/* 
   HEADER SYSTEM
   */

.site-header {
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 1px 0 0 var(--color-border-light), 0 2px 8px 0 var(--color-header-shadow);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 100;
    height: var(--header-height);
}

.header-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-logo a {
    display: flex;
    align-items: center;
    color: var(--color-text-primary);
    text-decoration: none;
    line-height: 0;
}

.header-logo__img {
    display: block;
    height: 48px;
    width: auto;
    max-width: min(280px, 42vw);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-primary);
    transition: var(--transition-base);
}

/* Navigation */
.main-nav {
    height: 100%;
}

.nav-list {
    list-style: none;
    display: flex;
    align-items: center;
    height: 100%;
    gap: 0;
}

.nav-item {
    height: 100%;
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 var(--space-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 16px;
    font-family: var(--font-sans-ui);
    font-weight: 400;
    letter-spacing: 0.005em;
    transition: color var(--transition-base);
    white-space: nowrap;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: var(--space-sm);
    right: var(--space-sm);
    height: 2px;
    background-color: var(--color-text-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.nav-link:hover {
    color: var(--color-text-primary);
}

.nav-link:hover::after {
    transform: scaleX(1);
}

/* Progressive Panel Menu System */
.progressive-menu {
    position: absolute;
    top: 100%;
    left: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
    margin-top: -1px;
}

.nav-item.has-progressive:hover .progressive-menu {
    opacity: 1;
    visibility: visible;
}

.menu-panel {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    box-shadow: 0 1px 0 0 var(--color-border-light), 0 8px 32px rgba(0, 0, 0, 0.06);
}

.primary-panel {
    min-width: 240px;
}

.secondary-panel {
    position: absolute;
    top: 0;
    left: 100%;
    margin-left: -1px;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
    min-width: 220px;
}

.panel-item.has-secondary:hover .secondary-panel {
    opacity: 1;
    visibility: visible;
}

.panel-list {
    list-style: none;
    padding: 0.35rem 0;
}

.panel-item {
    position: relative;
}

.panel-item.has-secondary > .panel-link::after {
    content: '→';
    position: absolute;
    right: var(--space-md);
    color: var(--color-text-tertiary);
    transition: transform var(--transition-base);
}

.panel-item.has-secondary:hover > .panel-link::after {
    transform: translateX(3px);
}

.panel-link {
    display: block;
    padding: 0.4rem var(--space-md);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-family: var(--font-sans-ui);
    transition: background-color var(--transition-base), color var(--transition-base);
    position: relative;
    border-left: 2px solid transparent;
}

.panel-link:hover {
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    border-left-color: var(--color-accent);
}

.secondary-panel .panel-link {
    font-size: 14px;
    padding: 0.35rem var(--space-md);
}


/* 
   RESPONSIVE BEHAVIOR
 */


@media (max-width: 768px) {
    :root {
        --header-height: 70px;
        --space-xl: 3rem;
        --space-2xl: 4rem;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .header-container {
        padding: 0 var(--space-md);
    }

    .header-logo__img {
        height: 36px;
        max-width: min(200px, 58vw);
    }
    
    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background-color: var(--color-surface);
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform var(--transition-slow), opacity var(--transition-slow), visibility var(--transition-slow);
        height: auto;
        max-height: calc(100vh - var(--header-height));
        overflow-y: auto;
    }
    
    .main-nav.is-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-list {
        flex-direction: column;
        align-items: stretch;
        padding: 0;
        height: auto;
    }
    
    .nav-item {
        height: auto;
        border-bottom: 1px solid var(--color-border-light);
    }
    
    .nav-item:last-child {
        border-bottom: none;
    }
    
    .nav-link {
        padding: var(--space-md);
        height: auto;
    }
    
    .nav-link::after {
        display: none;
    }
    
    /* Mobile Progressive Menu Behavior */
    .progressive-menu {
        position: static;
        border: none;
        border-top: 1px solid var(--color-border);
        background-color: var(--color-bg);
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        visibility: hidden;
        transition: max-height var(--transition-slow), opacity var(--transition-slow), visibility var(--transition-slow);
    }
    
    .nav-item.has-progressive.is-open .progressive-menu {
        max-height: 2000px;
        opacity: 1;
        visibility: visible;
    }
    
    .nav-item.has-progressive:hover .progressive-menu {
        opacity: 0;
        visibility: hidden;
    }
    
    .menu-panel {
        border: none;
        box-shadow: none;
    }
    
    .primary-panel {
        min-width: 0;
    }
    
    .secondary-panel {
        position: static;
        margin-left: 0;
        border-top: 1px solid var(--color-border);
        background-color: var(--color-surface);
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        visibility: hidden;
        transition: max-height var(--transition-slow), opacity var(--transition-slow), visibility var(--transition-slow);
    }
    
