:root {
    --primary: #0f172a;
    --primary-light: #1e293b;
    --accent: #3b82f6;
    --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #2dd4bf 100%);
    --whatsapp: #25d366;
    --text-main: #334155;
    --text-muted: #64748b;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --white: #ffffff;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --container-width: 1320px;
    --shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
    --border-color: rgba(0, 0, 0, 0.06);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-main);
    line-height: 1.7;
    overflow-x: hidden;
}

/* Layout */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 3rem;
}

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

ul {
    list-style: none;
}

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

/* Typography */
h1, h2, h3 {
    color: var(--primary);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 3rem;
}

.text-gradient {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    gap: 0.5rem;
    font-size: 1rem;
}

.btn-whatsapp {
    background-color: var(--whatsapp);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(37, 211, 102, 0.4);
}

.btn-whatsapp:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
    filter: brightness(1.1);
}

.btn-secondary {
    background-color: var(--primary);
    color: var(--white);
}

.btn-secondary:hover {
    background-color: var(--primary-light);
    transform: translateY(-3px);
}

.btn-lg {
    padding: 1.2rem 2.5rem;
    font-size: 1.2rem;
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(248, 250, 252, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    z-index: 1001;
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-list {
    display: flex;
    gap: 2rem;
}

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

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

.nav-cta {
    display: inline-flex;
}

.nav-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 1001;
}

/* Hero Section */
.hero {
    padding: 160px 0 80px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    align-items: center;
}

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

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-btns {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    justify-content: center;
    align-items: center;
}

.hero-btns .btn {
    width: 100%;
    max-width: 320px;
}

.hero-visual {
    position: relative;
    text-align: center;
}

.mockup-container {
    position: relative;
    z-index: 1;
}

.mockup-img {
    border-radius: 20px;
    box-shadow: var(--shadow);
}

/* Problem Section */
.problem {
    padding: 80px 0;
}

.problem-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.problem-card {
    background: var(--white);
    padding: 3rem 2.5rem;
    border-radius: 24px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

.problem-card i {
    font-size: 2rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
    display: block;
}

.problem-card h3 {
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.problem-card p {
    color: var(--text-muted);
}

/* Solution Section */
.solution {
    background-color: var(--primary);
    color: var(--white);
    padding: 80px 0;
}

.solution h2 {
    color: var(--white);
}

.solution-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.solution-card {
    background: var(--primary-light);
    padding: 3.5rem 2.5rem;
    border-radius: 24px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.05);
}

.solution-card:hover {
    background: #2d3a4f;
    transform: translateY(-8px);
}

.solution-card .icon-box {
    width: 60px;
    height: 60px;
    background: var(--accent-gradient);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 1.5rem;
    color: var(--white);
}

.solution-card h3 {
    color: var(--white);
    margin-bottom: 1rem;
}

.solution-card p {
    color: #94a3b8;
}

/* Includes Section */
.includes {
    padding: 80px 0;
}

.includes-wrapper {
    display: flex;
    justify-content: center;
}

.includes-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.2rem;
}

.include-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    font-weight: 500;
    font-size: 1.1rem;
    padding: 0.5rem 0;
}

.include-item i {
    color: var(--whatsapp);
    font-size: 1.3rem;
}

/* Portfolio Section */
.portfolio {
    padding: 80px 0;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

.portfolio-item {
    background: var(--white);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.portfolio-item:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow);
}

.portfolio-img img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.portfolio-info {
    padding: 2rem;
}

.portfolio-info h3 {
    margin-bottom: 0.5rem;
}

.portfolio-info p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.btn-link {
    font-weight: 600;
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-link:hover {
    text-decoration: underline;
}

/* Process Section */
.process {
    background-color: var(--bg-white);
    padding: 100px 0;
}

.process-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
}

.process-step {
    text-align: center;
    position: relative;
    padding: 0 1rem;
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--accent-gradient);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.2rem;
    margin: 0 auto 1.5rem;
}

.process-step h3 {
    margin-bottom: 1rem;
}

.process-step p {
    color: var(--text-muted);
}

/* Pricing Section */
.pricing {
    padding: 80px 0;
}

.pricing-card {
    background: var(--accent-gradient);
    color: var(--white);
    padding: 4rem 2rem;
    border-radius: 30px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.3);
}

.pricing-card h2 {
    color: var(--white);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.pricing-card .price {
    display: block;
    font-size: 3.5rem;
    margin: 1rem 0;
}

.pricing-card p {
    margin-bottom: 2rem;
    opacity: 0.9;
    font-size: 1.1rem;
}

