:root {
    --primary: #0284c7; /* Ocean Blue */
    --primary-hover: #0369a1;
    --secondary: #38bdf8;
    --bg-main: #f0f9ff;
    --bg-glass: rgba(255, 255, 255, 0.85);
    --border-glass: rgba(0, 0, 0, 0.08);
    --text-main: #0c4a6e;
    --text-muted: #475569;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    background-image: 
        linear-gradient(rgba(2, 132, 199, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(2, 132, 199, 0.05) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: center center;
}

/* Background Effects */
.bg-gradient-1 {
    position: fixed;
    top: -15%;
    left: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(2,132,199,0.25) 0%, rgba(240,249,255,0) 60%);
    border-radius: 50%;
    z-index: -1;
    filter: blur(80px);
}

.bg-gradient-2 {
    position: fixed;
    bottom: -20%;
    right: -10%;
    width: 70vw;
    height: 70vw;
    background: radial-gradient(circle, rgba(56,189,248,0.2) 0%, rgba(240,249,255,0) 60%);
    border-radius: 50%;
    z-index: -1;
    filter: blur(100px);
}

.bg-gradient-3 {
    position: fixed;
    top: 20%;
    right: 15%;
    width: 40vw;
    height: 40vw;
    background: radial-gradient(circle, rgba(3,105,161,0.15) 0%, rgba(240,249,255,0) 60%);
    border-radius: 50%;
    z-index: -1;
    filter: blur(90px);
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    background: rgba(255, 255, 255, 0.8);
    box-shadow: 0 4px 20px rgba(0,0,0,0.03);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-glass);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
}

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

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.nav-links .btn-login {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 0.5rem 1.25rem;
    border-radius: 999px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.nav-links .btn-login:hover {
    background: rgba(79, 70, 229, 0.05);
    transform: translateY(-2px);
}

.nav-links .btn-register {
    background: var(--primary);
    border: 1px solid var(--primary);
    color: white;
    padding: 0.5rem 1.25rem;
    border-radius: 999px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 10px rgba(79, 70, 229, 0.2);
}

.nav-links .btn-register:hover {
    background: var(--primary-hover);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(79, 70, 229, 0.3);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 6rem 1rem 3rem 1rem;
}

.hero h1 {
    font-size: clamp(3rem, 5vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    max-width: 800px;
}

.hero h1 span {
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 600px;
    margin-bottom: 2.5rem;
}

.cta-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: white;
    padding: 1rem 2rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 1.1rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    box-shadow: 0 10px 25px rgba(79, 70, 229, 0.3);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(79, 70, 229, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--text-main);
    padding: 1rem 2rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 1.1rem;
    text-decoration: none;
    border: 1px solid var(--border-glass);
    transition: all 0.3s ease;
}

.btn-outline:hover {
    background: rgba(0, 0, 0, 0.03);
    border-color: var(--primary);
    color: var(--primary);
}

/* Features */
.features {
    padding: 5rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.card-icon {
    width: 50px;
    height: 50px;
    background: rgba(79, 70, 229, 0.1);
    color: var(--primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

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

/* Footer */
footer {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-glass);
    margin-top: 5rem;
}

/* Animations */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-up {
    animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* Floating WhatsApp Button */
.float-wa {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 40px;
    right: 40px;
    background-color: #25d366;
    color: #FFF;
    border-radius: 50px;
    text-align: center;
    box-shadow: 0px 4px 15px rgba(37, 211, 102, 0.4);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
    animation: pulse-wa 2s infinite;
}

.float-wa:hover {
    background-color: #128C7E;
    color: #FFF;
    transform: scale(1.1);
}

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

/* Responsive Mobile Navbar */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        align-items: center;
        padding: 0.85rem 1rem;
        gap: 0.75rem;
    }

    .nav-links {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        align-items: center;
        gap: 0.6rem 1rem;
        width: 100%;
    }

    .nav-links a {
        font-size: 0.88rem;
    }

    .nav-links .btn-login,
    .nav-links .btn-register {
        padding: 0.4rem 0.9rem;
        font-size: 0.85rem;
        border-radius: 6px;
    }

    .hero {
        padding-top: 130px;
    }
}