/* ============================================
   TEMA DE COLORES - Moderno y Profesional
   ============================================ */
:root {
    /* Colores principales */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;

    /* Colores de acento */
    --color-success: #059669;
    --color-success-light: #10b981;
    --color-warning: #d97706;
    --color-warning-light: #f59e0b;
    --color-danger: #dc2626;
    --color-info: #0891b2;

    /* Fondos y bordes */
    --bg-light: #f8fafc;
    --bg-card: #ffffff;
    --border-color: #e2e8f0;
    --border-radius: 12px;

    /* Texto */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;

    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-primary);
}

a, .btn-link {
    color: var(--color-primary);
}

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

/* Botones principales */
.btn-primary {
    color: #fff;
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-success {
    background-color: var(--color-success);
    border-color: var(--color-success);
    border-radius: 8px;
    font-weight: 500;
}

.btn-success:hover {
    background-color: #047857;
    border-color: #047857;
}

.btn-warning {
    background-color: var(--color-warning);
    border-color: var(--color-warning);
    color: #fff;
    border-radius: 8px;
    font-weight: 500;
}

.btn-warning:hover {
    background-color: #b45309;
    border-color: #b45309;
    color: #fff;
}

.btn-danger {
    background-color: var(--color-danger);
    border-color: var(--color-danger);
    border-radius: 8px;
}

.btn-outline-primary {
    color: var(--color-primary);
    border-color: var(--color-primary);
    border-radius: 8px;
}

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

.btn-outline-danger {
    border-radius: 8px;
}

.btn-outline-secondary {
    border-radius: 8px;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.25);
}

/* Cards mejoradas */
.card {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    background: var(--bg-card);
    transition: box-shadow 0.2s ease;
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    background-color: #f8fafc;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
}

/* Stats cards con colores del tema */
.card.bg-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%) !important;
    border: none;
}

.card.bg-success {
    background: linear-gradient(135deg, var(--color-success-light) 0%, var(--color-success) 100%) !important;
    border: none;
}

.card.bg-warning {
    background: linear-gradient(135deg, var(--color-warning-light) 0%, var(--color-warning) 100%) !important;
    border: none;
}

.card.bg-info {
    background: linear-gradient(135deg, var(--color-info) 0%, #0e7490 100%) !important;
    border: none;
}

/* Form controls */
.form-control, .form-select {
    border-radius: 8px;
    border-color: var(--border-color);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-label {
    font-weight: 500;
    color: var(--text-primary);
}

/* Badges */
.badge.bg-success {
    background-color: var(--color-success) !important;
}

.badge.bg-warning {
    background-color: var(--color-warning) !important;
    color: #fff !important;
}

.badge.bg-danger {
    background-color: var(--color-danger) !important;
}

.badge.bg-info {
    background-color: var(--color-info) !important;
}

/* Alerts */
.alert-success {
    background-color: #ecfdf5;
    border-color: #a7f3d0;
    color: #065f46;
}

.alert-danger {
    background-color: #fef2f2;
    border-color: #fecaca;
    color: #991b1b;
}

.alert-warning {
    background-color: #fffbeb;
    border-color: #fde68a;
    color: #92400e;
}

.alert-info {
    background-color: #ecfeff;
    border-color: #a5f3fc;
    color: #155e75;
}

/* Tables */
.table {
    border-radius: 8px;
    overflow: hidden;
}

.table thead th {
    background-color: #f8fafc;
    border-bottom: 2px solid var(--border-color);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.table tbody tr:hover {
    background-color: #f8fafc;
}

/* Navbar/Sidebar */
.sidebar, .navbar {
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
}

.nav-link {
    color: rgba(255, 255, 255, 0.8);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.nav-link:hover {
    color: #fff;
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-link.active {
    color: #fff;
    background-color: var(--color-primary);
}

.content {
    padding-top: 1.1rem;
}

h1:focus {
    outline: none;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid #e50000;
}

.validation-message {
    color: #e50000;
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.darker-border-checkbox.form-check-input {
    border-color: #929292;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
}

/* ============================================
   MEJORAS MOBILE - Optimizaciones para Móviles
   ============================================ */

/* Prevenir zoom automático en iOS - Tamaño mínimo de fuente 16px */
@media (max-width: 768px) {
    input[type="text"],
    input[type="email"],
    input[type="tel"],
    input[type="number"],
    select,
    textarea,
    .form-control,
    .form-select {
        font-size: 16px !important;
    }
}

/* Tamaños táctiles apropiados para móviles (mínimo 48px según WCAG) */
@media (max-width: 768px) {
    .form-control,
    .form-select {
        min-height: 48px;
        padding: 12px 16px;
    }

    .btn {
        min-height: 48px;
        padding: 12px 24px;
        font-size: 16px;
    }

