/* ================================================
   DANCERZ SUMMER CAMP 2 — Feuille de style principale
   ================================================ */

:root {
    --neon-pink:   #FF006E;
    --neon-blue:   #00D9FF;
    --neon-yellow: #FFEA00;
    --neon-purple: #A855F7;
    --dark:        #0A0A0A;
    --darker:      #050505;
    --light:       #FFFFFF;
}

/* ---- Reset & Base ---- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Barlow', sans-serif;
    background: var(--darker);
    color: var(--light);
    overflow-x: hidden;
    line-height: 1.6;
}

/* ---- Fond animé ---- */
.bg-animation {
    position: fixed;
    inset: 0;
    z-index: -1;
    background: linear-gradient(135deg, var(--darker), var(--dark));
    overflow: hidden;
}

.bg-animation::before,
.bg-animation::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
    animation: float 20s infinite ease-in-out;
}

.bg-animation::before {
    width: 600px;
    height: 600px;
    background: var(--neon-pink);
    top: -200px;
    left: -200px;
}

.bg-animation::after {
    width: 500px;
    height: 500px;
    background: var(--neon-blue);
    bottom: -150px;
    right: -150px;
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0)   scale(1);   }
    33%       { transform: translate(100px, -100px) scale(1.1); }
    66%       { transform: translate(-50px,  100px) scale(0.9); }
}

/* ================================================
   HEADER / NAV
   ================================================ */
header {
    padding: 1.5rem 2rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: rgba(10,10,10,.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-family: 'Righteous', cursive;
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

nav a {
    color: var(--light);
    text-decoration: none;
    font-weight: 600;
    text-transform: uppercase;
    font-size: .9rem;
    letter-spacing: 1px;
    transition: all .3s ease;
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--neon-pink);
    transition: width .3s ease;
}

nav a:hover::after { width: 100%; }

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--light);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ================================================
   SECTIONS — Base commune
   ================================================ */
section {
    padding: 6rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    font-family: 'Righteous', cursive;
    font-size: clamp(2.5rem, 6vw, 5rem);
    margin-bottom: 3rem;
    text-transform: uppercase;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60%;
    height: 4px;
    background: linear-gradient(90deg, var(--neon-pink), transparent);
}

/* ================================================
   HERO
   ================================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8rem 2rem 4rem;
    position: relative;
}

.hero-content {
    max-width: 1400px;
    width: 100%;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-family: 'Righteous', cursive;
    font-size: clamp(3rem, 12vw, 9rem);
    line-height: .9;
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.hero h1 .line1 {
    display: block;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: slideUp 1s ease-out .2s backwards;
}

.hero h1 .line2 {
    display: block;
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-yellow));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: slideUp 1s ease-out .4s backwards;
}

.hero h1 .line3 {
    display: block;
    font-size: .4em;
    letter-spacing: .3em;
    color: var(--light);
    margin-top: .5em;
    animation: slideUp 1s ease-out .6s backwards;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(50px); }
    to   { opacity: 1; transform: translateY(0);    }
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 2rem);
    color: rgba(255,255,255,.8);
    margin: 2rem 0 3rem;
    font-weight: 400;
    animation: fadeIn 1s ease-out .8s backwards;
}

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

.hero-date {
    display: inline-block;
    padding: 1rem 2rem;
    background: rgba(255, 0, 110, .1);
    border: 2px solid var(--neon-pink);
    border-radius: 50px;
    font-size: 1.3rem;
    font-weight: 800;
    margin-bottom: 3rem;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1);    box-shadow: 0 0 0  0px rgba(255, 0, 110, .7); }
    50%       { transform: scale(1.05); box-shadow: 0 0 0 20px rgba(255, 0, 110, 0);  }
}

.cta-button {
    display: inline-block;
    padding: 1.5rem 4rem;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    color: var(--light);
    text-decoration: none;
    font-weight: 800;
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    border-radius: 50px;
    transition: all .3s ease;
    box-shadow: 0 10px 40px rgba(255, 0, 110, .4);
    animation: fadeIn 1s ease-out 1s backwards;
}

.cta-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 60px rgba(255, 0, 110, .6);
}

/* ================================================
   PROGRAMME
   ================================================ */
.program-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.program-card {
    background: rgba(255,255,255,.03);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 20px;
    padding: 2.5rem;
    transition: all .3s ease;
    position: relative;
    overflow: hidden;
}

.program-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--neon-pink), var(--neon-blue));
    transform: scaleX(0);
    transition: transform .3s ease;
}

.program-card:hover::before { transform: scaleX(1); }

.program-card:hover {
    transform: translateY(-10px);
    border-color: var(--neon-pink);
    box-shadow: 0 20px 60px rgba(255, 0, 110, .2);
}

