/* ===== ANIMACIÓN PROFESIONAL DE CARGA ===== */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes smooth-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(0.98); }
}

.action-button.loading,
.generate-button.loading {
    position: relative;
    background-image: none !important;
    overflow: hidden;
}

/* Fondo semi-transparente mejorado */
.action-button.loading::after,
.generate-button.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(30, 30, 47, 0.9); /* Usando --dark-bg con transparencia */
    backdrop-filter: blur(4px);
    border: 1px solid rgba(129, 140, 248, 0.3); /* --accent-color con transparencia */
    box-shadow: inset 0 0 15px rgba(129, 140, 248, 0.2); /* Efecto neón interior */
    z-index: 1;
}

/* Contenedor del spinner y texto - Versión mejorada */
.loading-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: none;
    align-items: center;
    gap: 12px;
    z-index: 2;
}

/* Spinner profesional ajustado a tu tema */
.loading-spinner {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: conic-gradient(
        rgba(224, 224, 255, 0.1) 0%,  /* --text-primary con transparencia */
        var(--accent-color) 50%,
        rgba(224, 224, 255, 0.1) 100%
    );
    border: 2px solid rgba(224, 224, 255, 0.2);  /* Borde sutil */
    box-shadow: 0 0 8px rgba(129, 140, 248, 0.3); /* Sombra acentuada */
    animation: spin 0.8s linear infinite;
}

/* Texto con efecto mejorado */
.loading-text {
    color: var(--text-primary);  /* Usando variable de texto principal */
    font-weight: 500;
    font-size: 0.95em;
    letter-spacing: 0.5px;
    animation: smooth-pulse 1.5s ease-in-out infinite;
    position: relative;
    padding-left: 12px;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

/* Línea decorativa mejorada */
.loading-text::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    height: 70%;
    width: 2px;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        var(--accent-color) 50%,
        transparent 100%
    );
    opacity: 0.8;
}

/* Estados de visibilidad */
.button-content {
    display: flex;
    align-items: center;
    gap: 8px;
    transition: opacity 0.3s ease;
}

.generate-button.loading .button-content,
.action-button.loading .button-content {
    opacity: 0;
    pointer-events: none;
}

.generate-button.loading .loading-content,
.action-button.loading .loading-content {
    display: flex;
}

/* Ajuste fino de posicionamiento */
.loading-spinner {
    margin-right: 4px;
    position: relative;
    top: -1px;
}
:root {
    --primary-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);
    --hover-gradient: linear-gradient(135deg, #4f46e5, #7c3aed);
    --dark-bg: #1e1e2f;
    --input-bg: #2d2d42;
    --text-primary: #e0e0ff;
    --accent-color: #818cf8;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Estructura Principal */
.ai-form {
    background: var(--dark-bg);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.form-header {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-left: 0.5rem;
    border-left: 4px solid var(--accent-color);
}

/* Grupo de Inputs Mejorado */
.input-group-enhanced {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

/* Textarea Principal */
.prompt-input {
    background: var(--input-bg);
    border: 2px solid #3f3f5f;
    border-radius: 0.75rem;
    padding: 1.5rem;
    color: var(--text-primary);
    font-size: 1rem;
    line-height: 1.6;
    min-height: 250px;
    transition: var(--transition);
}

.prompt-input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

/* Botones de Acción */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 140px;
}

.action-button {
    position: relative;
    padding: 1rem;
    border: none;
    border-radius: 0.75rem;
    background: var(--primary-gradient);
    color: white;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.action-button:hover {
    background: var(--hover-gradient);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.3);
}

/* Sección de Sugerencias */
.suggestion-container {
    position: relative;
    margin: 2rem 0;
}

.suggestion-input {
    background: var(--input-bg);
    border: 2px dashed #4f4f6f;
    padding: 1.5rem;
    color: var(--text-primary);
    font-style: italic;
    transition: var(--transition);
}

.suggestion-input:hover {
    border-style: solid;
    background: #363652;
}

/* Selector de Modelo Mejorado */
.model-selector {
    background: var(--input-bg);
    border: 2px solid #3f3f5f;
    padding: 1rem 1.5rem;
    color: var(--text-primary);
    border-radius: 0.75rem;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23e0e0ff'%3e%3cpath d='M7 10l5 5 5-5z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.2rem;
}

/* Botón de Generar Animado */
.generate-button {
    width: 100%;
    padding: 1.25rem;
    border: none;
    border-radius: 0.75rem;
    background: var(--primary-gradient);
    color: white;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.generate-button:hover {
    background: var(--hover-gradient);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(99, 102, 241, 0.4);
}

.button-content {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.credit-badge {
    background: var(--input-bg);
    color: var(--accent-color);
    padding: 0.25rem 0.5rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 0.2rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.button-loader {
    position: relative;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
}

.fas.fa-magic {
    color: var(--accent-color);
}

/* Prompts Más Usados */
.prompt-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.prompt-card {
    background: var(--input-bg);
    padding: 1rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition);
    border: 2px solid transparent;
}

.prompt-card:hover {
    border-color: var(--accent-color);
    transform: translateX(5px);
}

.delete-prompt {
    color: #ff6b6b;
    transition: var(--transition);
}

.delete-prompt:hover {
    color: #ff5252;
    transform: scale(1.1);
}


/* Estilo base del mensaje de error modernizado */
.alert-img {
    position: fixed;
    top: 20px;
    left: 50%;
    display: none;
    transform: translateX(-50%);
    background: #ff4444; /* Rojo más moderno */
    color: white;
    padding: 10px 30px;
    border-radius: 8px;
    
    z-index: 2000;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    font-family: 'Segoe UI', sans-serif;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.3px;
    min-width: 300px;
    text-align: center;
    border-left: 4px solid #cc0000; /* Borde lateral para énfasis */
    animation: slideIn 0.3s ease-out forwards;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Animación de entrada más sofisticada */
@keyframes slideIn {
    0% {
        top: -50px;
        opacity: 0;
    }
    100% {
        top: 20px;
        opacity: 1;
    }
}

/* Efecto al ocultar */
.alert.hide {
    animation: slideOut 0.4s ease-in forwards;
}

@keyframes slideOut {
    0% {
        top: 20px;
        opacity: 1;
    }
    100% {
        top: -50px;
        opacity: 0;
    }
}

/* Icono de advertencia (opcional) */
.alert::before {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="white"><path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm1 15h-2v-2h2v2zm0-4h-2V7h2v6z"/></svg>');
    margin-right: 12px;
    vertical-align: middle;
}

/* Efecto hover para mantener visible si el usuario interactúa */
.alert:hover {
    transform: translateX(-50%) scale(1.02);
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

/* Variantes para diferentes tipos de alertas */
.alert.success {
    background: #00C851;
    border-left-color: #007E33;
}

.alert.warning {
    background: #ffbb33;
    border-left-color: #ff8800;
}

.alert.info {
    background: #33b5e5;
    border-left-color: #0099CC;
}

/* Botón de cierre opcional */
.alert .close-btn {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: white;
    cursor: pointer;
    opacity: 0.8;
    transition: opacity 0.2s;
    
}

.alert .close-btn:hover {
    opacity: 1;
}

/* Versión responsive */
@media (max-width: 480px) {
    .alert {
        width: 90%;
        min-width: auto;
        padding: 12px 20px;
        font-size: 13px;
    }
}