    .btn-sm {
        min-height: 40px;
        padding: 8px 16px;
    }

    /* Labels más grandes y legibles */
    .form-label {
        font-size: 14px;
        font-weight: 600;
        margin-bottom: 8px;
    }

    /* Reducir padding de cards en móvil */
    .card-body {
        padding: 1rem;
    }

    .card-header {
        padding: 0.75rem 1rem;
    }

    /* Espaciado entre campos */
    .mb-3 {
        margin-bottom: 1.25rem !important;
    }

    /* Secciones más claras */
    .border-bottom {
        margin-bottom: 1rem;
        padding-bottom: 0.75rem;
    }

    /* Input group (para el signo $) más grande */
    .input-group-text {
        min-height: 48px;
        font-size: 18px;
        display: flex;
        align-items: center;
    }
}

/* Botón sticky en móvil - Siempre visible */
@media (max-width: 768px) {
    .form-submit-container {
        position: sticky;
        bottom: 0;
        left: 0;
        right: 0;
        background: white;
        padding: 1rem;
        box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.1);
        z-index: 100;
        margin-left: -1rem;
        margin-right: -1rem;
        margin-bottom: -1rem;
    }
}

/* En desktop, comportamiento normal */
@media (min-width: 769px) {
    .form-submit-container {
        padding: 1rem 0;
    }
}

/* Mejorar legibilidad de placeholders */
::placeholder {
    color: #6c757d;
    opacity: 0.7;
}

/* Alertas más visibles en móvil */
@media (max-width: 768px) {
    .alert {
        font-size: 14px;
        padding: 12px;
    }

    .alert-heading {
        font-size: 18px;
    }
}

/* Spinner de carga más grande en móvil */
@media (max-width: 768px) {
    .spinner-border-sm {
        width: 1.2rem;
        height: 1.2rem;
    }
}

/* Card de alumnos más compacto en móvil */
@media (max-width: 768px) {
    .card.bg-light .card-body {
        padding: 0.75rem;
    }
}

/* Mejorar contraste de texto muted en móvil */
@media (max-width: 768px) {
    .text-muted {
        color: #495057 !important;
    }
}

/* Botón de agregar alumno más visible en móvil */
@media (max-width: 768px) {
    .btn-outline-primary {
        width: 100%;
        margin-top: 0.5rem;
    }
}

/* Mejoras generales de UX */
@media (max-width: 768px) {
    /* Container con menos padding en móvil */
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    /* Títulos más compactos */
    h3 {
        font-size: 1.5rem;
    }

    h5 {
        font-size: 1.1rem;
    }

    h6 {
        font-size: 0.95rem;
    }

    /* Small text más legible */
    small,
    .small {
        font-size: 0.85rem;
    }
}

/* Fix para que los inputs no se desborden en móvil */
@media (max-width: 768px) {
    .form-control,
    .form-select,
    .input-group {
        max-width: 100%;
    }
}

/* Mejorar el aspecto del input file en móvil */
@media (max-width: 768px) {
    input[type="file"]::file-selector-button {
        padding: 10px 16px;
        margin-right: 12px;
        font-size: 14px;
    }
}

/* Animación suave para el sticky button */
@media (max-width: 768px) {
    .form-submit-container {
        transition: box-shadow 0.3s ease;
    }
}

/* Mejoras de accesibilidad: aumentar área táctil de botones pequeños */
@media (max-width: 768px) {
    .btn-close {
        padding: 12px;
        min-width: 44px;
        min-height: 44px;
    }
}

/* ============================================
   MEJORAS OPCIONALES - Vista Previa, Validación, Acordeón
   ============================================ */

/* Validación visual con checks verdes */
.input-with-validation {
    position: relative;
}

.validation-icon {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: #198754;
    font-size: 20px;
    pointer-events: none;
    font-weight: bold;
}

.validation-icon-group {
    right: 15px;
}

.form-control.is-valid {
    border-color: #198754;
    padding-right: 40px;
    background-image: none !important; /* Remover el check de Bootstrap */
}

.input-group .form-control.is-valid {
    padding-right: 50px;
}

@media (max-width: 768px) {
    .validation-icon {
        font-size: 24px;
        right: 16px;
    }
}

/* Indicador de progreso */
.progress-indicator {
    animation: fadeIn 0.3s ease-in;
}

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

.progress {
    border-radius: 10px;
    overflow: hidden;
}

.progress-bar {
    transition: width 0.5s ease;
}

/* Acordeón colapsable para alumnos */
.card-header .btn-link {
    width: 100%;
    text-align: left;
    font-weight: normal;
}

.card-header .btn-link:hover {
    text-decoration: none;
    background-color: rgba(0, 0, 0, 0.03);
}

.collapse-icon {
    font-size: 12px;
    margin-left: 8px;
    transition: transform 0.3s ease;
    display: inline-block;
}

