/* Custom Properties - Variables según SRS */
:root {
    --color-brand: #0D1F2D;
    --color-accent: #00B4D8;
    --color-accent-alt: #48CAE4;
    --color-surface: #0A3245;
    --color-bg-light: #F0F7FA;
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #90C4D8;
    --color-text-dark: #1C2B3A;
    --color-success: #2ECC71;
    --color-paypal: #0070BA;
    --color-whatsapp: #25D366;

    --font-heading: 'Space Grotesk', system-ui, -apple-system, sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;
    
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease-in-out;
}

/* Reset Básico */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    color: var(--color-text-dark);
    line-height: 1.6;
    background-color: var(--color-bg-light);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: inherit;
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(13, 31, 45, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo a {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo img {
    height: 32px;
    width: auto;
}

.logo span {
    color: var(--color-accent);
}

.nav-links {
    display: flex;
    gap: var(--space-lg);
    align-items: center;
}

.nav-links a {
    color: var(--color-text-primary);
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--color-accent);
}

.hamburger-menu {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}

.hamburger-menu .bar {
    width: 25px;
    height: 3px;
    background-color: var(--color-text-primary);
    transition: var(--transition-fast);
}

.hamburger-menu.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
.hamburger-menu.active .bar:nth-child(2) {
    opacity: 0;
}
.hamburger-menu.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-brand);
}

.btn-primary:hover {
    background-color: var(--color-accent-alt);
    transform: scale(1.03);
    box-shadow: 0 0 15px rgba(0, 180, 216, 0.4);
}

.btn-outline {
    border: 1px solid var(--color-accent);
    color: var(--color-accent) !important;
}

.btn-outline:hover {
    background-color: rgba(0, 180, 216, 0.1);
}

.btn-outline-white {
    border: 1px solid var(--color-text-primary);
    color: var(--color-text-primary);
}

.btn-outline-white:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Footer Section */
.footer {
    background-color: var(--color-brand);
    color: var(--color-text-primary);
    padding: var(--space-xl) 0 var(--space-lg);
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.footer-brand .logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.footer-brand span {
    color: var(--color-accent);
}

.footer-brand p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-links a {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--color-accent);
}

.footer-copy {
    text-align: center;
    color: rgba(255,255,255,0.4);
    font-size: 0.85rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: var(--space-md);
}

/* Lead Section Pre-Footer */
.lead-section {
    background-color: var(--color-bg-light);
    padding: var(--space-xl) 0;
}

.lead-box {
    background-color: var(--color-text-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.lead-text h2 {
    color: var(--color-brand);
    margin-bottom: var(--space-sm);
}

.lead-text p {
    color: var(--color-text-dark);
    opacity: 0.8;
}

.lead-form .form-group {
    margin-bottom: var(--space-md);
}

.lead-form label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: 500;
    font-size: 0.9rem;
}

.lead-form input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ccc;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
}

.lead-form input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px rgba(0, 180, 216, 0.2);
}

.form-msg {
    margin-top: var(--space-md);
    font-size: 0.9rem;
    text-align: center;
}

.form-msg.success { color: var(--color-success); }
.form-msg.error { color: #e74c3c; }

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--color-brand);
        flex-direction: column;
        padding: var(--space-lg) 0;
    }
    .nav-links.active {
        display: flex;
    }
    .hamburger-menu {
        display: flex;
    }
    .lead-box {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    .footer-content {
        flex-direction: column;
    }
    .footer-links {
        flex-direction: column;
        gap: var(--space-sm);
    }
}