/* ===== Variables (paleta del logo Duaicode) ===== */
:root {
    --bg-dark: #000000;
    --bg-card: #0d0d0d;
    --bg-elevated: #141414;
    --text: #ffffff;
    --text-muted: #9ca3af;
    /* Cyan del logo */
    --accent-cyan: #00D4FF;
    --accent-cyan-dark: #00A7D4;
    /* Verde menta / teal del logo */
    --accent-mint: #00E080;
    --accent-mint-light: #00F290;
    --accent-mint-dark: #00C96F;
    --accent-glow: rgba(0, 212, 255, 0.2);
    --accent-glow-mint: rgba(0, 224, 128, 0.2);
    --border: rgba(255, 255, 255, 0.08);
    --radius: 12px;
    --radius-lg: 20px;
    --font: 'Plus Jakarta Sans', -apple-system, sans-serif;
    --transition: 0.25s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Logo ===== */
.logo {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    color: inherit;
}

.logo-img {
    height: 120px;
    width: auto;
    display: block;
    object-fit: contain;
}

.logo-img-footer {
    height: 38px;
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: background var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.92);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 var(--border);
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition);
}

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

.nav-cta {
    color: var(--accent-mint) !important;
}

.nav-cta:hover {
    color: var(--accent-cyan) !important;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 1px;
    transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 0 80px;
    text-align: center;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 50% at 50% -20%, var(--accent-glow), transparent 50%),
                radial-gradient(ellipse 60% 40% at 80% 60%, var(--accent-glow-mint), transparent 50%);
    pointer-events: none;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black, transparent);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 24px;
    letter-spacing: 0.02em;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.hero .highlight {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-mint));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}


.hero-lead {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 540px;
    margin: 0 auto 36px;
}

.hero-btns {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: var(--radius);
    font-family: var(--font);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
    cursor: pointer;
    border: none;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-mint));
    color: var(--bg-dark);
    box-shadow: 0 4px 24px var(--accent-glow), 0 4px 12px var(--accent-glow-mint);
}

.btn-primary:hover {
    box-shadow: 0 8px 32px var(--accent-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--text-muted);
    opacity: 0.9;
}

.btn-block { width: 100%; }

/* Estado de carga del botón de contacto */
.btn {
    position: relative;
}
.btn .btn-text {
    display: inline;
}
.btn .btn-loading {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    display: none;
    align-items: center;
    justify-content: center;
    gap: 10px;
}
.btn.is-loading .btn-text {
    visibility: hidden;
}
.btn.is-loading .btn-loading {
    display: inline-flex;
}
.btn.is-loading {
    pointer-events: none;
    cursor: wait;
}

.btn-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(0, 0, 0, 0.2);
    border-top-color: currentColor;
    border-radius: 50%;
    animation: btnSpin 0.7s linear infinite;
}
@keyframes btnSpin {
    to { transform: rotate(360deg); }
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--text-muted), transparent);
    border-radius: 1px;
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.8); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ===== Sections global ===== */
.section {
    padding: 100px 0;
}

.section-label {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent-mint);
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    letter-spacing: -0.09em;
    margin-bottom: 48px;
    max-width: 670px;
}

.section-title-center {
    max-width: none;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

/* ===== Servicios ===== */
.section-servicios {
    background: var(--bg-card);
}

.servicios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.servicio-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.servicio-card:hover {
    border-color: rgba(0, 212, 255, 0.35);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -20px rgba(0, 0, 0, 0.5);
}

.servicio-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-mint));
    color: var(--bg-dark);
    font-size: 1.2rem;
    border-radius: var(--radius);
    margin-bottom: 20px;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.servicio-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.servicio-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.65;
}

/* ===== Nosotros ===== */
.nosotros-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.nosotros-item {
    padding-left: 20px;
    border-left: 3px solid var(--accent-mint);
}

.nosotros-num {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-mint);
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.nosotros-item h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.nosotros-item p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* ===== Planes ===== */
.section-planes {
    background: var(--bg-card);
}