.card-header .btn-link:focus {
    box-shadow: none;
    outline: none;
}

/* Animación para el acordeón */
.card-body {
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Vista previa de imagen */
.card-body img {
    transition: transform 0.3s ease;
}

.card-body img:hover {
    transform: scale(1.02);
}

/* Mejorar botones de la vista previa */
@media (max-width: 768px) {
    .card-header .btn-outline-secondary {
        font-size: 14px;
        padding: 6px 12px;
    }
}

/* Estilos para la barra de progreso en móvil */
@media (max-width: 768px) {
    .progress-indicator {
        background: rgba(25, 135, 84, 0.05);
        padding: 12px;
        border-radius: 8px;
        margin-bottom: 1.5rem !important;
    }

    .progress {
        height: 10px !important;
    }

    .progress-indicator small {
        font-size: 13px;
    }
}

/* Fix para el card header del acordeón */
.card-header {
    background-color: #f8f9fa;
    border-bottom: 1px solid rgba(0, 0, 0, 0.125);
}

/* Mejorar el aspecto del botón eliminar en el acordeón */
.card-header .btn-outline-danger {
    padding: 4px 12px;
    font-size: 16px;
    line-height: 1;
}

@media (max-width: 768px) {
    .card-header .btn-outline-danger {
        padding: 6px 10px;
        min-height: 36px;
    }
}

/* Animación para checks verdes */
.validation-icon {
    animation: checkPop 0.3s ease;
}

@keyframes checkPop {
    0% {
        transform: translateY(-50%) scale(0);
    }
    50% {
        transform: translateY(-50%) scale(1.2);
    }
    100% {
        transform: translateY(-50%) scale(1);
    }
}

/* Mejorar contraste de la vista previa */
.card-header small {
    font-weight: 600;
}

/* Estado hover para botones de acordeón en móvil */
@media (max-width: 768px) {
    .card-header {
        -webkit-tap-highlight-color: rgba(0, 0, 0, 0.05);
    }
}

/* Mejorar legibilidad del nombre del alumno en el acordeón */
.card-header h6 {
    font-size: 15px;
    line-height: 1.5;
}

.card-header h6 small {
    font-weight: 400;
    font-size: 13px;
}

/* ============================================
   DASHBOARD RESPONSIVE
   ============================================ */

/* Stats cards en móvil - 2 columnas */
@media (max-width: 768px) {
    .row > [class*="col-md-3"] {
        flex: 0 0 50%;
        max-width: 50%;
        padding: 0.5rem;
    }

    .row > [class*="col-md-3"] .card {
        margin-bottom: 0;
    }

    .row > [class*="col-md-3"] .card-body {
        padding: 0.75rem;
    }

    .row > [class*="col-md-3"] .card-body h3 {
        font-size: 1.25rem;
    }

    .row > [class*="col-md-3"] .card-body h6 {
        font-size: 0.75rem;
    }

    .row > [class*="col-md-3"] .card-body small {
        font-size: 0.7rem;
    }
}

/* Botones de acciones rápidas en móvil - Stack vertical */
@media (max-width: 768px) {
    .d-md-flex.gap-2 {
        flex-direction: column;
    }

    .d-md-flex.gap-2 .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }

    .d-md-flex.gap-2 .btn:last-child {
        margin-bottom: 0;
    }
}

/* Tabla responsive en móvil */
@media (max-width: 768px) {
    .table-responsive {
        border-radius: 8px;
        margin: 0 -0.5rem;
    }

    .table {
        font-size: 0.85rem;
    }

    .table th,
    .table td {
        padding: 0.5rem;
        white-space: nowrap;
    }

    /* Ocultar columnas menos importantes en móvil */
    .table th:nth-child(4),
    .table td:nth-child(4) {
        display: none;
    }
}

/* Header del dashboard en móvil */
@media (max-width: 768px) {
    .container-fluid.mt-4 > .row.mb-4:first-child {
        flex-direction: column;
        text-align: center;
    }

    .container-fluid.mt-4 > .row.mb-4:first-child .col-auto {
        margin-top: 1rem;
    }

    .container-fluid.mt-4 > .row.mb-4:first-child h2 {
        font-size: 1.5rem;
    }
}

/* Login page responsive */
@media (max-width: 768px) {
    .container.mt-5 {
        margin-top: 2rem !important;
    }

    .card.shadow {
        border-radius: 16px;
    }

    .card.shadow .card-body {
        padding: 1.5rem;
    }

    .card-title.text-center {
        font-size: 1.5rem;
    }
}

/* Formulario de registro responsive */
@media (max-width: 768px) {
    .container > .card {
        border-radius: 0;
        margin: 0 -1rem;
        width: calc(100% + 2rem);
    }

    .container > .card > .card-body {
        padding: 1rem;
    }
}