */
.etm-image-field[data-campo="encabezado_documentos"] .etm-image-preview,
.etm-image-field[data-campo="footer_documentos"] .etm-image-preview {
    aspect-ratio: 1250 / 110;
}

.etm-image-preview.has-image {
    border-style:  solid;
    border-color:  var(--etm-gray-200);
}

.etm-image-preview img {
    width:      100%;
    height:     100%;
    object-fit: contain;
    display:    block;
}

.etm-image-placeholder {
    display:        flex;
    flex-direction: column;
    align-items:    center;
    gap:            6px;
    color:          var(--etm-gray-400);
}

.etm-image-placeholder i {
    font-size: 28px;
}

.etm-image-placeholder span {
    font-size: 12px;
}

.etm-image-actions {
    display:     flex;
    gap:         8px;
    flex-wrap:   wrap;
}

/* ============================================================
   13. LICENCIA — STATUS
============================================================ */
.etm-license-status {
    display:       flex;
    align-items:   center;
    gap:           10px;
    padding:       14px 18px;
    border-radius: var(--etm-radius-lg);
    font-size:     15px;
    font-weight:   500;
    margin-bottom: 20px;
}

.etm-status-active {
    background: var(--etm-success-light);
    color:      var(--etm-success);
    border:     1px solid #bbf7d0;
}

.etm-status-active i {
    font-size: 18px;
}

.etm-status-inactive {
    background: var(--etm-gray-100);
    color:      var(--etm-gray-500);
    border:     1px solid var(--etm-gray-200);
}

.etm-license-form {
    display:     flex;
    gap:         10px;
    align-items: flex-start;
    flex-wrap:   wrap;
}

.etm-license-form .etm-input {
    max-width:   360px;
    font-family: var(--etm-font-mono);
    letter-spacing: 1px;
}

/* ============================================================
   14. SOPORTE CARD
============================================================ */
.etm-soporte-card {
    background:    #fff;
    border:        1px solid var(--etm-gray-200);
    border-radius: var(--etm-radius-lg);
    padding:       24px 28px;
    max-width:     480px;
    box-shadow:    var(--etm-shadow);
    line-height:   1.8;
}

.etm-soporte-card p {
    margin:    0 0 10px 0;
    font-size: 14px;
    color:     var(--etm-gray-700);
}

.etm-soporte-card a {
    color:           var(--etm-blue);
    text-decoration: none;
    font-weight:     500;
}

.etm-soporte-card a:hover {
    text-decoration: underline;
}

.etm-soporte-card .fa-whatsapp {
    color: #16a34a;
}

/* ============================================================
   15. SHORTCODES — CONTENEDOR BASE
   Todos los shortcodes heredan estas variables del plantel.
============================================================ */
.etm-shortcode {
    font-family: var(--etm-p-texto-familia);
    font-size:   var(--etm-p-texto-tamano);
    color:       var(--etm-p-texto-color);
    line-height: 1.6;
}

.etm-shortcode h1 {
    font-family: var(--etm-p-h1-familia);
    font-size:   var(--etm-p-h1-tamano);
    color:       var(--etm-p-h1-color);
}

.etm-shortcode h2 {
    font-family: var(--etm-p-h2-familia);
    font-size:   var(--etm-p-h2-tamano);
    color:       var(--etm-p-h2-color);
}

.etm-shortcode h3 {
    font-family: var(--etm-p-h3-familia);
    font-size:   var(--etm-p-h3-tamano);
    color:       var(--etm-p-h3-color);
}

/* Botón primario en shortcodes usa color del plantel */
.etm-shortcode .etm-btn-primary {
    background: var(--etm-p-primario);
    color:#ffffff;
}

.etm-shortcode .etm-btn-primary:hover:not(:disabled) {
    filter: brightness(.9);
}

/* Acentos con color del plantel */
.etm-shortcode .etm-accent {
    color: var(--etm-p-primario);
}

.etm-shortcode .etm-accent-bg {
    background: var(--etm-p-primario);
    color:      #fff;
}

.etm-shortcode .etm-accent-secondary {
    color: var(--etm-p-secundario);
}

/* ============================================================
   16. UTILIDADES
============================================================ */
.etm-loader {
    display:         inline-flex;
    align-items:     center;
    gap:             8px;
    color:           var(--etm-gray-500);
    font-size:       14px;
}

.etm-loader i {
    animation: etm-spin .8s linear infinite;
}

@keyframes etm-spin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

.etm-empty {
    text-align:  center;
    padding:     40px 20px;
    color:       var(--etm-gray-400);
    font-size:   14px;
}

.etm-empty i {
    display:       block;
    font-size:     36px;
    margin-bottom: 10px;
}

.etm-divider {
    border:        none;
    border-top:    1px solid var(--etm-gray-200);
    margin:        20px 0;
}

.etm-flex {
    display:     flex;
    align-items: center;
    gap:         8px;
}

.etm-flex-between {
    display:         flex;
    align-items:     center;
    justify-content: space-between;
    gap:             8px;
}

.etm-text-muted {
    color:     var(--etm-gray-500);
    font-size: 13px;
}

.etm-text-danger {
    color: var(--etm-danger);
}

.etm-text-success {
    color: var(--etm-success);
}

.etm-mt-0  { margin-top:    0; }
.etm-mb-0  { margin-bottom: 0; }
.etm-mt-8  { margin-top:    8px; }
.etm-mb-8  { margin-bottom: 8px; }
.etm-mt-16 { margin-top:    16px; }
.etm-mb-16 { margin-bottom: 16px; }