:root {
    /* Colores principales */
    --primary-blue: #3b82f6;
    --primary-blue-dark: #1e40af;
    --primary-blue-darker: #1e3a8a;
    --primary-blue-light: #60a5fa;
    --accent-blue: #93c5fd;
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    --red: #EF4444;
    --red-dark: #DC2626;
    --green: #10B981;

    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Bordes */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;

    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Reset y base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
    min-height: 100vh;
}

/* Contenedor principal */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: var(--white);
    padding: var(--spacing-xl) var(--spacing-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
}

.header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.header p {
    font-size: 1.125rem;
    opacity: 0.9;
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-size: 1.125rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    gap: var(--spacing-sm);
    min-height: 48px;
}

.btn svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background-color: var(--primary-blue-dark);
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: var(--white);
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-secondary:hover {
    background-color: var(--gray-50);
    transform: translateY(-1px);
}

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

.btn-danger:hover {
    background-color: var(--red-dark);
    transform: translateY(-1px);
}

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

.btn-success:hover {
    background-color: #059669;
    transform: translateY(-1px);
}

.btn-icon {
    padding: 0.75rem;
    min-width: 48px;
    min-height: 48px;
}

.btn-icon svg {
    width: 20px;
    height: 20px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Cards */
.card {
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

/* Formularios */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--gray-800);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.875rem;
    font-size: 1.125rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    transition: border-color 0.2s ease;
    min-height: 48px;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

/* Checkbox personalizado */
.checkbox-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    user-select: none;
}

.checkbox-input {
    width: 28px;
    height: 28px;
    cursor: pointer;
    accent-color: var(--primary-blue);
}

/* Lista de ejercicios */
.exercise-list {
    list-style: none;
}

.exercise-item {
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    transition: box-shadow 0.2s ease;
}

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

.exercise-content {
    display: flex;
    flex-direction: column;
}

.exercise-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.exercise-title {
    flex: 1;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-800);
}

.exercise-number {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary-blue);
}

.exercise-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
    margin-top: var(--spacing-md);
}

.exercise-description {
    color: var(--gray-600);
    font-size: 1.0625rem;
    line-height: 1.7;
    margin-top: var(--spacing-md);
    padding-left: 42px;
}

/* Controles de colapsar/expandir */
.collapse-controls {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.btn-collapse-control {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.375rem 0.625rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--primary-blue);
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: auto;
}

.btn-collapse-control svg {
    width: 14px;
    height: 14px;
    stroke: currentColor;
}

.btn-collapse-control:hover {
    background: var(--gray-50);
    border-color: var(--primary-blue);
}

/* Botón de toggle individual */
.btn-toggle-collapse {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--gray-500);
    flex-shrink: 0;
}

.btn-toggle-collapse:hover {
    background: var(--gray-100);
    color: var(--primary-blue);
}

.btn-toggle-collapse svg {
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
}

/* Rotación de la flecha según estado */
.exercise-item.collapsed .btn-toggle-collapse svg {
    transform: rotate(0deg);
}

.exercise-item.expanded .btn-toggle-collapse svg {
    transform: rotate(180deg);
}

/* Contenido colapsable */
.exercise-collapsible-content {
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease, margin-top 0.3s ease;
}

/* Estado colapsado: ocultar contenido */
.exercise-item.collapsed .exercise-collapsible-content {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
}

/* Estado expandido: mostrar contenido */
.exercise-item.expanded .exercise-collapsible-content {
    max-height: 2000px;
    opacity: 1;
    margin-top: var(--spacing-md);
}

/* Ajustar header cuando está colapsado */
.exercise-item.collapsed .exercise-header {
    margin-bottom: 0;
}

.exercise-item.expanded .exercise-header {
    margin-bottom: 0;
}


/* Editor de texto enriquecido */
.editor-container {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-200);
    margin-left: var(--spacing-md);
    margin-right: var(--spacing-md);
}

.ql-container {
    font-size: 1.0625rem;
    min-height: 150px;
}

.ql-editor {
    min-height: 150px;
}

/* Visor de paciente */
.patient-exercise {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.patient-exercise h2 {
    font-size: 1.75rem;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-lg);
}

.patient-exercise-description {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--gray-700);
    margin-bottom: var(--spacing-xl);
}

.patient-exercise-description strong {
    color: var(--gray-800);
}

.patient-exercise-description ul,
.patient-exercise-description ol {
    margin-left: var(--spacing-xl);
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.video-container {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    border-radius: var(--radius-md);
    overflow: hidden;
    
}

.video-container video {
    width: 100%;
    height: auto;
    display: block;
}

/* Acciones flotantes */
.floating-actions {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
}

/* Alertas */
.alert {
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    font-size: 1.0625rem;
}

.alert-success {
    background-color: #D1FAE5;
    color: #065F46;
    border-left: 4px solid var(--green);
}

.alert-error {
    background-color: #FEE2E2;
    color: #991B1B;
    border-left: 4px solid var(--red);
}

.alert-info {
    background-color: #DBEAFE;
    color: #1E40AF;
    border-left: 4px solid var(--primary-blue);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

/* Bloquear scroll del body cuando el modal está abierto */
body.modal-open {
    overflow: hidden;
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--gray-800);
}

.modal-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    margin-top: var(--spacing-xl);
}

/* Login */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-blue-darker) 0%, var(--primary-blue-dark) 100%);
}

.login-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: var(--spacing-2xl);
    width: 100%;
    max-width: 420px;
}

.login-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-900);
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.login-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    display: block;
}

/* Responsive */
@media (max-width: 1024px) {
    .header h1 svg {
        width: 28px;
        height: 28px;
    }

