/* =========================================
   VARIABLES Y TOKENS DE DISEÑO
   (Basados en la imagen del Logo MASTER G)
   ========================================= */
:root {
    /* Paleta de Colores Principales */
    --color-primary: #004aa6;
    /* Azul base del engranaje y texto "MASTER G" */
    --color-primary-dark: #003377;
    /* Azul oscuro para hovers */
    --color-primary-light: #337acc;
    /* Azul más claro para fondos suaves */

    --color-secondary: #5c5c5c;
    /* Gris oscuro del texto "ELECTRONICS" */
    --color-secondary-dark: #3a3a3a;

    --color-accent: #f07d00;
    /* Naranja brillante del punto en el logo */
    --color-accent-hover: #d26e00;

    /* Colores Neutrales y Fondos */
    --color-bg-base: #f8f9fa;
    /* Inspirado en el fondo gris claro de la imagen */
    --color-bg-white: #ffffff;
    --color-text-main: #333333;
    --color-text-muted: #6b6b6b;
    --color-border: #e2e8f0;

    /* Tipografía */
    /* Montserrat para encabezados (limpia, geométrica, moderna, como el logo) */
    --font-heading: 'Montserrat', sans-serif;
    /* Inter para textos (excelente legibilidad y aspecto técnico) */
    --font-body: 'Inter', sans-serif;

    /* Tamaños y Espaciados */
    --space-xs: 0.5rem;
    /* 8px */
    --space-sm: 1rem;
    /* 16px */
    --space-md: 1.5rem;
    /* 24px */
    --space-lg: 2rem;
    /* 32px */
    --space-xl: 3rem;
    /* 48px */
    --space-xxl: 5rem;
    /* 80px */

    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;

    /* Sombras (Tonalidad vinculada al color primario) */
    --shadow-sm: 0 1px 3px rgba(0, 74, 166, 0.08);
    --shadow-md: 0 4px 6px -1px rgba(0, 74, 166, 0.1), 0 2px 4px -1px rgba(0, 74, 166, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 74, 166, 0.1), 0 4px 6px -2px rgba(0, 74, 166, 0.05);
}

/* =========================================
   RESET Y BASE
   ========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg-base);
    color: var(--color-text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* =========================================
   TIPOGRAFÍA ESTRUCTURAL
   ========================================= */
h1,
h2,
h3,
h4,
h5,
h6,
.font-heading {
    font-family: var(--font-heading);
    color: var(--color-primary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-sm);
    /* Ligero espaciado de letras similar a logo técnico */
    letter-spacing: -0.02em;
}

h1 {
    font-size: 3.5rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--space-sm);
}

/* Esta clase imita el subtítulo "ELECTRONICS" en el logo */
.subtitle {
    font-family: var(--font-heading);
    color: var(--color-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.25em;
    /* Separación amplia de letras */
    font-size: 0.9rem;
}

/* Utilerías de Texto */
.text-muted {
    color: var(--color-text-muted);
}

.text-primary {
    color: var(--color-primary);
}

.text-secondary {
    color: var(--color-secondary);
}

.text-accent {
    color: var(--color-accent);
}

.text-white {
    color: var(--color-bg-white);
}

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

/* =========================================
   UTILERÍAS DE LAYOUT
   ========================================= */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* =========================================
   COMPONENTES
   ========================================= */

/* --- Botones --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--border-radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    text-align: center;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-bg-white);
    box-shadow: 0 4px 10px rgba(0, 74, 166, 0.2);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 74, 166, 0.3);
    color: var(--color-bg-white);
}

.btn-accent {
    background-color: var(--color-accent);
    color: var(--color-bg-white);
    box-shadow: 0 4px 10px rgba(240, 125, 0, 0.2);
}

.btn-accent:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(240, 125, 0, 0.3);
    color: var(--color-bg-white);
}

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

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

/* --- Tarjetas (Cards) --- */
.card {
    background-color: var(--color-bg-white);
    border-radius: var(--border-radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--color-border);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.card-accent {
    background-color: var(--color-primary);
    color: var(--color-bg-white);
    border-color: var(--color-primary-dark);
}

.card-accent h3,
.card-accent p {
    color: var(--color-bg-white);
}

/* =========================================
   ESTRUCTURAS DE DEMOSTRACIÓN (OPCIONAL)
   ========================================= */
/* Navbar */
.navbar {
    background-color: var(--color-bg-white);
    box-shadow: var(--shadow-sm);
    padding: var(--space-sm) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-logo img {
    height: 70px;
    object-fit: contain;
}

.navbar-menu {
    list-style: none;
    display: flex;
    gap: var(--space-lg);
    align-items: center;
}

.navbar-menu .nav-link {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-secondary);
    text-transform: uppercase;
    font-size: 0.9rem;
}

.navbar-menu .nav-link:hover {
    color: var(--color-primary);
}

/* Header Hero */
.hero {
    padding: var(--space-xxl) 0;
    text-align: center;
    background: linear-gradient(to bottom, var(--color-bg-base) 0%, var(--color-bg-white) 100%);
    border-bottom: 1px solid var(--color-border);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero .subtitle {
    margin-bottom: var(--space-md);
    display: block;
}

.hero .actions {
    margin-top: var(--space-lg);
    display: flex;
    justify-content: center;
    gap: var(--space-md);
}

/* Secciones genéricas */
.section {
    padding: var(--space-xxl) 0;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
}

/* =========================================
   FOOTER / CONTACT INFO
   ========================================= */
.footer {
    background-color: var(--color-primary-dark);
    color: var(--color-bg-base);
    padding: var(--space-xxl) 0 var(--space-sm) 0;
    margin-top: var(--space-xxl);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-col h4 {
    color: var(--color-accent);
    margin-bottom: var(--space-md);
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-sm);
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.5;
}

.footer-links li strong {
    color: var(--color-bg-white);
    font-weight: 600;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-md);
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

/* =========================================
   FLOATING BUTTONS
   ========================================= */
.floating-buttons {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    z-index: 1000;
}

.float-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
    border: none;
    outline: none;
}

.float-btn svg {
    width: 30px;
    height: 30px;
}

.float-btn:hover {
    transform: scale(1.1) translateY(-4px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

/* WhatsApp Button */
.float-wa {
    background-color: #25D366;
    /* Official WhatsApp color */
}

/* Scroll To Top Button */
.float-up {
    background-color: var(--color-primary);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.float-up.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.float-up.show:hover {
    transform: scale(1.1) translateY(-4px);
}