/* =====================================================
   HEADER.CSS - Navigation & Header Styles
   ===================================================== */

/* Header Base */
#header {
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

#header.scrolled {
    background: rgba(10, 10, 10, 0.95);
    border-bottom-color: rgba(255, 255, 255, 0.05);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

#header.scrolled nav {
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
}

/* Logo */
.logo-link {
    text-decoration: none;
    position: relative;
}

.logo-icon {
    box-shadow: 0 4px 15px rgba(15, 112, 191, 0.3);
    transition: all 0.3s ease;
}

.logo-link:hover .logo-icon {
    box-shadow: 0 6px 25px rgba(15, 112, 191, 0.5);
}

/* Navigation Links */
.nav-link {
    position: relative;
    color: #ffffff;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-link:hover {
    color: #0f70bf;
}

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

.nav-link.active {
    color: #0f70bf;
}

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

/* ── Header Search ── */
.header-search-trigger {
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 8px;
    color: #ffffff;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
    flex-shrink: 0;
}

.header-search-trigger:hover {
    background: rgba(15,112,191,0.2);
    border-color: rgba(15,112,191,0.4);
    color: #0f70bf;
}

/* Desktop search bar – hidden by default, expands in flex row */
.header-search-bar {
    flex: 0 0 0;
    width: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transition: flex-basis 0.35s cubic-bezier(0.16,1,0.3,1),
                opacity 0.25s ease,
                margin 0.35s ease;
    margin: 0;
}

.header-search-bar.visible {
    flex: 1 1 0;
    width: auto;
    overflow: visible;
    opacity: 1;
    pointer-events: all;
    margin: 0 1.5rem;
}

.header-search-form {
    display: flex;
    align-items: center;
    width: 100%;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(15,112,191,0.35);
    border-radius: 12px;
    padding: 0 1rem;
    gap: 0.75rem;
    height: 44px;
    white-space: nowrap;
    transition: border-color 0.2s ease;
}

.header-search-form:focus-within {
    border-color: rgba(15,112,191,0.7);
}

.header-search-icon-inner {
    color: #6b7280;
    flex-shrink: 0;
}

.header-search-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: #ffffff;
    font-size: 0.95rem;
    /* hide number spinner arrows */
    -moz-appearance: textfield;
}

.header-search-input::-webkit-outer-spin-button,
.header-search-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
}

.header-search-input::placeholder {
    color: #6b7280;
}

.header-search-close {
    background: none;
    border: none;
    color: #9ca3af;
    cursor: pointer;
    padding: 2px;
    display: flex;
    align-items: center;
    transition: color 0.2s ease;
    flex-shrink: 0;
}

.header-search-close:hover {
    color: #ffffff;
}

/* Collapsible nav when search is open (desktop) */
#nav-links {
    transition: opacity 0.2s ease, visibility 0.2s ease, max-width 0.35s cubic-bezier(0.16,1,0.3,1);
    max-width: 9999px;
    overflow: hidden;
}

.search-open #nav-links {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    max-width: 0;
    margin: 0;
    padding: 0;
    gap: 0;
}

/* CTA buttons fade but stay (keep right-side width stable) */
#nav-cta .hidden.lg\\:flex {
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.search-open #nav-cta .hidden.lg\\:flex {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* Mobile search bar – slides down below nav row */
.mobile-search-bar {
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    transition: max-height 0.35s cubic-bezier(0.16,1,0.3,1), opacity 0.3s ease, padding 0.3s ease;
}

.mobile-search-bar.visible {
    max-height: 80px;
    opacity: 1;
    padding-bottom: 0.75rem;
}

.mobile-search-form {
    display: flex;
    align-items: center;
    width: 100%;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(15,112,191,0.35);
    border-radius: 10px;
    padding: 0 1rem;
    gap: 0.75rem;
    height: 42px;
}

