/* Variables CSS */
:root {
    --primary-color: #000000;
    --secondary-color: #555555;
    --accent-color: #DDDDDD;
    --background-color: #FFFFFF;
    --text-color: #333333;
    --light-gray: #F9F9F9;
    --medium-gray: #EEEEEE;
    --dark-gray: #999999;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    --font-primary: 'Poppins', sans-serif;
    --font-heading: 'Montserrat', sans-serif;
}

/* Reset et styles de base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    width: 100%;
    overflow-x: hidden;
}

body {
    font-family: var(--font-primary);
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    position: relative;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    position: relative;
    z-index: 100;
    background-color: var(--background-color);
    border-bottom: 1px solid var(--medium-gray);
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 400;
    transition: all 0.2s ease;
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--primary-color);
    transition: width 0.2s ease;
}

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

.nav-links a:hover::after, .nav-links a.active::after {
    width: 100%;
}

/* Sections principales */
main {
    min-height: calc(100vh - 180px);
    padding: 2rem 0;
}

.container {
    width: 90%;
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

.hero {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 4rem 1rem;
    position: relative;
    background-color: var(--background-color);
    margin: 0 auto;
    width: 90%;
    max-width: 1000px;
    border-bottom: 1px solid var(--medium-gray);
}

.interactive-text {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: 2px;
    position: relative;
    display: inline-block;
    color: var(--primary-color);
}

.subtitle {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
    font-weight: 300;
}

.reset-button {
    background-color: var(--background-color);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 0.6rem 1.2rem;
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 0.5rem;
    letter-spacing: 0.5px;
    outline: none;
}

.reset-button:hover {
    background-color: var(--primary-color);
    color: var(--background-color);
}

.reset-button:active {
    transform: translateY(1px);
}

.content {
    background-color: var(--background-color);
    margin: 2rem auto;
    width: 90%;
    max-width: 1000px;
    border-top: 1px solid var(--medium-gray);
    padding-top: 2rem;
}

.content p {
    margin-bottom: 1.5rem;
    color: var(--text-color);
    font-size: 1rem;
    line-height: 1.8;
    font-weight: 300;
}

.content ul {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
    color: var(--text-color);
    font-size: 1rem;
    line-height: 1.8;
    font-weight: 300;
}

.content li {
    margin-bottom: 0.5rem;
}

.content strong {
    font-weight: 500;
    color: var(--primary-color);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--medium-gray);
}

footer p {
    color: var(--dark-gray);
    font-size: 0.9rem;
}

/* Styles pour les lettres interactives */
.letter {
    display: inline-block;
    position: relative;
    cursor: pointer;
    transition: transform 0.2s, color 0.2s;
    padding: 0 2px;
}

.letter:hover {
    transform: scale(1.1);
    color: var(--secondary-color);
}

.letter.falling {
    position: absolute;
    z-index: 10;
    cursor: default;
    color: var(--primary-color);
    font-weight: 600;
}

/* Styles pour les lettres en mouvement */
.letter.falling:nth-child(3n) {
    color: var(--primary-color);
}

.letter.falling:nth-child(3n+1) {
    color: var(--secondary-color);
}

.letter.falling:nth-child(3n+2) {
    color: var(--dark-gray);
}

/* Espace d'interaction */
.interaction-space {
    background-color: var(--background-color);
    width: 90%;
    max-width: 1000px;
    margin: 0 auto;
}

/* Responsive design */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        padding: 1rem;
    }
    
    .logo {
        margin-bottom: 1rem;
    }
    
    .nav-links {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .interactive-text {
        font-size: 2rem;
    }
    
    .content {
        width: 95%;
    }

    .nav-logo {
        height: 30px;
    }
}

/* Overlay d'entrée */
.entry-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--background-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 1;
    transition: opacity 1.5s ease;
}

.entry-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.entry-content {
    text-align: center;
    max-width: 600px;
    padding: 2rem;
}

.entry-content h2 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
}

.entry-content p {
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    color: var(--text-color);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease 0.3s forwards;
}

.entry-button {
    background-color: var(--background-color);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 0.8rem 1.5rem;
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 1rem;
    letter-spacing: 0.5px;
    outline: none;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease 0.6s forwards;
}

.entry-button:hover {
    background-color: var(--primary-color);
    color: var(--background-color);
}

.entry-button:active {
    transform: translateY(2px);
}

/* Animations d'entrée */
@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Animation du contenu principal */
body.content-visible header,
body.content-visible main,
body.content-visible footer {
    animation: fadeIn 1.5s ease;
}

/* Masquer initialement le contenu */
body:not(.content-visible) header,
body:not(.content-visible) main,
body:not(.content-visible) footer {
    opacity: 0;
}

/* Score container */
.score-container {
    position: fixed;
    top: 120px;
    right: 20px;
    background-color: var(--background-color);
    padding: 10px 15px;
    border-radius: 4px;
    font-family: var(--font-primary);
    font-size: 0.9rem;
    color: var(--text-color);
    text-align: right;
    z-index: 1000;
    border: 1px solid var(--medium-gray);
    box-shadow: var(--shadow);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.score-container.hidden {
    opacity: 0;
    transform: translateY(-20px);
    pointer-events: none;
}

.close-score {
    position: absolute;
    top: 5px;
    left: 5px;
    width: 20px;
    height: 20px;
    border: none;
    background: none;
    font-size: 1.2rem;
    line-height: 1;
    cursor: pointer;
    color: var(--text-color);
    opacity: 0.5;
    transition: opacity 0.2s ease;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-score:hover {
    opacity: 1;
}

.show-score {
    position: fixed;
    top: 120px;
    right: 20px;
    width: 30px;
    height: 30px;
    border: 1px solid var(--medium-gray);
    background-color: var(--background-color);
    border-radius: 4px;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.show-score:hover {
    background-color: var(--primary-color);
    color: var(--background-color);
    border-color: var(--primary-color);
}

.show-score.hidden {
    opacity: 0;
    transform: translateY(-20px);
    pointer-events: none;
}

.score-container p {
    margin: 4px 0;
    font-weight: 300;
    padding-left: 15px;
}

.score-container span {
    font-weight: 500;
    color: var(--primary-color);
    margin-left: 4px;
}

/* Responsive design pour le score */
@media (max-width: 768px) {
    .score-container {
        top: 80px;
        right: 10px;
        font-size: 0.8rem;
        padding: 8px 12px;
    }

    .show-score {
        top: 80px;
        right: 10px;
    }
}