/* =========================================================
   HEADER & NAVIGATION CONTROLS
========================================================= */

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-header);
    background: rgba(255, 255, 255, 0.96) !important;
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 4px 20px rgba(7, 38, 168, 0.05);
    transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.main-header.sticky {
    background: rgba(255, 255, 255, 0.96) !important;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 4px 20px rgba(7, 38, 168, 0.05);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    width: 100%;
    height: 72px;
}

.logo {
    flex-shrink: 0;
}

.logo img {
    display: block;
    width: auto;
    max-height: 60px;
    max-width: 230px;
    object-fit: contain;
}

.main-header.sticky .logo img {
    max-height: 56px;
}

/* DESKTOP NAVIGATION */
.desktop-nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.desktop-nav ul {
    display: flex;
    align-items: center;
    gap: 42px;
}

.desktop-nav ul li a {
    position: relative;
    color: #0726A8 !important;
    font-size: 17px;
    font-weight: 700;
    padding: 5px 0;
    transition: all 0.25s ease;
}

.desktop-nav ul li a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -8px;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #0726A8, #1CB7F5) !important;
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-fast);
}

.desktop-nav ul li a:hover::after,
.desktop-nav ul li a.active::after {
    transform: scaleX(1);
}

.desktop-nav ul li a:hover,
.desktop-nav ul li a.active {
    color: #1CB7F5 !important;
}

/* HEADER RIGHT CONTROLS */
.header-right {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px !important;
}

.menu-toggle {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border-color-strong);
    border-radius: 12px;
    color: #111827;
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

body.light-mode .search-btn:hover,
body.light-mode .theme-toggle:hover,
body.light-mode .menu-toggle:hover {
    background: rgba(22, 191, 243, 0.10);
    border-color: rgba(22, 191, 243, 0.24);
}

.language-switch {
    display: none;
}

/* THEME DROPDOWN MENU */
.theme-dropdown {
    position: relative;
}

.theme-menu {
    position: absolute;
    top: 58px;
    right: 0;
    width: 190px;
    display: flex;
    flex-direction: column;
    padding: 8px;
    background: rgba(12, 18, 32, 0.78);
    backdrop-filter: blur(22px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px) scale(0.96);
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
    z-index: var(--z-overlay);
}

.theme-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.theme-menu button {
    width: 100%;
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.92);
    padding: 13px 14px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.theme-menu button:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #ffffff;
}

.theme-menu button.active {
    background: rgba(22, 191, 243, 0.16);
    color: #4fd8ff;
    font-weight: 600;
}

body.light-mode .theme-menu {
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

body.light-mode .theme-menu button {
    color: #111827;
}

body.light-mode .theme-menu button:hover {
    background: rgba(0, 0, 0, 0.05);
}

body.light-mode .theme-menu button.active {
    background: rgba(22, 191, 243, 0.12);
    color: var(--primary);
}

/* MOBILE NAVIGATION */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 320px;
    height: 100vh;
    background: var(--bg-secondary);
    z-index: var(--z-overlay);
    padding: 120px 40px;
    transition: right 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border-left: 1px solid var(--border-color);
    overflow-y: auto;
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav ul li {
    margin-bottom: 24px;
}

.mobile-nav ul li a {
    color: var(--text-white);
    font-size: 18px;
    font-weight: 500;
    font-family: 'Teko', sans-serif;
    letter-spacing: 2px;
    text-transform: uppercase;
    display: block;
    padding: 8px 0;
    transition: padding-left var(--transition-fast), color var(--transition-fast);
}

.mobile-nav ul li a:hover,
.mobile-nav ul li a.active {
    color: var(--accent);
    padding-left: 10px;
}

@media (max-width: 992px) {
    .desktop-nav { display: none; }
    .menu-toggle { display: block; }
}

/* 3-WAY THEME SWITCHER UI */
.theme-switcher {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 4px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color-strong);
    border-radius: 14px;
    backdrop-filter: blur(14px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08), inset 0 1px 1px rgba(255, 255, 255, 0.08);
}

body.light-mode .theme-switcher,
body.system-theme.light-mode .theme-switcher {
    background: rgba(255, 255, 255, 0.90);
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06), inset 0 1px 1px rgba(255, 255, 255, 0.7);
}

.theme-option {
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 10px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 13px;
    position: relative;
    overflow: hidden;
    transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.theme-option i {
    font-size: 13px;
    position: relative;
    z-index: 2;
}

.theme-option:hover {
    background: rgba(22, 191, 243, 0.12);
    color: var(--accent);
    transform: translateY(-1px);
}

.theme-option.active {
    background: var(--primary);
    color: #ffffff;
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(22, 191, 243, 0.35), inset 0 1px 1px rgba(255, 255, 255, 0.25);
}

.theme-option.active:hover {
    background: var(--primary-hover);
    color: #ffffff;
    transform: translateY(-1px);
}

body.light-mode .theme-option,
body.system-theme.light-mode .theme-option {
    color: #4b5563;
}

body.light-mode .theme-option:hover,
body.system-theme.light-mode .theme-option:hover {
    background: rgba(5, 38, 153, 0.08);
    color: var(--primary);
}

body.light-mode .theme-option.active,
body.system-theme.light-mode .theme-option.active {
    background: var(--primary);
    color: #ffffff;
}