/* ===== VARIABLES Y CONFIGURACIÓN BASE ===== */
:root {
    --color-principal: #097137;
    --color-secundario: #575656;
    --color-fondo: #FFFFFF;
    --color-exito: #28a745;
    --color-error: #dc3545;
    --color-hover: #0bbd6b;
    --transition-duration: 0.3s;
    --easing: cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 8px;
    --box-shadow: 0 2px 16px rgba(9, 113, 55, 0.07);
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f5f5f5;
    color: var(--color-secundario);
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

/* ===== HEADER ===== */
.header {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--color-fondo);
    border-bottom: 3px solid var(--color-principal);
    padding: 1.5rem 2rem;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.logo {
    position: absolute;
    left: 2rem;
    top: 50%;
    transform: translateY(-50%);
    height: 60px;
    width: auto;
}

.header h1 {
    color: var(--color-principal);
    font-size: 2.2rem;
    margin: 0;
    font-weight: 700;
    text-align: center;
}

/* ===== MAIN CONTAINER ===== */
main {
    max-width: 1000px;
    margin: 2rem auto;
    background: var(--color-fondo);
    border-radius: 12px;
    box-shadow: var(--box-shadow);
    padding: 2.5rem;
}

/* ===== FORM SECTIONS ===== */
.form-section {
    background: #fafafa;
    border: 2px solid #e0e0e0;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
    overflow: hidden;
    transition: border-color var(--transition-duration) var(--easing);
}

.form-section:hover {
    border-color: var(--color-principal);
}

.section-header {
    background: linear-gradient(135deg, var(--color-principal) 0%, #0a8f49 100%);
    padding: 1.2rem 1.5rem;
    border-bottom: 2px solid rgba(255, 255, 255, 0.2);
}

.section-header h2 {
    color: var(--color-fondo);
    font-size: 1.5rem;
    margin: 0;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.section-header i {
    font-size: 1.3rem;
}

.section-content {
    padding: 2rem 1.5rem;
    background: var(--color-fondo);
}

/* ===== SUBSECTION ===== */
.subsection {
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-top: 1.5rem;
}

.subsection h3 {
    color: var(--color-principal);
    font-size: 1.2rem;
    margin: 0 0 1.2rem 0;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

/* ===== FORM GROUPS ===== */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    color: var(--color-secundario);
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-group.required label::after {
    content: " *";
    color: var(--color-error);
    font-weight: bold;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #d1d1d1;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: inherit;
    background: var(--color-fondo);
    color: var(--color-secundario);
    transition: all var(--transition-duration) var(--easing);
    outline: none;
}

.form-control:focus {
    border-color: var(--color-principal);
    background: #f8fdfb;
    box-shadow: 0 0 0 3px rgba(9, 113, 55, 0.1);
}

.form-control.error {
    border-color: var(--color-error);
    background-color: #fff8f8;
}

.form-control.valid {
    border-color: var(--color-exito);
    background-color: #f8fff9;
}

.form-control::placeholder {
    color: #999;
}

/* ===== FORM ROWS ===== */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 0;
}

/* ===== INPUT WITH UNIT ===== */
.input-with-unit {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.input-with-unit .form-control {
    flex: 1;
}

.unit-label {
    color: var(--color-secundario);
    font-weight: 500;
    white-space: nowrap;
    font-size: 0.95rem;
}

/* ===== INPUT HINTS AND ERRORS ===== */
.input-hint {
    font-size: 0.85rem;
    color: #666;
    margin-top: 0.3rem;
    font-style: italic;
}

.error-message {
    display: none;
    color: var(--color-error);
    font-size: 0.875rem;
    margin-top: 0.4rem;
    font-weight: 500;
    animation: shake 0.5s ease-in-out;
}

.form-group.has-error .error-message {
    display: block;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    10%,
    30%,
    50%,
    70%,
    90% {
        transform: translateX(-5px);
    }

    20%,
    40%,
    60%,
    80% {
        transform: translateX(5px);
    }
}

/* ===== SELECT2 STYLING ===== */
.select2-container--default .select2-selection--single {
    height: auto !important;
    min-height: 44px;
    padding: 0 !important;
    border: 2px solid #d1d1d1 !important;
    border-radius: var(--border-radius) !important;
    font-size: 1rem;
    display: flex;
    align-items: center;
}

