/* --- CHARTE GRAPHIQUE --- */
:root {
    --dark-blue: #0a192f;
    --light-dark-blue: #112240;
    --light-text: #ccd6f6;
    --white-text: #ffffff;
    --accent-color: #64ffda;
    --font-title: 'Poppins', sans-serif;
    --font-body: 'Lato', sans-serif;
}

/* --- RESET & GLOBAL --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--dark-blue);
    color: var(--light-text);
    font-family: var(--font-body);
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3 {
    font-family: var(--font-title);
    color: var(--white-text);
    line-height: 1.2;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; margin-bottom: 2rem; text-align: center; }
h3 { font-size: 1.5rem; }

section {
    padding: 6rem 0;
}

/* --- NAVBAR --- */
.navbar {
    background-color: rgba(10, 25, 47, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--light-dark-blue);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--white-text);
    font-family: var(--font-title);
    font-weight: 600;
}

.logo-img {
    height: 40px;
    margin-right: 10px;
}

.nav-menu {
    list-style: none;
    display: flex;
}

.nav-menu li {
    margin-left: 25px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--light-text);
    transition: color 0.3s ease;
}

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

/* --- HERO SECTION --- */
.hero {
    padding-top: 10rem;
    text-align: center;
}

.hero .subtitle {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 1.5rem auto 2.5rem;
}

.cta-button {
    background-color: transparent;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    padding: 1rem 2.5rem;
    border-radius: 4px;
    text-decoration: none;
    font-family: var(--font-title);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.cta-button:hover {
    background-color: rgba(100, 255, 218, 0.1);
}

.screenshot-container {
    margin-top: 4rem;
    padding: 1rem;
    background: linear-gradient(145deg, var(--light-dark-blue), #0d284d);
    border-radius: 8px;
    box-shadow: 0 10px 30px -15px rgba(2, 12, 27, 0.7);
}
.screenshot-img {
    max-width: 100%;
    border-radius: 4px;
}

/* --- FEATURES SECTION --- */
.features-section {
    background-color: var(--light-dark-blue);
}

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

.feature-card {
    background-color: var(--dark-blue);
    padding: 2rem;
    border-radius: 4px;
    border-left: 3px solid var(--accent-color);
}

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

/* --- HOW IT WORKS SECTION --- */
.steps-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

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

.step-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-color);
    font-family: var(--font-title);
}

/* --- DOWNLOAD SECTION --- */
.download-section {
    text-align: center;
}

.large-button {
    font-size: 1.2rem;
    padding: 1.2rem 3rem;
}

.small-text {
    margin-top: 1rem;
    font-size: 0.9rem;
    opacity: 0.7;
}

/* --- FOOTER --- */
.footer {
    text-align: center;
    padding: 2rem 0;
    font-size: 0.9rem;
    background-color: var(--light-dark-blue);
}

.footer a {
    color: var(--accent-color);
    text-decoration: none;
}

/* --- RESPONSIVE --- */
@media(max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }
}