/* ==========================================================================
   OPERA BASTIDE LANDING PAGE - CSS
   Design épuré inspiré du Festival d'Aix
   Fond blanc, texte noir, typographie grasse, touches orange
   ========================================================================== */

:root {
    --ob-orange: #E85D04;
    --ob-orange-light: #F48C06;
    --ob-black: #0A0A0A;
    --ob-dark: #1A1A1A;
    --ob-gray: #6B6B6B;
    --ob-gray-light: #F5F5F5;
    --ob-white: #FFFFFF;
    --ob-font-display: 'Bebas Neue', sans-serif;
    --ob-font-body: 'DM Sans', sans-serif;
    --ob-transition: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
.ob-landing * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.ob-landing {
    font-family: var(--ob-font-body);
    background: var(--ob-white);
    color: var(--ob-black);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.ob-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: var(--ob-black);
    overflow: hidden;
}

.ob-hero__video-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.ob-hero__video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.5;
}

.ob-hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        180deg,
        rgba(0, 0, 0, 0.3) 0%,
        rgba(0, 0, 0, 0.6) 100%
    );
    z-index: 2;
}

.ob-hero__content {
    position: relative;
    z-index: 3;
    text-align: center;
    padding: 2rem;
    animation: fadeInUp 1.2s var(--ob-transition) forwards;
}

.ob-hero__logo {
    width: 180px;
    height: auto;
    margin-bottom: 2rem;
    filter: brightness(0) invert(1);
}

.ob-hero__title {
    font-family: var(--ob-font-display);
    font-size: clamp(3rem, 10vw, 8rem);
    color: var(--ob-white);
    letter-spacing: 0.1em;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.ob-hero__subtitle {
    font-family: var(--ob-font-display);
    font-size: clamp(1.5rem, 4vw, 3rem);
    color: var(--ob-orange);
    letter-spacing: 0.2em;
    margin-bottom: 1rem;
}

.ob-hero__dates {
    font-family: var(--ob-font-body);
    font-size: 1.25rem;
    color: var(--ob-white);
    letter-spacing: 0.15em;
    font-weight: 500;
    opacity: 0.9;
}

.ob-hero__scroll {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--ob-white);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    opacity: 0.7;
    animation: bounce 2s infinite;
}

.ob-hero__scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--ob-orange), transparent);
}

/* ==========================================================================
   NAVIGATION STICKY
   ========================================================================== */
.ob-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--ob-white);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s var(--ob-transition);
}

.ob-nav.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.ob-nav__container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ob-nav__logo {
    height: 50px;
    width: auto;
}

.ob-nav__links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.ob-nav__link {
    font-family: var(--ob-font-display);
    font-size: 1.1rem;
    color: var(--ob-black);
    text-decoration: none;
    letter-spacing: 0.1em;
    position: relative;
    transition: color 0.3s var(--ob-transition);
}

.ob-nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--ob-orange);
    transition: width 0.3s var(--ob-transition);
}

.ob-nav__link:hover {
    color: var(--ob-orange);
}

.ob-nav__link:hover::after {
    width: 100%;
}

.ob-nav__cta {
    font-family: var(--ob-font-display);
    font-size: 1rem;
    padding: 0.75rem 1.5rem;
    background: var(--ob-orange);
    color: var(--ob-white);
    text-decoration: none;
    letter-spacing: 0.1em;
    transition: all 0.3s var(--ob-transition);
}

.ob-nav__cta:hover {
    background: var(--ob-black);
    transform: translateY(-2px);
}

/* ==========================================================================
   SECTIONS COMMUNES
   ========================================================================== */
.ob-section {
    padding: 6rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.ob-section--full {
    max-width: 100%;
    padding: 6rem 0;
}

.ob-section__header {
    margin-bottom: 4rem;
    text-align: center;
}

.ob-section__label {
    font-family: var(--ob-font-body);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--ob-orange);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 1rem;
    display: block;
}

.ob-section__title {
    font-family: var(--ob-font-display);
    font-size: clamp(2.5rem, 6vw, 5rem);
    color: var(--ob-black);
    letter-spacing: 0.05em;
    line-height: 1.1;
}