.select2-container--default .select2-selection--single:focus,
.select2-container--default.select2-container--open .select2-selection--single {
    border-color: var(--color-principal) !important;
    box-shadow: 0 0 0 3px rgba(9, 113, 55, 0.1);
}

.select2-container--default .select2-selection--single .select2-selection__rendered {
    padding: 0.75rem 1rem !important;
    line-height: 1.5 !important;
    color: var(--color-secundario);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.select2-container--default .select2-selection--single .select2-selection__placeholder {
    color: #999 !important;
}

.select2-container--default .select2-selection--single .select2-selection__arrow {
    height: 100% !important;
    right: 10px !important;
    top: 0 !important;
    display: flex;
    align-items: center;
}

.select2-container--default .select2-selection--single .select2-selection__arrow b {
    border-color: var(--color-secundario) transparent transparent transparent;
    border-width: 6px 5px 0 5px;
}

.select2-container {
    width: 100% !important;
}

.select2-dropdown {
    border: 2px solid var(--color-principal);
    border-radius: var(--border-radius);
}

.select2-container--default .select2-results__option--highlighted[aria-selected] {
    background-color: var(--color-principal);
}

/* ===== TABLA PARTICIPACIONES ===== */
.tabla-participaciones-container {
    width: 100%;
    overflow-x: auto;
    margin-bottom: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.tabla-participaciones {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-family: inherit;
}

.tabla-participaciones thead {
    background: linear-gradient(135deg, #f5f8f6 0%, #e8f5ec 100%);
}

.tabla-participaciones th {
    color: var(--color-principal);
    font-weight: 600;
    padding: 1rem;
    border-bottom: 2px solid var(--color-principal);
    text-align: left;
    font-size: 0.95rem;
    white-space: nowrap;
}

.tabla-participaciones td {
    background: var(--color-fondo);
    padding: 0.8rem 1rem;
    border-bottom: 1px solid #e0e0e0;
    vertical-align: middle;
}

.tabla-participaciones tbody tr:last-child td {
    border-bottom: none;
}

.tabla-participaciones tbody tr {
    transition: background-color var(--transition-duration) var(--easing);
}

.tabla-participaciones tbody tr:hover {
    background-color: #f8fdfb;
}

.tabla-participaciones input[type="number"],
.tabla-participaciones select {
    width: 100%;
    padding: 0.6rem 0.8rem;
    border: 2px solid #d1d1d1;
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    font-family: inherit;
    background: var(--color-fondo);
    color: var(--color-secundario);
    outline: none;
    transition: border-color var(--transition-duration) var(--easing);
}

.tabla-participaciones input[type="number"]:focus,
.tabla-participaciones select:focus {
    border-color: var(--color-principal);
    background: #f8fdfb;
}

.tabla-participaciones td:last-child {
    text-align: center;
    width: 100px;
}

/* ===== BUTTONS ===== */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-duration) var(--easing);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: inherit;
    outline: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-success {
    background: var(--color-principal);
    color: var(--color-fondo);
    box-shadow: 0 2px 8px rgba(9, 113, 55, 0.2);
}

.btn-success:hover:not(:disabled) {
    background: var(--color-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(9, 113, 55, 0.3);
}

.btn-success:active:not(:disabled) {
    transform: translateY(0);
}

.btn-outline-success {
    background: var(--color-fondo);
    color: var(--color-principal);
    border: 2px solid var(--color-principal);
}

.btn-outline-success:hover:not(:disabled) {
    background: var(--color-principal);
    color: var(--color-fondo);
}

.btn-agregar-participacion {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.btn-eliminar-participacion {
    background: var(--color-fondo);
    color: var(--color-error);
    border: 2px solid var(--color-error);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-duration) var(--easing);
}

.btn-eliminar-participacion:hover {
    background: var(--color-error);
    color: var(--color-fondo);
}

.btn-remove-file {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: var(--color-error);
    color: var(--color-fondo);
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-duration) var(--easing);
    font-size: 0.9rem;
}

.btn-remove-file:hover {
    background: #c82333;
    transform: scale(1.1);
}

.btn-primary {
    background: #007bff;
    color: var(--color-fondo);
}

.btn-primary:hover:not(:disabled) {
    background: #0056b3;
}

.btn-secondary {
    background: #6c757d;
    color: var(--color-fondo);
}

.btn-secondary:hover:not(:disabled) {
    background: #5a6268;
}

/* ===== FILE UPLOAD ===== */
.file-input-wrapper {
    position: relative;
}

.file-input {
    display: none;
}

.file-input-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    border: 3px dashed #d1d1d1;
    border-radius: var(--border-radius);
    background: #fafafa;
    cursor: pointer;
    transition: all var(--transition-duration) var(--easing);
    text-align: center;
}

