/* ═══════════════════════════════════════════════════════════════════════
   GLOBAL APPLICATION HEADER MODULE
   ═══════════════════════════════════════════════════════════════════════ */

/* ── Shared spacing token ── */
:root {
    --header-gap: 16px;
    --header-pad-x: 40px;
}

.app-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 72px; /* Fixed height to prevent layout shifts */
    z-index: 9999;
    
    /* Variables driven through html[data-theme] or body.light-theme */
    background: var(--header-glass-bg);
    backdrop-filter: var(--header-glass-blur);
    -webkit-backdrop-filter: var(--header-glass-blur);
    border-bottom: 1px solid var(--header-glass-border);
    box-shadow: var(--header-glass-shadow, none);
    
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Hard kill any pseudo-layers to prevent tinting */
.app-header::before,
.app-header::after {
    display: none !important;
    content: none !important;
}

/* Scrolled state (triggered by JS) */
.app-header.is-scrolled {
    background: var(--header-bg-scrolled, var(--header-glass-bg));
    box-shadow: var(--box-shadow);
}

/* Hide header completely when scrolling down fast */
.app-header.is-hidden {
    transform: translateY(-100%);
    box-shadow: none;
}

/* ── Inner Container — CSS Grid 3-column layout ──
   auto  = logo (left-anchored)
   1fr   = nav (truly centered regardless of side widths)
   auto  = actions (right-anchored)
   ─────────────────────────────────────────────── */
.app-header-inner {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: var(--header-gap);
    width: 100%;
    max-width: none;
    margin: 0 auto;
    height: 100%;
    padding: 0 var(--header-pad-x);
}

/* ── CENTER NAVIGATION ── */
.nav-center {
    display: flex;
    align-items: center;
    justify-content: center; /* center within the 1fr column */
}

.nav-center ul {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.25s ease, background 0.25s ease;
    font-size: 14px;
    padding: 8px 20px;
    border-radius: var(--radius-pill);
    white-space: nowrap;
    text-decoration: none;
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.08); /* Universal soft glow */
}

/* Active Nav Link */
.nav-link.is-active {
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.12);
    font-weight: 600;
}

/* ── RIGHT ACTIONS ── */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--header-gap);
    flex-shrink: 0;
    z-index: 2;
}

.header-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 20px;
    border-radius: var(--radius-pill);
    font-size: 13px;
    font-weight: 650;
    letter-spacing: 0.01em;
    color: #ffffff !important;
    background: var(--gradient-primary);
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    white-space: nowrap;
    text-decoration: none;
}

.header-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.45);
}

/* ── OPTIONS BUTTON ── */
.options-wrapper {
    position: relative;
}

.options-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--light-gray);
    color: var(--text-primary);
    cursor: pointer;
    padding: 0;
    transition: transform 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
}

.options-btn span {
    display: block;
    width: 16px;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.options-btn:hover {
    transform: translateY(-2px) scale(1.05);
    background: var(--border-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.options-btn.is-active span:nth-child(1) { transform: translateX(-3px) scaleX(0.6); }
.options-btn.is-active span:nth-child(2) { transform: scaleX(1.2); }
.options-btn.is-active span:nth-child(3) { transform: translateX(3px) scaleX(0.6); }


/* ── OPTIONS DROPDOWN ── */
.header-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 240px;
    padding: 16px;
    border-radius: 16px;
    
    background: var(--dropdown-glass-bg);
    backdrop-filter: var(--dropdown-glass-blur);
    -webkit-backdrop-filter: var(--dropdown-glass-blur);
    border: 1px solid var(--glass-border);
    box-shadow: var(--box-shadow-lg);
    
    /* Hidden state */
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.96);
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), visibility 0.25s ease;
    z-index: 9999;
}

/* Invisible bridge for hover */
.header-dropdown::before {
    content: "";
    position: absolute;
    top: -12px;
    left: 0;
    right: 0;
    height: 12px;
}

.header-dropdown.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.dropdown-section-label {
    display: block;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    padding: 0 8px 8px;
    opacity: 0.7;
}