/* ==========================================================================
   OPERA CARDS
   ========================================================================== */
.ob-operas {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.ob-opera-card {
    position: relative;
    background: var(--ob-gray-light);
    overflow: hidden;
    aspect-ratio: 16/10;
    cursor: pointer;
    transition: transform 0.5s var(--ob-transition);
}

.ob-opera-card:hover {
    transform: scale(1.02);
}

.ob-opera-card__content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2.5rem;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, transparent 100%);
    color: var(--ob-white);
}

.ob-opera-card__category {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--ob-orange);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.ob-opera-card__title {
    font-family: var(--ob-font-display);
    font-size: 2.5rem;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.ob-opera-card__info {
    font-size: 0.875rem;
    opacity: 0.8;
    display: flex;
    gap: 1.5rem;
}

.ob-opera-card__dates {
    color: var(--ob-orange-light);
    font-weight: 500;
}

/* ==========================================================================
   EVENTS GRID (Concerts & Actions)
   ========================================================================== */
.ob-events-section {
    background: var(--ob-gray-light);
}

.ob-events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.ob-event-card {
    background: var(--ob-white);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    border-left: 3px solid var(--ob-orange);
    transition: all 0.3s var(--ob-transition);
}

.ob-event-card:hover {
    transform: translateX(8px);
    box-shadow: -8px 8px 0 var(--ob-orange);
}

.ob-event-card__date {
    font-family: var(--ob-font-display);
    font-size: 1.25rem;
    color: var(--ob-orange);
    letter-spacing: 0.05em;
}

.ob-event-card__title {
    font-family: var(--ob-font-display);
    font-size: 1.75rem;
    color: var(--ob-black);
    letter-spacing: 0.02em;
    line-height: 1.2;
}

.ob-event-card__meta {
    font-size: 0.875rem;
    color: var(--ob-gray);
}

.ob-event-card__venue {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ob-event-card__venue::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--ob-orange);
    border-radius: 50%;
}

/* ==========================================================================
   ACTIONS PÉRIPHÉRIQUES
   ========================================================================== */
.ob-actions {
    background: var(--ob-black);
    color: var(--ob-white);
}

.ob-actions .ob-section__title {
    color: var(--ob-white);
}

.ob-actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1px;
    background: rgba(255, 255, 255, 0.1);
    max-width: 1400px;
    margin: 0 auto;
}

.ob-action-item {
    background: var(--ob-black);
    padding: 2.5rem;
    transition: background 0.3s var(--ob-transition);
}

.ob-action-item:hover {
    background: var(--ob-dark);
}

.ob-action-item__icon {
    width: 40px;
    height: 40px;
    margin-bottom: 1.5rem;
    color: var(--ob-orange);
}

.ob-action-item__title {
    font-family: var(--ob-font-display);
    font-size: 1.5rem;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

.ob-action-item__dates {
    font-size: 0.875rem;
    color: var(--ob-orange);
    margin-bottom: 0.5rem;
}

.ob-action-item__desc {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.5;
}

.ob-action-item__link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    color: var(--ob-orange);
    font-weight: 500;
    font-size: 0.875rem;
    text-decoration: none;
    transition: gap 0.3s var(--ob-transition);
}

.ob-action-item__link:hover {
    gap: 1rem;
}

/* ==========================================================================
   PARTNERS SECTION
   ========================================================================== */
.ob-partners {
    padding: 5rem 2rem;
    background: var(--ob-gray-light);
}

.ob-partners__container {
    max-width: 1200px;
    margin: 0 auto;
}

.ob-partners__group {
    margin-bottom: 4rem;
}

.ob-partners__group:last-child {
    margin-bottom: 0;
}

.ob-partners__label {
    font-family: var(--ob-font-display);
    font-size: 1rem;
    letter-spacing: 0.2em;
    color: var(--ob-gray);
    text-align: center;
    margin-bottom: 2rem;
    text-transform: uppercase;
}

.ob-partners__logos {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 3rem;
}

.ob-partners__logo {
    height: 60px;
    width: auto;
    max-width: 150px;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: all 0.3s var(--ob-transition);
}

.ob-partners__logo:hover {
    filter: grayscale(0%);
    opacity: 1;
}

.ob-partners__logos--institutional .ob-partners__logo {
    height: 70px;
    max-width: 180px;
}

.ob-partners__logos--grand .ob-partners__logo {
    height: 50px;
}

.ob-partners__logo--featured {
    height: 80px !important;
    max-width: 200px !important;
}

