/* =================================== */
/* 1. Desktop Header & Dropdown        */
/* =================================== */
.desktop-only-header { display: none; }
.desktop-only-breadcrumbs { display: none; }

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    gap: 20px;
}
.header-logo-img {
    /* Set a specific height for consistency */
    height: 120px; 
    display: block;
    filter: var(--color-logo-filter);
    transition: filter var(--transition-speed) ease;
}

.desktop-nav { display: flex; align-items: center; gap: 25px; }
.desktop-nav ul { display: flex; list-style: none; gap: 35px; align-items: center; }
.desktop-nav a, .desktop-nav .dropdown-toggle {
    color: var(--color-text-headings); font-weight: 600; padding: 10px 0; position: relative;
    transition: color 0.3s ease; background: none; border: none; cursor: pointer;
    font-family: var(--font-primary); font-size: 1rem;
}
.dropdown-toggle i { margin-left: 4px; transition: transform 0.3s ease; }
.desktop-nav li.active > a, .desktop-nav a:hover, .desktop-nav .dropdown-toggle:hover { color: var(--color-accent); }
.dropdown { position: relative; }
.dropdown::after {
    content: ''; position: absolute; left: -10px; right: -10px;
    top: 100%; height: 20px;
}
.dropdown-menu {
    position: absolute; top: calc(100% + 20px); left: 50%; background-color: var(--color-panel-bg);
    border: 1px solid var(--color-border); border-radius: 8px; box-shadow: var(--shadow-medium);
    padding: 10px; list-style: none; min-width: 200px; opacity: 0; visibility: hidden;
    pointer-events: none; transform: translateX(-50%) translateY(10px); transform-origin: top center;
    transition: all 0.3s ease; z-index: 100;
}
.dropdown:hover .dropdown-menu { opacity: 1; visibility: visible; pointer-events: auto; transform: translateX(-50%) translateY(0); }
.dropdown:hover .dropdown-toggle i { transform: rotate(180deg); }
.dropdown-menu a {
    display: block; padding: 12px 15px; border-radius: 6px; white-space: nowrap;
    color: var(--color-text); font-weight: 400;
}
.dropdown-menu a:hover { background-color: var(--color-bg-alt); color: var(--color-accent); }

/* =================================== */
/* 2. Dark Mode Toggle                 */
/* =================================== */
.dark-mode-toggle { display: flex; align-items: center; cursor: pointer; }
.toggle-track {
    width: 50px; height: 26px; background-color: #e0e0e0; border-radius: 13px;
    position: relative; transition: background-color var(--transition-speed) ease;
}
.toggle-thumb {
    width: 22px; height: 22px; background-color: white; border-radius: 50%;
    position: absolute; top: 2px; left: 2px; transition: transform var(--transition-speed) cubic-bezier(0.34, 1.56, 0.64, 1);
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem; overflow: hidden;
}
.toggle-thumb .ri-sun-line { color: #f39c12; }
.toggle-thumb .ri-moon-line { color: #8e44ad; }
.dark-mode-toggle input { display: none; }
.dark-mode-toggle input:checked + .toggle-track { background-color: var(--color-accent); }
.dark-mode-toggle input:checked + .toggle-track .toggle-thumb { transform: translateX(24px); }
body.dark-mode .toggle-track { background-color: #333; }
.toggle-thumb .ri-moon-line { display: none; }
.dark-mode-toggle input:checked + .toggle-track .toggle-thumb .ri-sun-line { display: none; }
.dark-mode-toggle input:checked + .toggle-track .toggle-thumb .ri-moon-line { display: block; }

/* =================================== */
/* 3. Mobile UI & Panel                */
/* =================================== */
.mobile-nav {
    position: fixed; bottom: 0; left: 0; width: 100%;
    height: var(--mobile-nav-height); background-color: var(--color-panel-bg);
    box-shadow: 0 -2px 15px rgba(0, 0, 0, 0.06); z-index: 1001;
    border-top: 1px solid var(--color-border);
}
.mobile-nav ul { list-style: none; display: flex; justify-content: space-around; align-items: stretch; height: 100%; }
.mobile-nav li { display: flex; }
.mobile-nav a, .mobile-nav button {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    color: #8892a3; font-size: 0.7rem; font-weight: 600; transition: color 0.3s ease;
    padding: 0 12px; flex-grow: 1; background: none; border: none; cursor: pointer;
    font-family: var(--font-primary);
}
.mobile-nav li.active a, .mobile-nav li.active button { color: var(--color-accent); }
.mobile-nav .nav-icon { font-size: 1.5rem; line-height: 1; margin-bottom: 5px; }
.services-panel {
    position: fixed; top: 0; right: 0; width: 85%; max-width: 320px;
    height: 100%; background-color: var(--color-panel-bg); z-index: 1003;
    box-shadow: -5px 0 30px rgba(0, 0, 0, 0.1);
    transform: translateX(100%); transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: flex; flex-direction: column;
}
.services-panel.open { transform: translateX(0); }
.panel-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 15px 20px; border-bottom: 1px solid var(--color-border); flex-shrink: 0;
}
.panel-logo {
    /* FIX: Standardized height to match the desktop header logo */
    height: 120px; 
    filter: var(--color-logo-filter);
    transition: filter var(--transition-speed) ease;
}
.close-panel-btn { font-size: 1.8rem; color: #999; background: none; border: none; cursor: pointer; padding: 5px; line-height: 1; }
.panel-content { padding: 10px; overflow-y: auto; flex-grow: 1; }
.services-list h4 { color: #aaa; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 1px; margin: 20px 15px 10px; }
.services-list a {
    display: block; padding: 14px 15px; border-radius: 8px; font-weight: 600;
    color: var(--color-text-headings); margin: 0 5px 8px; font-size: 1rem;
    transition: all 0.3s ease;
}
.services-list a:hover { background-color: var(--color-bg-alt); }
.panel-footer { padding: 20px; border-top: 1px solid var(--color-border); display: flex; justify-content: center; transition: border-color var(--transition-speed) ease; }
.panel-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(28, 42, 78, 0.5); z-index: 1002;
    opacity: 0; visibility: hidden; transition: opacity 0.4s ease, visibility 0s 0.4s;
}
.panel-overlay.active { opacity: 1; visibility: visible; transition: opacity 0.4s ease, visibility 0s; }

/* =================================== */
/* 4. Responsive Media Query           */
/* =================================== */
@media (min-width: 769px) {
    .desktop-only-header, .desktop-only-breadcrumbs { display: block; }
    .mobile-nav, .services-panel, .panel-overlay { display: none; }
    .desktop-only-header {
        background-color: var(--color-header-bg); backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px); position: fixed; top: 0; left: 0;
        width: 100%; height: var(--header-height); z-index: 1000; border-bottom: 1px solid var(--color-border);
        transition: background-color var(--transition-speed) ease, border-color var(--transition-speed) ease;
    }
}
