:root {
    /* Colores Principales */
    --color-primary: #b91c1c;        /* Rojo principal */
    --color-primary-dark: #991b1b;   /* Rojo oscuro (hover) */
    --color-primary-light: #fef2f2; /* Rojo muy claro */

    /* Colores Neutrales */
    --color-dark: #111827;           /* Gris muy oscuro */
    --color-gray-900: #1f2937;       /* Gris oscuro */
    --color-gray-700: #374151;       /* Gris medio */
    --color-gray-300: #d1d5db;       /* Gris claro */
    --color-gray-100: #f3f4f6;       /* Gris muy claro */
    --color-gray-50: #f9fafb;        /* Casi blanco */
    --color-white: #ffffff;

    /* Colores de Estado */
    --color-success: #10b981;
    --color-error: #ef4444;
    --color-warning: #f59e0b;

    --font-primary: 'Inter', sans-serif;

    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

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

    --whatsapp-button-size: 60px;
    --whatsapp-offset: 20px;
    --transition-speed: 0.3s;
}

/* ============================================
   ESTILOS GLOBALES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    overflow-x: hidden;
    color: var(--color-gray-700);
    background-color: var(--color-gray-50);
    line-height: 1.6;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero-bg {
    background-image: linear-gradient(
            rgba(17, 24, 39, 0.85),
            rgba(17, 24, 39, 0.85)
    ), var(--hero-image);
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

/* ============================================
   ANIMACIONES DE SCROLL
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   BOTONES
   ============================================ */
.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    font-weight: 700;
    padding: 0.75rem 2rem;
    border-radius: 0.5rem;
    transition: all var(--transition-normal);
    display: inline-block;
    text-decoration: none;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: scale(1.05);
}

.btn-secondary {
    background-color: var(--color-white);
    color: var(--color-dark);
    font-weight: 700;
    padding: 0.75rem 2rem;
    border-radius: 0.5rem;
    transition: all var(--transition-normal);
    display: inline-block;
    text-decoration: none;
    border: none;
    cursor: pointer;
}

.btn-secondary:hover {
    background-color: var(--color-gray-100);
    transform: scale(1.05);
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background-color: var(--color-white);
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-slow);
}

.card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-8px);
}

.card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 4rem;
    width: 4rem;
    border-radius: 0.75rem;
    background-color: var(--color-primary-light);
    margin-bottom: 1.5rem;
}

.card-icon svg {
    height: 2rem;
    width: 2rem;
    color: var(--color-primary);
}

/* ============================================
   HEADER
   ============================================ */
header {
    background-color: var(--color-dark);
    box-shadow: var(--shadow-md);
}

header a {
    transition: color var(--transition-normal);
}

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

/* ============================================
   WHATSAPP FLOTANTE
   ============================================ */
.whatsapp-float-container {
    position: fixed;
    bottom: var(--whatsapp-offset);
    left: var(--whatsapp-offset);
    z-index: 1000;
    width: var(--whatsapp-button-size);
    height: var(--whatsapp-button-size);
}

.whatsapp-button {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3;

    background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
    color: white;
    border-radius: 50%;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 32px;
    text-decoration: none;

    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
    animation: pulse 2s infinite;
}

.whatsapp-animation {
    position: absolute;
    bottom: 5px;
    left: calc(var(--whatsapp-button-size) - 50px);
    width: 180px;
    height: 120px;
    z-index: 2;
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity var(--transition-speed) ease, transform var(--transition-speed) ease;
    pointer-events: none;
}

.whatsapp-message-bubble {
    position: absolute;
    bottom: 100px;
    left: calc(var(--whatsapp-button-size) + 15px);
    z-index: 1;

    background-color: #f0fdf4;
    color: #166534;
    padding: 12px 16px;
    border-radius: 15px;
    border: 1px solid #bbf7d0;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);

    max-width: 100rem;
    font-size: 14px;
    font-weight: 500;

    opacity: 0;
    transform: translateY(10px);
    transition: opacity var(--transition-speed) ease, transform var(--transition-speed) ease;
    transition-delay: 0.1s;
    pointer-events: none;
}

/* Flecha de la burbuja apuntando al botón */
.whatsapp-message-bubble::after {
    content: '';
    position: absolute;
    left: 15px;
    bottom: -8px;
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid #f0fdf4;
}

.whatsapp-float-container:hover .whatsapp-message-bubble,
.whatsapp-float-container:hover .whatsapp-animation {
    opacity: 1;
    transform: translate(0, 0);
    pointer-events: auto;
}

.whatsapp-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    }
    50% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.6);
    }
}
/* ============================================
   FORMULARIOS
   ============================================ */
input[type="text"],
input[type="email"],
input[type="tel"],
textarea,
select {
    width: 100%;
    background-color: var(--color-gray-100);
    border: 1px solid var(--color-gray-300);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    transition: all var(--transition-normal);
    font-family: var(--font-primary);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(185, 28, 28, 0.1);
}

label {
    font-weight: 600;
    color: var(--color-gray-900);
    display: block;
    margin-bottom: 0.5rem;
}

/* ============================================
   ALERTAS
   ============================================ */
.alert {
    padding: 1rem 1.25rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.alert-success {
    background-color: #d1fae5;
    border: 1px solid #6ee7b7;
    color: #065f46;
}

.alert-error {
    background-color: #fee2e2;
    border: 1px solid #fca5a5;
    color: #991b1b;
}

/* ============================================
   UTILIDADES
   ============================================ */
.text-primary {
    color: var(--color-primary);
}

.bg-primary {
    background-color: var(--color-primary);
}

.text-center {
    text-align: center;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .whatsapp-float-container {
        bottom: 15px;
        left: 15px;
        flex-direction: column-reverse;
        align-items: flex-start;
    }


    .whatsapp-message-bubble {
        max-width: 180px;
        font-size: 13px;
        margin-bottom: 10px;
    }

    .whatsapp-message-bubble::after {
        bottom: -8px;
        right: 15px;
        left: auto;
        border-left: 8px solid transparent;
        border-right: 8px solid transparent;
        border-top: 8px solid #f0fdf4;
    }

    .whatsapp-button {
        width: 55px;
        height: 55px;
        font-size: 28px;
    }
}

/* ============================================
   SCROLL SUAVE
   ============================================ */
html {
    scroll-behavior: smooth;
}

/* ============================================
   EFECTOS HOVER EN VALORES
   ============================================ */
.valor-card {
    padding: 1rem;
    border: 2px solid transparent;
    border-radius: 0.5rem;
    transition: all var(--transition-slow);
}

.valor-card:hover {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
    transform: translateY(-4px);
}

.valor-icon {
    background-color: var(--color-primary-light);
    padding: 0.75rem;
    border-radius: 50%;
    display: inline-flex;
}

.valor-icon svg {
    width: 1.5rem;
    height: 1.5rem;
    color: var(--color-primary);
}