.program-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.program-card h3 {
    font-family: 'Righteous', cursive;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--neon-blue);
}

.program-card p {
    color: rgba(255,255,255,.7);
    line-height: 1.8;
}

/* ================================================
   INSTRUCTEURS
   ================================================ */
.instructors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.instructor-card { text-align: center; }

.instructor-image {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    transition: all .3s ease;
    box-shadow: 0 10px 40px rgba(255, 0, 110, .3);
}

.instructor-card:hover .instructor-image {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 20px 60px rgba(255, 0, 110, .5);
}

.instructor-card h3 {
    font-family: 'Righteous', cursive;
    font-size: 1.5rem;
    margin-bottom: .5rem;
}

.instructor-card p {
    color: rgba(255,255,255,.6);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: .9rem;
}

/* ================================================
   INFOS PRATIQUES
   ================================================ */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.info-item {
    background: linear-gradient(135deg,
        rgba(255, 0, 110, .1),
        rgba(0, 217, 255, .1));
    padding: 3rem;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,.1);
}

.info-item h3 {
    font-family: 'Righteous', cursive;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--neon-yellow);
}

.info-item ul { list-style: none; }

.info-item li {
    padding: .8rem 0;
    border-bottom: 1px solid rgba(255,255,255,.1);
    color: rgba(255,255,255,.8);
}

.info-item li:last-child { border-bottom: none; }

.info-item li::before {
    content: '→';
    color: var(--neon-pink);
    margin-right: 1rem;
    font-weight: bold;
}

/* ================================================
   FORMULAIRE CONTACT / INSCRIPTION
   ================================================ */
.contact-form {
    max-width: 600px;
    margin: 3rem auto 0;
}

.form-group { margin-bottom: 2rem; }

.form-group label {
    display: block;
    margin-bottom: .5rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: .9rem;
    color: var(--neon-blue);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem 1.5rem;
    background: rgba(255,255,255,.05);
    border: 2px solid rgba(255,255,255,.1);
    border-radius: 10px;
    color: var(--light);
    font-family: 'Barlow', sans-serif;
    font-size: 1rem;
    transition: all .3s ease;
}

.form-group select option { background: var(--dark); }

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--neon-pink);
    background: rgba(255,255,255,.08);
    box-shadow: 0 0 20px rgba(255, 0, 110, .2);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* Feedback de validation */
.form-group input.valid,
.form-group select.valid,
.form-group textarea.valid {
    border-color: #00FF7F;
}

.form-group input.invalid,
.form-group select.invalid,
.form-group textarea.invalid {
    border-color: var(--neon-pink);
}

.field-error {
    font-size: .8rem;
    color: var(--neon-pink);
    margin-top: .3rem;
    display: none;
}

.field-error.visible { display: block; }

/* Message flash */
.flash-message {
    display: none;
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 2rem;
    font-weight: 600;
    text-align: center;
}

.flash-message.success {
    background: rgba(0, 255, 127, .1);
    border: 2px solid #00FF7F;
    color: #00FF7F;
}

.flash-message.error {
    background: rgba(255, 0, 110, .1);
    border: 2px solid var(--neon-pink);
    color: var(--neon-pink);
}

.flash-message.visible { display: block; }

.submit-button {
    width: 100%;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
    color: var(--light);
    border: none;
    border-radius: 10px;
    font-family: 'Barlow', sans-serif;
    font-size: 1.1rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all .3s ease;
    box-shadow: 0 10px 40px rgba(0, 217, 255, .3);
}

.submit-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 60px rgba(0, 217, 255, .5);
}

.submit-button:disabled {
    opacity: .5;
    cursor: not-allowed;
    transform: none;
}

/* ================================================
   FOOTER
   ================================================ */
footer {
    background: var(--darker);
    padding: 3rem 2rem;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,.1);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.social-links a {
    color: var(--light);
    font-size: 2rem;
    transition: all .3s ease;
    text-decoration: none;
}

.social-links a:hover {
    color: var(--neon-pink);
    transform: translateY(-5px);
}

footer p { color: rgba(255,255,255,.5); font-size: .9rem; }

.footer-tagline {
    margin-top: 1rem;
    font-size: .8rem !important;
}

/* ================================================
   RESPONSIVE
   ================================================ */
@media (max-width: 768px) {
    nav ul {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(10,10,10,.98);
        padding: 2rem;
        gap: 1rem;
    }

    nav ul.active { display: flex; }

    .mobile-menu-btn { display: block; }

    .hero { padding: 6rem 1.5rem 3rem; }

    section { padding: 4rem 1.5rem; }

    .program-grid,
    .instructors-grid,
    .info-grid { grid-template-columns: 1fr; }

    .cta-button { padding: 1.2rem 2.5rem; font-size: 1rem; }
}