/* ============================================================
   HEADER – Liquid Glass UI
   Accent: #36dbe7 (dark) / #403688 (light)
   ============================================================ */

/* ── Base shell ──────────────────────────────────────────── */
.header-section {
    position: fixed;
    width: 100%;
    z-index: 1000;
    top: 0;
    left: 0;
    color: white;
}

.header-panel {
    display: flex;
    padding: 0 1.5rem;
    align-items: center;
    background: var(--navbar-bg-color);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    height: 68px;
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--shadow-glass);
    position: relative;
    /* inner shine stripe */
}

.header-panel::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--glass-shine);
    pointer-events: none;
    border-radius: inherit;
}

/* ── Logo ────────────────────────────────────────────────── */
.header-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    margin-right: 2rem;
    text-decoration: none;
}

.header-logo img,
.header-logo-image {
    height: 54px;
    transition: filter 0.3s ease, transform 0.3s ease;
    filter: drop-shadow(0 0 8px rgba(54, 219, 231, 0.25));
}

.header-logo:hover img,
.header-logo:hover .header-logo-image {
    filter: drop-shadow(0 0 14px rgba(54, 219, 231, 0.55));
    transform: scale(1.04);
}

/* ── Right section (nav + user) ──────────────────────────── */
.header-right {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-grow: 1;
    height: 100%;
    gap: 0.5rem;
}

/* ── Nav bar ─────────────────────────────────────────────── */
.header-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--navbar-text);
}

.header-nav > a,
.nav-service-dropdown-button.service-button {
    display: inline-flex;
    align-items: center;
    padding: 0.4rem 0.85rem;
    border-radius: 999px;            /* pill */
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    color: var(--navbar-text);
    text-decoration: none;
    transition: background 0.25s ease, box-shadow 0.25s ease, color 0.25s ease;
    position: relative;
    cursor: pointer;
}

.header-nav > a:hover,
.nav-service-dropdown-group:hover .nav-service-dropdown-button {
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.12), 0 0 12px rgba(54, 219, 231, 0.12);
    color: var(--link-hover-color);
    text-decoration: none;
}

.header-panel a {
    text-decoration: none;
}

/* ── Services mega-dropdown ──────────────────────────────── */
.nav-service-dropdown-group {
    position: relative;
    border-radius: 999px;
    transition: all 0.3s ease;
}

/* Invisible hover-bridge: fills the gap between the nav button and the
   fixed popup positioned at top:68px, so the mouse never "escapes" the
   parent element on the way down to the menu. */
.nav-service-dropdown-group::after {
    content: '';
    position: absolute;
    top: 100%;
    left: -24px;
    right: -24px;
    height: 28px;   /* comfortably spans the header-panel bottom → popup top gap */
    background: transparent;
}

.nav-service-dropdown-group .popup {
    display: none;
    padding: 2rem 2.5rem;
    position: fixed;
    top: 68px;
    left: 0;
    z-index: 999;
    width: 100vw;
    background: var(--popup-bg-color);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.45), 0 1px 0 rgba(255, 255, 255, 0.06) inset;
    animation: popupFadeIn 0.2s ease;
}

@keyframes popupFadeIn {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.nav-service-dropdown-group:hover .popup,
.nav-service-dropdown-group:hover .popup:hover,
.nav-service-dropdown-group:focus .popup {
    display: block;
}

/* Keep the popup open when mouse is over it (re-trigger parent hover chain) */
.nav-service-dropdown-group .popup:hover {
    display: block;
}

.nav-service-dropdown-group .popup a {
    display: block;
    padding: 0.3rem 0;
    font-size: 0.85rem;
    color: var(--popup-link-text-color);
    transition: color 0.2s, padding-left 0.2s;
}

.nav-service-dropdown-group .popup a:hover {
    color: var(--link-hover-color);
    padding-left: 0.4rem;
    text-decoration: none;
}

.nav-service-dropdown-group .popup .unrelated-color {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    opacity: 0.5;
    margin-bottom: 0.5rem;
}