.file-input-label:hover {
    border-color: var(--color-principal);
    background: #f8fdfb;
}

.file-input-label i {
    font-size: 3rem;
    color: var(--color-principal);
    margin-bottom: 1rem;
}

.file-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-secundario);
    margin-bottom: 0.5rem;
}

.file-formats {
    font-size: 0.85rem;
    color: #666;
}

.file-preview {
    margin-top: 1rem;
    padding: 1rem;
    border: 2px solid var(--color-principal);
    border-radius: var(--border-radius);
    background: #f8fdfb;
}

.preview-image-container {
    position: relative;
    display: inline-block;
    max-width: 100%;
}

.preview-image-container img {
    max-width: 100%;
    max-height: 200px;
    border-radius: var(--border-radius);
    display: block;
}

.file-info {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.file-name {
    font-weight: 600;
    color: var(--color-secundario);
}

.file-size {
    font-size: 0.9rem;
    color: #666;
}

/* ===== FORM BUTTONS ===== */
.form-buttons {
    display: flex;
    justify-content: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px solid #e0e0e0;
}

.form-buttons .btn {
    font-size: 1.1rem;
    padding: 1rem 3rem;
}

/* ===== FORM MESSAGE ===== */
.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: var(--border-radius);
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.form-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

/* ===== PARTICIPACION RESUMEN ===== */
.participacion-resumen {
    background: #e8f5ec;
    border: 1px solid var(--color-principal);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-top: 1rem;
    display: none;
}

.participacion-resumen.show {
    display: block;
}

.participacion-resumen h4 {
    color: var(--color-principal);
    font-size: 1rem;
    margin: 0 0 0.5rem 0;
}

.participacion-resumen ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.participacion-resumen li {
    padding: 0.3rem 0;
    color: var(--color-secundario);
}

/* ===== LOADING OVERLAY ===== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

.loading-content {
    text-align: center;
    color: var(--color-fondo);
}

.loading-content p {
    margin-top: 1rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.spinner-institucional {
    display: inline-block;
}

/* ===== MODALS ===== */
.modal-atn {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
}

.modal-atn.show {
    display: flex;
}

.modal-atn-content {
    background: var(--color-fondo);
    border-radius: 12px;
    box-shadow: 0 6px 32px rgba(0, 0, 0, 0.3);
    max-width: 500px;
    width: 90%;
    margin: 0 auto;
    overflow: hidden;
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-atn-header-green {
    background: linear-gradient(135deg, var(--color-principal) 0%, #0a8f49 100%);
    padding: 1.5rem;
    color: var(--color-fondo);
}

.modal-atn-header-green h3 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.modal-atn-header-red {
    background: linear-gradient(135deg, var(--color-error) 0%, #c82333 100%);
    padding: 1.5rem;
    color: var(--color-fondo);
}

.modal-atn-header-red h3 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.modal-atn-message {
    padding: 2rem;
    text-align: center;
}

.modal-atn-message p {
    margin: 0;
    font-size: 1.1rem;
    color: var(--color-secundario);
    line-height: 1.6;
}

.modal-atn-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    padding: 0 2rem 2rem 2rem;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        padding: 1rem;
    }

    .logo {
        position: static;
        transform: none;
        margin-bottom: 1rem;
        height: 50px;
    }

    .header h1 {
        font-size: 1.5rem;
    }

    main {
        margin: 1rem;
        padding: 1.5rem;
    }

    .section-header h2 {
        font-size: 1.2rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .tabla-participaciones-container {
        overflow-x: auto;
    }

    .tabla-participaciones {
        min-width: 600px;
    }

    .form-buttons .btn {
        width: 100%;
        justify-content: center;
    }

    .modal-atn-content {
        width: 95%;
    }

    .modal-atn-buttons {
        flex-direction: column;
    }

    .modal-atn-buttons .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.2rem;
    }

    .section-header h2 {
        font-size: 1rem;
    }

    .section-content {
        padding: 1rem;
    }

    .tabla-participaciones th,
    .tabla-participaciones td {
        padding: 0.5rem;
        font-size: 0.85rem;
    }
}