    .container {
        padding: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .header {
        padding: var(--spacing-lg) var(--spacing-md);
    }

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

    .header h1 svg {
        width: 24px;
        height: 24px;
    }

    .header p {
        font-size: 1rem;
    }

    .header>.container>div {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: flex-start !important;
    }

    /* Título y botones de colapsar en móvil */
    .exercise-list-header {
        flex-direction: column !important;
        align-items: flex-start !important;
        gap: var(--spacing-sm) !important;
    }

    .exercise-list-header h2 {
        width: 100%;
    }

    .exercise-header {
        flex-wrap: nowrap;
    }

    .exercise-actions {
        width: 100%;
        justify-content: flex-end;
        margin-top: var(--spacing-md);
        order: 3;
    }

    .exercise-description {
        padding-left: var(--spacing-sm);
        padding-right: var(--spacing-sm);
        order: 2;
    }

    .exercise-content {
        display: flex;
        flex-direction: column;
    }

    /* Controles de colapsar en móvil - debajo del título en una fila */
    .collapse-controls {
        flex-direction: row;
        gap: 0.5rem;
        width: 100%;
        margin-top: var(--spacing-sm);
    }

    .btn-collapse-control {
        flex: 1;
        justify-content: center;
        font-size: 0.8125rem;
        padding: 0.5rem 0.75rem;
    }

    /* Ajustar padding de descripción en móvil - reducir el padding excesivo */
    .exercise-description {
        padding-left: var(--spacing-sm) !important;
        padding-right: var(--spacing-sm) !important;
    }


    .floating-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .btn-icon {
        width: auto;
        min-width: 48px;
    }

    .container {
        padding: var(--spacing-md);
    }

    .modal-content {
        width: 90%;
        padding: var(--spacing-xl);
        margin: var(--spacing-2xl) auto;
        max-height: calc(100vh - 6rem);
    }

    .modal-actions {
        flex-direction: column;
    }

    .modal-actions .btn {
        width: 100%;
    }

    /* Botones de cambiar imagen/video en el editor */
    .editor-container .form-group>div {
        flex-direction: column !important;
    }

    .editor-container .form-group>div>div {
        width: 100%;
    }

    .editor-container .form-group>div .btn {
        width: 100%;
        min-height: 48px;
    }

    .editor-container>div:last-child {
        margin-top: var(--spacing-xl);
    }

    /* Ajustar márgenes del formulario de edición en móvil */
    .editor-container {
        margin-top: var(--spacing-lg);
        padding-top: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }

    .btn {
        font-size: 1rem;
        padding: 0.75rem 1.25rem;
    }

    .form-input,
    .form-textarea {
        font-size: 1rem;
    }

    .login-card {
        padding: var(--spacing-lg);
    }

    .login-icon {
        width: 48px;
        height: 48px;
    }

    .login-title {
        font-size: 1.5rem;
    }
}

/* Utilidades */
.text-center {
    text-align: center;
}

.mt-1 {
    margin-top: var(--spacing-md);
}

.mt-2 {
    margin-top: var(--spacing-lg);
}

.mb-1 {
    margin-bottom: var(--spacing-md);
}

.mb-2 {
    margin-bottom: var(--spacing-lg);
}

.hidden {
    display: none !important;
}

/* Loading spinner */
.spinner {
    border: 4px solid var(--gray-200);
    border-top: 4px solid var(--primary-blue);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: var(--spacing-xl) auto;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}
/* ============================================
   ESTILOS PARA VISOR DEL PACIENTE
   ============================================ */

/* Ejercicio del paciente - Card principal */
.patient-exercise {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    transition: all 0.3s ease;
}

.patient-exercise:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

/* Header del ejercicio con toggle */
.patient-exercise-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    user-select: none;
}

.patient-exercise-header h2 {
    flex: 1;
    color: var(--primary-blue);
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
}

/* Botón de toggle (igual que admin) */
.patient-exercise .btn-toggle-collapse {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--gray-500);
    flex-shrink: 0;
}

.patient-exercise .btn-toggle-collapse:hover {
    background: var(--gray-100);
    color: var(--primary-blue);
}

.patient-exercise .btn-toggle-collapse svg {
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
}

/* Rotación de flecha según estado */
.patient-exercise.collapsed .btn-toggle-collapse svg {
    transform: rotate(0deg);
}

.patient-exercise.expanded .btn-toggle-collapse svg {
    transform: rotate(180deg);
}

/* Contenido colapsable */
.patient-exercise-collapsible {
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease, margin-top 0.3s ease;
}

.patient-exercise.collapsed .patient-exercise-collapsible {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
}

.patient-exercise.expanded .patient-exercise-collapsible {
    max-height: 3000px;
    opacity: 1;
    margin-top: var(--spacing-lg);
}

/* Descripción del ejercicio */
.patient-exercise-description {
    color: var(--gray-600);
    font-size: 1.0625rem;
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

/* Video estilizado - inspirado en la imagen */
.video-container {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-xl);
}

.video-container video {
    max-width: 600px;
    width: 100%;
    border-radius: 12px;
    border: 3px solid var(--primary-blue);
    background: var(--gray-900);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

/* Responsive para video */
@media (max-width: 768px) {
    .patient-exercise-header h2 {
        font-size: 1.25rem;
    }
    
    .video-container video {
        max-width: 100%;
        border-width: 3px;
        outline-width: 1px;
    }
    
    .patient-exercise {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .patient-exercise-header h2 {
        font-size: 1.125rem;
    }
    
    .video-container video {
        border-width: 2px;
    }
}