.planes-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.plan-card {
    position: relative;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px 24px;
    text-align: center;
    transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.plan-card:hover {
    border-color: rgba(34, 211, 238, 0.25);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -20px rgba(0, 0, 0, 0.5);
}

.plan-destacado {
    border-color: var(--accent-mint);
    box-shadow: 0 0 0 1px var(--accent-mint), 0 20px 40px -20px rgba(45, 212, 191, 0.2);
}

.plan-destacado:hover {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 1px var(--accent-cyan), 0 24px 48px -20px var(--accent-glow);
}

.badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-mint));
    color: var(--bg-dark);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 100px;
}

.plan-card h3 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.precio {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 24px;
}

.precio span {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
}

.plan-card ul {
    list-style: none;
    text-align: left;
    margin-bottom: 28px;
}

.plan-card li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
    color: var(--text-muted);
}

.plan-card li:last-child {
    border-bottom: none;
}

.btn-plan {
    display: block;
    padding: 14px 24px;
    background: var(--bg-dark);
    color: var(--text);
    text-decoration: none;
    font-weight: 600;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.plan-destacado .btn-plan {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-mint));
    color: var(--bg-dark);
    border: none;
}

.btn-plan:hover {
    background: var(--bg-elevated);
    border-color: var(--accent-mint);
    color: var(--accent-mint);
}

.plan-destacado .btn-plan:hover {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-mint-light));
    color: var(--bg-dark);
    opacity: 0.95;
}

/* ===== Contacto ===== */
.section-contacto {
    background: var(--bg-dark);
}

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

.contacto-intro {
    color: var(--text-muted);
    margin-bottom: 32px;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

.form-message {
    max-width: 520px;
    margin: 0 auto 24px;
    padding: 20px 24px;
    border-radius: var(--radius);
    font-size: 1rem;
    text-align: center;
}

.form-message-success {
    background: rgba(0, 224, 128, 0.18);
    border: 1px solid rgba(0, 224, 128, 0.5);
    color: var(--accent-mint);
}

.form-message-success .form-message-icon {
    display: inline-block;
    width: 26px;
    height: 26px;
    line-height: 26px;
    margin-right: 10px;
    background: var(--accent-mint);
    color: #000;
    border-radius: 50%;
    font-weight: bold;
    font-size: 0.95rem;
    vertical-align: middle;
}

.form-message-success strong {
    font-size: 1.05rem;
}

.form-message-error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.4);
    color: #f87171;
}

.contact-form {
    max-width: 520px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
    text-align: left;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 16px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: var(--font);
    font-size: 1rem;
    transition: border-color var(--transition);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--text-muted);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-mint);
}

.contact-form textarea {
    resize: vertical;
    min-height: 140px;
}

.contacto-email {
    margin-top: 24px;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.contacto-email a {
    color: var(--accent-mint);
    text-decoration: none;
}

.contacto-email a:hover {
    text-decoration: underline;
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    padding-top: 48px;
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 32px;
}

.footer-brand p {
    margin-top: 12px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
}

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

.footer-contact a {
    color: var(--accent-mint);
    text-decoration: none;
    font-weight: 500;
}

.footer-contact a:hover {
    text-decoration: underline;
}

.footer-bottom {
    margin-top: 48px;
    padding: 24px 0;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--text-muted);
}


/* ===== WhatsApp ===== */
.whatsapp-btn {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    background: #25d366;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: transform var(--transition), box-shadow var(--transition);
}

.whatsapp-btn:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 28px rgba(37, 211, 102, 0.5);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100vh;
        background: var(--bg-elevated);
        flex-direction: column;
        padding: 100px 32px 32px;
        gap: 24px;
        box-shadow: -4px 0 24px rgba(0, 0, 0, 0.3);
        transform: translateX(100%);
        transition: transform var(--transition);
    }

    .nav-links.open {
        transform: translateX(0);
    }

    .menu-toggle {
        display: flex;
        z-index: 1001;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-btns {
        flex-direction: column;
    }

    .btn { width: 100%; }

    .planes-container {
        grid-template-columns: 1fr;
    }
}