.mobile-search-input {
    flex: 1;
    min-width: 0;
    background: transparent;
    -webkit-appearance: none;
    appearance: none;
    border: none;
    outline: none;
    color: #ffffff;
    font-size: 0.95rem;
    -moz-appearance: textfield;
}

.mobile-search-input::-webkit-outer-spin-button,
.mobile-search-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
}

.mobile-search-input::placeholder {
    color: #6b7280;
}

/* Mobile Menu Button */
#mobile-menu-btn {
    background: none;
    border: none;
    position: relative;
    z-index: 100;
    cursor: pointer;
}

.menu-line {
    display: block;
    transition: all 0.3s ease;
    transform-origin: center;
}

#mobile-menu-btn.active .menu-line:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

#mobile-menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

#mobile-menu-btn.active .menu-line:nth-child(3) {
    width: 1.5rem;
    transform: translateY(-8px) rotate(-45deg);
}

/* ── Drawer Backdrop ── */
.drawer-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 200;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
}

.drawer-backdrop.visible {
    opacity: 1;
    pointer-events: all;
}

/* ── Drawer Panel ── */
.mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: min(320px, 85vw);
    height: 100dvh;
    background: #111111;
    border-left: 1px solid rgba(15, 112, 191, 0.15);
    z-index: 300;
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
}

.mobile-drawer.open {
    transform: translateX(0);
}

/* Drawer Header */
.drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    flex-shrink: 0;
}

.drawer-close {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #ffffff;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
}

.drawer-close:hover {
    background: rgba(15, 112, 191, 0.2);
    color: #0f70bf;
    border-color: rgba(15, 112, 191, 0.3);
}

/* Drawer Nav (scrollable) */
.drawer-nav {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0;
    overscroll-behavior: contain;
}

.drawer-nav::-webkit-scrollbar {
    width: 3px;
}

.drawer-nav::-webkit-scrollbar-track {
    background: transparent;
}

.drawer-nav::-webkit-scrollbar-thumb {
    background: rgba(15, 112, 191, 0.3);
    border-radius: 99px;
}

.drawer-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.drawer-link {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.875rem 1.5rem;
    color: #d1d5db;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.drawer-link:hover,
.drawer-link.active {
    color: #ffffff;
    background: rgba(15, 112, 191, 0.08);
    border-left-color: #0f70bf;
}

.drawer-link-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: rgba(15, 112, 191, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: #0f70bf;
    transition: background 0.2s ease;
}

.drawer-link:hover .drawer-link-icon,
.drawer-link.active .drawer-link-icon {
    background: rgba(15, 112, 191, 0.2);
}

/* Drawer Footer */
.drawer-footer {
    padding: 1.25rem 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex-shrink: 0;
}

.drawer-btn-outline {
    display: block;
    text-align: center;
    padding: 0.75rem 1rem;
    border: 1px solid rgba(15, 112, 191, 0.5);
    border-radius: 10px;
    color: #0f70bf;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.2s ease;
    background: transparent;
    cursor: pointer;
    width: 100%;
}

.drawer-btn-outline:hover {
    background: rgba(15, 112, 191, 0.1);
    border-color: #0f70bf;
}

.drawer-btn-primary {
    display: block;
    text-align: center;
    padding: 0.75rem 1rem;
    background: #0f70bf;
    border: 1px solid #0f70bf;
    border-radius: 10px;
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.2s ease;
    cursor: pointer;
    width: 100%;
}

.drawer-btn-primary:hover {
    background: #0a5a9c;
    border-color: #0a5a9c;
}

/* Header Animation on Load */
@keyframes headerSlideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

#header {
    animation: headerSlideDown 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Responsive */
@media (max-width: 1024px) {
    .nav-link {
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    #header nav {
        padding: 1rem 1.5rem;
    }

    .logo-link span {
        font-size: 1rem;
    }

    .logo-icon {
        width: 2.5rem;
        height: 2.5rem;
    }

    .logo-icon span {
        font-size: 1rem;
    }
}