.dropdown-section-items {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: 10px 0;
    opacity: 0.5;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    background: transparent;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s ease;
    width: 100%;
}

.dropdown-item:hover {
    background: var(--light-gray);
}

.dropdown-item i {
    font-size: 16px;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

/* Toggle specific items */
html[data-theme="dark"] .light-icon,
body.dark-mode .light-icon { display: none; }

html[data-theme="light"] .dark-icon,
body.light-theme .dark-icon,
body.light-mode .dark-icon { display: none; }

#headerWhatsappBtn:hover { color: #25D366; }
#headerTelegramBtn:hover { color: #0088cc; }


/* ═══════════════════════════════════════════════════════════════════════
   MOBILE DRAWER SIDEBAR
   ═══════════════════════════════════════════════════════════════════════ */
body.sidebar-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
    height: 100%;
}

.sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0.35s ease;
    -webkit-tap-highlight-color: transparent;
}

.sidebar-backdrop.is-open {
    opacity: 1;
    visibility: visible;
}

.app-sidebar {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 88vw;
    max-width: 420px;
    z-index: 10001;
    
    background: var(--sidebar-glass-bg);
    backdrop-filter: var(--sidebar-glass-blur);
    -webkit-backdrop-filter: var(--sidebar-glass-blur);
    border-left: 1px solid var(--border-color);
    
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.32, 0.72, 0, 1);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
}

.app-sidebar.is-open {
    transform: translateX(0);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px 16px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

/* Repurpose options-btn styles for close btn */
.sidebar-close-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--light-gray);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 16px;
    transition: background 0.2s ease, transform 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

.sidebar-close-btn:active {
    transform: scale(0.92);
}

.sidebar-section {
    padding: 20px 24px 8px;
}

.sidebar-section-label {
    display: block;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    padding-bottom: 12px;
    opacity: 0.7;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    transition: background 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

.sidebar-nav-item:active {
    background: var(--light-gray);
}

.sidebar-nav-item.is-active {
    color: var(--primary-color) !important;
    background: rgba(99, 102, 241, 0.1);
    font-weight: 700;
}

.sidebar-nav-item i {
    font-size: 18px;
    width: 24px;
    text-align: center;
    color: var(--primary-color);
    flex-shrink: 0;
}

.sidebar-divider {
    height: 1px;
    background: var(--border-color);
    margin: 4px 24px;
    opacity: 0.5;
}


/* ═══════════════════════════════════════════════════════════════════════
   RESPONSIVE RULES
   Shared breakpoints: 768 / 1199 / 1200+
   Spacing scales proportionally via --header-gap & --header-pad-x
   ═══════════════════════════════════════════════════════════════════════ */

/* ── Small screens (≤768px): hide nav & CTA, compact padding ── */
@media (max-width: 768px) {
    :root {
        --header-gap: 12px;
        --header-pad-x: 16px;
    }
    .nav-center { display: none; }
    .header-cta-btn { display: none; }
    /* Collapse to 2 columns when center nav is hidden */
    .app-header-inner {
        grid-template-columns: auto 1fr;
    }
    /* Anchor actions to the right of the remaining 1fr column */
    .header-actions {
        justify-content: flex-end;
    }
}

/* ── Medium screens (769–1199px): hide nav, balanced tablet spacing ── */
@media (min-width: 769px) and (max-width: 1199px) {
    :root {
        --header-gap: 14px;
        --header-pad-x: 28px;
    }
    .nav-center { display: none; }
    /* Collapse to 2 columns when center nav is hidden */
    .app-header-inner {
        grid-template-columns: auto 1fr;
    }
    .header-actions {
        justify-content: flex-end;
    }
    .app-sidebar { width: 72vw; max-width: 380px; }
}

/* ── Large screens (≥1200px): full 3-column layout, hide sidebar ── */
@media (min-width: 1200px) {
    :root {
        --header-gap: 20px;
        --header-pad-x: 40px;
    }
    .sidebar-backdrop,
    .app-sidebar {
        display: none !important;
    }
}

/* ── Extra-large (≥1600px): generous breathing room ── */
@media (min-width: 1600px) {
    :root {
        --header-pad-x: 56px;
    }
}