    .panel-item.has-secondary.is-open .secondary-panel {
        max-height: 1000px;
        opacity: 1;
        visibility: visible;
    }
    
    .panel-item.has-secondary:hover .secondary-panel {
        opacity: 0;
        visibility: hidden;
    }
    
    .panel-link {
        padding: var(--space-md);
    }
    
    .panel-item.has-secondary > .panel-link::after {
        content: '↓';
        transform: none;
    }
    
    .panel-item.has-secondary.is-open > .panel-link::after {
        content: '↑';
    }
    
    
}

@media (max-width: 768px) {

  /* mobile nav MUST be above page */
  .main-nav {
    z-index: 110;
  }

}

/* =========================================
   MOBILE SECOND LEVEL VISIBILITY FIX
   ========================================= */
@media (max-width: 768px) {

  /* primary accordion container must NOT be transparent */
  .progressive-menu {
    background-color: var(--color-surface);
  }

  /* secondary level MUST draw its own surface */
  .secondary-panel {
    background-color: var(--color-surface);
    border-left: 3px solid var(--color-border-light);
  }

  /* restore visual grouping for mobile panels */
  .menu-panel {
    background-color: var(--color-surface);
  }
}

/* FIX: mobile :hover overrides .is-open and hides the panels (touch "sticky hover") */
@media (max-width: 768px) {

  /* keep 1st level open even if :hover triggers */
  .nav-item.has-progressive.is-open:hover .progressive-menu {
    max-height: 2000px;
    opacity: 1;
    visibility: visible;
  }

  /* keep 2nd level open even if :hover triggers */
  .panel-item.has-secondary.is-open:hover .secondary-panel {
    max-height: 1000px;
    opacity: 1;
    visibility: visible;
  }
}

/* CALMER HEADER */
.site-header {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(175, 190, 210, 0.2);
    box-shadow: 0 2px 20px rgba(140, 160, 180, 0.08);
}

.nav-link {
    position: relative;
    color: var(--color-text-secondary);
    transition: all 0.3s ease;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    transition: transform 0.3s ease;
}

.nav-link:hover::after {
    transform: translateX(-50%) scaleX(1);
}

/* Language switcher (EN | FR | …) */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: var(--space-md);
    font-size: 0.9rem;
    font-weight: 500;
}
.lang-switcher-current {
    color: var(--color-text-tertiary);
    pointer-events: none;
}
.lang-switcher-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}
.lang-switcher-link:hover {
    color: var(--color-accent);
}
.lang-switcher span:not(:last-child)::after,
.lang-switcher a:not(:last-child)::after {
    content: '|';
    margin-left: 0.5rem;
    color: var(--color-border);
    font-weight: 400;
}

/* Floating actions: Book session (above) + WhatsApp (same style) */
.floating-actions {
    position: fixed;
    bottom: var(--space-lg, 1.5rem);
    right: var(--space-lg, 1.5rem);
    display: flex;
    flex-direction: column-reverse;
    gap: 10px;
    z-index: 100;
}

.floating-actions .floating-action {
    position: static !important;
    bottom: auto !important;
    right: auto !important;
    width: 58px;
    height: 58px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

/* Book session float: icon + label that pulls left on hover */
.floating-actions .book-session-float {
    flex-direction: row;
    width: auto;
    min-width: 58px;
    height: 58px;
    padding: 0;
    border-radius: 50px;
    justify-content: flex-end;
}

.floating-actions .book-session-float .book-session-float__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 58px;
    height: 58px;
    border-radius: 50%;
}

.floating-actions .book-session-float .book-session-float__label {
    max-width: 0;
    overflow: hidden;
    white-space: nowrap;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0;
    margin: 0;
    opacity: 0;
    transition: max-width 0.25s ease, padding 0.25s ease, opacity 0.2s ease;
}

.floating-actions .book-session-float:hover .book-session-float__label {
    max-width: 120px;
    padding: 0 14px 0 6px;
    opacity: 1;
}

.floating-actions .book-session-float:hover {
    border-radius: 50px;
}

.floating-actions .floating-action svg {
    width: 28px;
    height: 28px;
}

.floating-actions .book-session-float .book-session-float__icon svg {
    width: 28px;
    height: 28px;
}

.floating-actions .floating-action:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.floating-actions .whatsapp-float {
    background: #25D366;
}

.floating-actions .book-session-float {
    background: var(--color-accent, #2563eb);
}