/* ── Divider ─────────────────────────────────────────────── */
.nav-dropdown-divider {
    height: 1px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
    margin: 0.35rem 0;
}

/* ── Mobile drawer ───────────────────────────────────────── */
.nav-drawer {
    position: fixed;
    z-index: 1001;
    width: min(380px, calc(100vw - 1.5rem));
    right: 0.75rem;
    top: 70px;
    background: var(--glass-bg-dark);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    padding: 1rem;
    height: calc(100vh - 82px);
    overflow-y: auto;
    left: auto;
    transform: translateX(115%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.35s ease;
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: var(--shadow-glass);
    opacity: 0;
}

.nav-drawer a {
    display: block;
}

.nav-drawer-content {
    display: flex;
    flex-direction: column;
    min-height: 100%;
    width: 100%;
    margin: auto;
    padding: 0;
    gap: 0.25rem;
}

.nav-drawer-divider {
    height: 1px;
    border-top: 1px solid var(--glass-border);
    margin: 0.45rem 0 0.6rem;
    opacity: 0.8;
}

.nav-drawer-content > a,
.nav-drawer-content .mb-2,
.nav-drawer-content .ms-3 a {
    display: block;
    padding: 0.45rem 0.75rem;
    border-radius: 10px;
    color: var(--left-panel-link);
    transition: background 0.2s ease, color 0.2s ease, padding-left 0.2s ease;
}

.nav-drawer-content > a:hover,
.nav-drawer-content .ms-3 a:hover {
    background: var(--left-panel-link-bg-color);
    color: var(--link-hover-color);
    padding-left: 1rem;
}

.nav-drawer-content .unrelated-color {
    color: var(--left-panel-title-color);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-top: 0.5rem;
    padding: 0 0.65rem;
}

.nav-drawer-content .ms-3 {
    margin-left: 0 !important;
    padding-left: 0;
}

.nav-drawer-content .ms-3 .unrelated-color {
    margin-top: 0.35rem;
    padding-top: 0;
}

.nav-drawer-content .ms-3 .unrelated-color:first-of-type {
    margin-top: 0.2rem;
    padding-top: 0;
}

.opened {
    transform: translateX(0);
    opacity: 1;
}

/* ── Nav toggle button ───────────────────────────────────── */
.nav-button-div, .nav-drawer {
    display: none;
}

.nav-button-div {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--glass-border);
    transition: background 0.25s, box-shadow 0.25s;
}

.nav-button-div:hover {
    background: rgba(255, 255, 255, 0.14);
    box-shadow: 0 0 12px rgba(54, 219, 231, 0.2);
}

.nav-button:hover {
    cursor: pointer;
    filter: drop-shadow(0 0 10px var(--link-hover-color));
    transition: all 0.3s;
}

/* ── User dropdown ───────────────────────────────────────── */
#user-dropdown-section {
    position: relative;
}

#user-dropdown-button {
    border-radius: 999px;
    padding: 0.3rem 0.9rem;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid var(--glass-border);
    transition: background 0.25s, box-shadow 0.25s;
    cursor: pointer;
}

#user-dropdown-button:hover,
#user-dropdown-section:hover #user-dropdown-button {
    background: rgba(255, 255, 255, 0.13);
    box-shadow: 0 0 14px var(--accent-glow);
}

#user-dropdown-box {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 10px);
    min-width: 200px;
    padding: 0.75rem;
    z-index: 1100;
    background: var(--popup-bg-color);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--shadow-glass);
    animation: popupFadeIn 0.2s ease;
}

#user-dropdown-box > div {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

#user-dropdown-box a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    border-radius: 10px;
    color: var(--popup-link-text-color);
    font-size: 0.875rem;
    transition: background 0.2s, color 0.2s;
}

#user-dropdown-box a:hover {
    background: var(--popup-link-bg-color);
    color: var(--link-hover-color);
    text-decoration: none;
}

.user-dropdown-section img {
    width: 1rem;
}

.mobile-option {
    display: none;
}

/* ── Drawer accordion helpers ────────────────────────────── */
.drawer-nav-service-accordion {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    cursor: pointer;
    overflow: hidden;
}