/* Final CTA */
.cta-final {
    padding: 100px 0;
    text-align: center;
    background: var(--bg-light);
}

.cta-final h2 {
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Testimonios Section */
.testimonials {
    padding: 80px 0;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.testimonial-card {
    background: var(--white);
    padding: 3.5rem 3rem;
    border-radius: 24px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    position: relative;
    transition: var(--transition);
}

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

.testimonial-content p {
    font-style: italic;
    font-size: 1.2rem;
    color: var(--text-main);
    margin-bottom: 1.5rem;
    position: relative;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--accent);
}

/* FAQ Section */
.faq {
    padding: 80px 0;
}

.faq-wrapper {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    gap: 1rem;
}

.faq-item {
    background: var(--white);
    border-radius: 15px;
    border: 1px solid rgba(0,0,0,0.05);
    overflow: hidden;
    transition: var(--transition);
}

.faq-question {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
}

.faq-question:hover {
    background-color: rgba(59, 130, 246, 0.05);
}

.faq-item.faq-open .faq-answer {
    max-height: 500px;
    padding: 0 1.5rem 1.5rem;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(0,0,0,0.01);
}

.faq-answer p {
    color: var(--text-muted);
    line-height: 1.6;
}

/* WhatsApp Float */
.whatsapp-float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 40px;
    right: 40px;
    background-color: var(--whatsapp);
    color: var(--white);
    border-radius: 50px;
    text-align: center;
    font-size: 30px;
    box-shadow: 2px 2px 3px #999;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse-whatsapp 2s infinite;
}

@keyframes pulse-whatsapp {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
    70% { transform: scale(1.05); box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* Footer */
.footer {
    background-color: var(--primary);
    color: var(--white);
    padding: 80px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-bottom: 50px;
}

.footer-brand .logo {
    color: var(--white);
    font-size: 1.8rem;
    margin-bottom: 1rem;
    display: block;
}

.footer-brand p {
    color: #94a3b8;
    max-width: 300px;
}

.footer-links h4 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.footer-nav li {
    margin-bottom: 1rem;
}

.footer-nav a {
    color: #94a3b8;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.footer-nav a:hover {
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #64748b;
    font-size: 0.9rem;
}

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Responsive Design */
@media (max-width: 767px) {
    .container {
        padding: 0 2rem;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(248, 250, 252, 0.98);
        backdrop-filter: blur(20px);
        padding: 3rem 2rem;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
        text-align: center;
        gap: 2rem;
        z-index: 1000;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-list {
        display: flex;
        flex-direction: column;
        gap: 1.5rem;
    }

    .nav-list a {
        font-size: 1.2rem;
        font-weight: 600;
    }

    .nav-cta {
        display: inline-flex;
        width: fit-content;
        margin: 0 auto;
    }

    .nav-toggle {
        display: block;
    }

    .hero {
        padding: 120px 0 60px;
        gap: 3rem;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }

    .hero-btns {
        flex-direction: column;
        align-items: center;
    }

    .hero-btns .btn {
        width: 100%;
        max-width: 320px;
    }

    .problem-grid, .solution-grid, .portfolio-grid, .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .includes-list {
        width: 85%;
        margin: 0 auto;
    }

    .process-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand, .footer-links {
        text-align: center;
    }

    .footer-nav {
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1.5rem;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }
}

@media (min-width: 768px) {
    h1 {
        font-size: 4rem;
    }

    .nav-menu {
        display: flex;
    }

    .nav-toggle {
        display: none;
    }

    .hero {
        grid-template-columns: 1fr 1fr;
        padding: 180px 0 120px;
    }

    .hero-content {
        text-align: left;
    }

    .hero-content p {
        margin-left: 0;
    }

    .hero-btns {
        flex-direction: row;
        justify-content: flex-start;
    }

    .hero-btns .btn {
        width: auto;
        max-width: none;
        min-width: 240px;
    }

    .problem-grid, .solution-grid, .portfolio-grid, .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .includes-wrapper {
        grid-template-columns: 1fr 1fr;
    }

    .includes-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-grid {
        grid-template-columns: repeat(4, 1fr);
        position: relative;
    }

    .process-step {
        position: relative;
        z-index: 1;
    }

    .process-step::before {
        content: '';
        position: absolute;
        top: 25px;
        left: 50%;
        width: 100%;
        height: 2px;
        background: var(--border-color);
        z-index: -1;
    }

    .process-step:last-child::before {
        display: none;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .footer-brand {
        text-align: left;
    }

    .footer-links {
        text-align: right;
    }

    .footer-nav {
        align-items: flex-end;
    }
}