.ob-partners__logos--private .ob-partners__logo {
    height: 55px;
    max-width: 140px;
}

.ob-partners__logos--associatifs .ob-partners__logo {
    height: 60px;
    max-width: 120px;
}

.ob-partners__text-list {
    max-width: 900px;
    margin: 2rem auto 0;
    text-align: center;
    font-size: 0.875rem;
    color: var(--ob-gray);
    line-height: 1.8;
}

.ob-partners__cta {
    text-align: center;
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.ob-partners__cta-text {
    font-size: 1rem;
    color: var(--ob-dark);
    max-width: 600px;
    margin: 0 auto 1.5rem;
    line-height: 1.6;
}

.ob-cta-button--outline {
    background: transparent;
    border: 2px solid var(--ob-orange);
    color: var(--ob-orange);
}

.ob-cta-button--outline:hover {
    background: var(--ob-orange);
    color: var(--ob-white);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.ob-footer {
    background: var(--ob-black);
    color: var(--ob-white);
    padding: 5rem 2rem 2rem;
}

.ob-footer__container {
    max-width: 1200px;
    margin: 0 auto;
}

.ob-footer__main {
    display: grid;
    grid-template-columns: 200px repeat(3, 1fr);
    gap: 4rem;
    padding-bottom: 4rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.ob-footer__logo {
    width: 150px;
    height: auto;
    filter: brightness(0) invert(1);
}

.ob-footer__column h4 {
    font-family: var(--ob-font-display);
    font-size: 0.875rem;
    letter-spacing: 0.15em;
    color: var(--ob-orange);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
}

.ob-footer__column p,
.ob-footer__column a {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    text-decoration: none;
    display: block;
}

.ob-footer__column a:hover {
    color: var(--ob-orange);
}

.ob-footer__bottom {
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.ob-footer__copy {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
}

.ob-footer__legal {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* Scroll animations */
.ob-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ob-transition), transform 0.8s var(--ob-transition);
}

.ob-animate.visible {
    opacity: 1;
    transform: translateY(0);
}

.ob-animate-delay-1 { transition-delay: 0.1s; }
.ob-animate-delay-2 { transition-delay: 0.2s; }
.ob-animate-delay-3 { transition-delay: 0.3s; }
.ob-animate-delay-4 { transition-delay: 0.4s; }
.ob-animate-delay-5 { transition-delay: 0.5s; }
.ob-animate-delay-6 { transition-delay: 0.6s; }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
    .ob-operas {
        grid-template-columns: 1fr;
    }
    
    .ob-footer__main {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .ob-nav__links {
        display: none;
    }
}

@media (max-width: 768px) {
    .ob-section {
        padding: 4rem 1.5rem;
    }
    
    .ob-events-grid {
        grid-template-columns: 1fr;
        padding: 0 1.5rem;
    }
    
    .ob-actions-grid {
        grid-template-columns: 1fr;
    }
    
    .ob-footer__main {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .ob-footer__logo {
        margin: 0 auto;
    }
    
    .ob-footer__bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .ob-partners__logos {
        gap: 2rem;
    }
    
    .ob-partners__logo {
        height: 40px;
    }
}

/* ==========================================================================
   HAMBURGER MENU (Mobile)
   ========================================================================== */
.ob-nav__hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.ob-nav__hamburger span {
    width: 25px;
    height: 2px;
    background: var(--ob-black);
    transition: all 0.3s var(--ob-transition);
}

@media (max-width: 1024px) {
    .ob-nav__hamburger {
        display: flex;
    }
}

/* ==========================================================================
   CTA BUTTON
   ========================================================================== */
.ob-cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--ob-font-display);
    font-size: 1.1rem;
    padding: 1rem 2rem;
    background: var(--ob-orange);
    color: var(--ob-white);
    text-decoration: none;
    letter-spacing: 0.1em;
    transition: all 0.3s var(--ob-transition);
    margin-top: 2rem;
}

.ob-cta-button:hover {
    background: var(--ob-black);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(232, 93, 4, 0.3);
}

.ob-cta-button svg {
    width: 20px;
    height: 20px;
    transition: transform 0.3s var(--ob-transition);
}

.ob-cta-button:hover svg {
    transform: translateX(5px);
}