.drawer-nav-service-button {
    display: flex;
    gap: 0.5rem;
}

.drawer-nav-service-accordion-items {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    text-align: left;
}

/* ── Login button ────────────────────────────────────────── */
.header-button {
    padding: 0.45rem 1.1rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 600;
    background: rgba(54, 219, 231, 0.15);
    border: 1px solid rgba(54, 219, 231, 0.4);
    color: var(--link-hover-color);
    cursor: pointer;
    transition: background 0.25s, box-shadow 0.25s;
}

.header-button:hover {
    background: rgba(54, 219, 231, 0.28);
    box-shadow: 0 0 16px rgba(54, 219, 231, 0.35);
}

/* Light-mode button overrides */
[data-bs-theme="light"] .header-button {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    color: white;
}
[data-bs-theme="light"] .header-button:hover {
    background: rgba(255, 255, 255, 0.35);
    box-shadow: 0 0 16px rgba(255, 255, 255, 0.3);
}

/* ── Theme toggle switch ─────────────────────────────────── */
/*
  Sliding pill toggle.  Knob is on the left in dark mode, right in light.
  The ::after icon shows what mode you are currently in.
  dark  → knob left  + ☀ icon   (sun = currently dark, click for light)
  light → knob right + ☾ icon   (moon = currently light, click for dark)
*/
.themeToggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 28px;
    padding: 0 !important;
    margin-right: 0.9rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--glass-border);
    cursor: pointer;
    transition: background 0.3s, box-shadow 0.3s;
    position: relative;
    flex-shrink: 0;
    overflow: visible;
    /* no overflow:hidden – it clips the knob shadow */
}

[data-bs-theme="light"] .themeToggle {
    background: rgba(255, 255, 255, 0.22);
    border-color: rgba(255, 255, 255, 0.45);
}

.themeToggle:hover {
    background: rgba(255, 255, 255, 0.16);
    box-shadow: 0 0 12px var(--accent-glow);
}

/* Sliding knob */
.themeToggle::before {
    content: '';
    position: absolute;
    left: 4px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: white;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
    transition: left 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1;
}

/* Knob slides right in light mode */
[data-bs-theme="light"] .themeToggle::before {
    left: 28px;
}

/* Icon sits on the opposite side from the knob */
.themeToggle::after {
    content: '☀';
    position: absolute;
    right: 7px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.7rem;
    line-height: 1;
    color: var(--navbar-text);
    opacity: 0.9;
    pointer-events: none;
    transition: opacity 0.2s;
}

[data-bs-theme="light"] .themeToggle::after {
    content: '☾';
    right: auto;
    left: 7px;
}

/* ── Responsive ──────────────────────────────────────────── */
@media screen and (max-width: 1000px) {
    .header-nav {
        display: none;
    }
    .header-button {
        display: none;
    }
    .nav-button-div, .nav-drawer {
        display: flex;
    }
    .nav-drawer {
        display: block;
    }
    .header-right {
        justify-content: flex-end;
        align-items: center;
    }
}

@media screen and (max-width: 768px) {
    #notifications-modal .grid {
        grid-template-columns: auto auto;
    }
}

@media screen and (max-width: 480px) {
    .header-section {
        height: 60px;
    }
    .header-panel {
        height: 60px;
        padding: 0 1rem;
    }

    .nav-drawer {
        top: 64px;
        right: 0.5rem;
        width: calc(100vw - 1rem);
        height: calc(100vh - 72px);
        border-radius: 16px;
    }
    .header-button {
        display: none;
    }
    .mobile-option {
        display: block;
    }
    .fullsize-option {
        display: none;
    }
    #notifications-modal .grid {
        grid-template-columns: auto auto;
    }
}

@keyframes appear {
    0%   { opacity: 1; }
    30%  { opacity: 0.8; }
    60%  { opacity: 0; }
    100% { opacity: 1; }
}

/* ── end of header ───────────────────────────────────────── */