:root {
    --primary: #00d2ff;
    --dark: #1a1a2e;
    --white: #ffffff;
    --light-bg: #f4f7f6;
}

body, html {
    margin: 0;
    padding: 0;
    font-family: 'Poppins', sans-serif;
    background-color: var(--light-bg);
    color: #333;
    height: 100%;
    width: 100%;
    overflow: auto;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ===== STYLES MODE JOUR/NUIT ===== */
.theme-toggle {
    background: #3b82f6;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 18px;
    transition: all 0.3s ease;
    margin-left: 20px;
}

.theme-toggle:hover {
    background: #2563eb;
    transform: scale(1.05);
}

/* Mode sombre */
body.dark-mode {
    background-color: #0f172a;
    color: #e2e8f0;
}

body.dark-mode #portfolio-section {
    background: #0f172a;
}

body.dark-mode .top-nav {
    background-color: #1e293b;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

body.dark-mode .nav-links a {
    color: #e2e8f0;
}

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

body.dark-mode .card,
body.dark-mode .carde,
body.dark-mode .cardf,
body.dark-mode .cardg,
body.dark-mode .cardh {
    background-color: #1e293b;
    color: #e2e8f0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

body.dark-mode .card h2,
body.dark-mode .carde h2,
body.dark-mode .cardf h2,
body.dark-mode .cardg h2,
body.dark-mode .cardh h2 {
    color: #60a5fa;
}

body.dark-mode .card p,
body.dark-mode .carde p,
body.dark-mode .cardf p,
body.dark-mode .cardg p,
body.dark-mode .cardh p {
    color: #cbd5e1;
}

body.dark-mode .contact-link {
    background-color: #1e293b;
    color: var(--primary);
    border-color: var(--primary);
}

body.dark-mode .contact-link:hover {
    background-color: var(--primary);
    color: #1e293b;
}

body.dark-mode footer {
    background-color: #1e293b;
    color: #94a3b8;
}

body.dark-mode #page-select {
    background-color: #1e293b;
    border-color: var(--primary);
    color: #e2e8f0;
}

/* ===== FIN STYLES MODE JOUR/NUIT ===== */

#hero-section {
    position: relative;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at center, #16213e 0%, #1a1a2e 100%);
    transition: transform 0.8s cubic-bezier(0.85, 0, 0.15, 1);
    z-index: 10;
}

.intro-text { text-align: center; margin-bottom: 10vh; color: white; }
.intro-text h1 { font-size: 3.5rem; margin: 0; }
.hint { color: var(--primary); animation: blink 1.5s infinite; }

/* LE CONTENEUR DU TERRAIN */
.court-container {
    position: relative;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* LE FILET */
.net {
    width: 70%;
    height: 15vh;
    border-top: 5px solid rgba(255,255,255,0.3);
    background-image: linear-gradient(45deg, rgba(255,255,255,0.05) 25%, transparent 25%), 
                      linear-gradient(-45deg, rgba(255,255,255,0.05) 25%, transparent 25%);
    background-size: 15px 15px;
    position: absolute;
    top: -5vh; 
    z-index: 1;
}

/* LE BALLON */
.volleyball {
    width: 10vh;
    height: 10vh;
    max-width: 12vh;
    min-width: 7vh;
    background: radial-gradient(circle at 30% 30%, #fff, #bbb);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 15px 35px rgba(0,0,0,0.6);
    border: 2px solid #333;
    z-index: 5;
    transition: transform 0.2s;
}

.volleyball:hover { transform: scale(1.1); }

/* ANIMATION */
.is-served { animation: servePath 1s forwards ease-in; }

@keyframes servePath {
    0% { transform: scale(1) translateY(0); }
    20% { transform: scale(1.1) translateY(4vh); } 
    100% { transform: scale(0.1) translateY(-120vh); opacity: 0; }
}

/* NAVIGATION PORTFOLIO */
#portfolio-section {
    position: absolute;
    top: 0;
    width: 100%;
    min-height: 100vh;
    background: #f4f7f6;
    z-index: 5;
    display: flex;
    flex-direction: column; 
    overflow: hidden;
    transition: background-color 0.3s ease;
}

.top-nav {
    display: flex; 
    justify-content: space-between;
    align-items: center;
    padding: 0 5vw; 
    background: var(--dark); 
    height: 10vh;
    box-sizing: border-box;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: background-color 0.3s ease;
}

/* Conteneur des liens */
.nav-links {
    display: flex;
    gap: 20px;
    align-items: center;
}

/* Style des liens */
.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

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

#page-select {
    padding: 1vh 1vw;
    border-radius: 8px;
    border: 2px solid var(--primary);
    background-color: #252545;
    color: white;
    font-weight: bold;
    cursor: pointer;
    outline: none;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.profile-pic {
    width: 100px; 
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 15px auto;
    display: block;
}

.content {
    flex: 1; 
    display: flex;
    flex-wrap: wrap;
    justify-content: center; 
    align-items: center; 
    gap: 2vw;
    padding: 2vh 5vw; 
    overflow: hidden;
}

.card, .carde, .cardf, .cardg, .cardh {
    background: white;
    padding: 2vh;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    border-top: 5px solid var(--primary);
    flex: 0 0 28%;         
    min-height: 30vh;
    height: auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 25px;
    box-sizing: border-box;
    text-align: center;
    transition: transform 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
}

.card h2, .carde h2, .cardf h2, .cardg h2, .cardh h2 {
    font-size: 1.2rem;
    margin: 5px 0;
    transition: color 0.3s ease;
}

.card p, .carde p, .cardf p, .cardg p, .cardh p {
    line-height: 1.4;
    color: #666;
    font-size: 1rem;
    margin: 0;
    transition: color 0.3s ease;
}

.card:hover, .carde:hover, .cardf:hover, .cardg:hover, .cardh:hover {
    transform: translateY(-10px);
}

.icon {
    height: 7vh;
    width: auto;
    display: block;
}

footer {
    background: var(--dark);
    color: white;
    text-align: center;
    height: 5vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    width: 100%;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.contact-link {
    margin-top: 2vh;
    padding: 1vh 1.5vw;
    background: var(--dark);
    color: var(--primary);
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    font-size: 0.8rem;
    border: 1px solid var(--primary);
    transition: 0.3s;
}

.contact-link:hover {
    background: var(--primary);
    color: var(--dark);
}

.hidden { display: none; }
.slide-up { transform: translateY(-100%); }
.fade-in { animation: fadeIn 1s forwards; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }