/* ================================================================
   iEnglish Public Header - Role-Aware Navigation
   Màu chủ đạo: #d21f2f | Font: Montserrat / Open Sans
   ================================================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700;800;900&family=Open+Sans:wght@400;600&display=swap');

/* ── Variables ─────────────────────────────────────────────────── */
:root {
    --red:        #d21f2f;
    --red-dark:   #b71927;
    --red-light:  #fff0f1;
    --text:       #2c2c2c;
    --text-sub:   #666;
    --white:      #fff;
    --shadow-sm:  0 2px 12px rgba(0,0,0,.08);
    --shadow-md:  0 8px 28px rgba(0,0,0,.14);
    --radius-sm:  8px;
    --radius-md:  12px;
    --transition: .22s cubic-bezier(.4,0,.2,1);
}

/* ── Header Shell ──────────────────────────────────────────────── */
#site-header {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1100;
    border-bottom: 2px solid #f5f5f5;
    width: 100%;
}

.header-inner {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    height: 86px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    gap: 16px;
}

/* ── Logo ──────────────────────────────────────────────────────── */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    flex-shrink: 0;
}

.logo-circle {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: linear-gradient(135deg, #e82e3e 0%, #b71927 100%);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Montserrat', sans-serif;
    font-weight: 900;
    font-size: 16px;
    box-shadow: 0 4px 14px rgba(210,31,47,.35);
    transition: transform var(--transition), box-shadow var(--transition);
}

.logo:hover .logo-circle {
    transform: scale(1.08) rotate(-4deg);
    box-shadow: 0 6px 20px rgba(210,31,47,.45);
}

.logo-text h1 {
    font-family: 'Montserrat', sans-serif;
    color: var(--red);
    margin: 0;
    font-size: 21px;
    font-weight: 900;
    letter-spacing: .6px;
    line-height: 1;
}

.logo-text p {
    margin: 3px 0 0;
    font-size: 10.5px;
    font-style: italic;
    color: #aaa;
    font-family: 'Open Sans', sans-serif;
}

/* ── Nav Root ──────────────────────────────────────────────────── */
#mainNav ul {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0;
    padding: 0;
    flex-wrap: nowrap;
}

#mainNav ul > li {
    position: relative;
}

/* Root nav link */
#mainNav ul > li > a {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 13px;
    color: var(--text);
    text-decoration: none;
    letter-spacing: .3px;
    padding: 8px 11px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 5px;
    transition: color var(--transition), background var(--transition);
    white-space: nowrap;
}

#mainNav ul > li > a:hover,
#mainNav ul > li.active > a {
    color: var(--red);
    background: var(--red-light);
}

/* Active underline bar */
#mainNav ul > li.active > a::after {
    content: '';
    position: absolute;
    left: 13px;
    right: 13px;
    bottom: 4px;
    height: 2px;
    background: var(--red);
    border-radius: 2px;
}

/* Dropdown arrow for parent items */
#mainNav ul > li.has-sub > a::before {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
    margin-left: 4px;
    transition: transform var(--transition);
    flex-shrink: 0;
    order: 10;
}

#mainNav ul > li.has-sub:hover > a::before {
    transform: rotate(-180deg);
}

/* ── Dropdown Menu ─────────────────────────────────────────────── */
.has-sub .sub-menu {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    min-width: 220px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 8px 0;
    display: block;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
    z-index: 9999;
    border-top: 3px solid var(--red);
}

.has-sub:hover .sub-menu,
.has-sub:focus-within .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.has-sub .sub-menu li {
    display: block;
    width: 100%;
}

.has-sub .sub-menu a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    color: var(--text);
    font-family: 'Open Sans', sans-serif;
    font-size: 12.5px;
    font-weight: 600;
    white-space: nowrap;
    border-radius: 0;
    transition: background var(--transition), color var(--transition), padding-left var(--transition);
    text-decoration: none;
}

.has-sub .sub-menu a i {
    width: 16px;
    color: #bbb;
    font-size: 12px;
    transition: color var(--transition);
    flex-shrink: 0;
}

.has-sub .sub-menu a:hover {
    background: var(--red-light);
    color: var(--red);
    padding-left: 22px;
}

.has-sub .sub-menu a:hover i {
    color: var(--red);
}

/* Divider in dropdown */
.sub-menu-divider {
    height: 1px;
    background: #f0f0f0;
    margin: 6px 14px;
}

/* ── Login / Logout / User Area ────────────────────────────────── */
.nav-login-btn {
    border: none;
    background: linear-gradient(135deg, #e82e3e 0%, #b71927 100%);
    color: var(--white) !important;
    padding: 9px 20px;
    border-radius: var(--radius-sm);
    font-family: 'Montserrat', sans-serif;
    font-size: 12px;
    font-weight: 800;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    transition: all var(--transition);
    box-shadow: 0 3px 10px rgba(210,31,47,.3);
    white-space: nowrap;
    letter-spacing: .3px;
}

.nav-login-btn:hover {
    background: linear-gradient(135deg, #f03545 0%, #c41e2c 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(210,31,47,.4);
    color: var(--white) !important;
}

/* User info block (shown when logged in) */
.nav-user-block {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-user-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--red-light);
    border: 1.5px solid #fcc;
    border-radius: 30px;
    padding: 6px 14px 6px 8px;
    cursor: default;
    transition: box-shadow var(--transition);
}

.nav-user-chip:hover {
    box-shadow: 0 2px 10px rgba(210,31,47,.15);
}

.nav-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--red);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 800;
    font-family: 'Montserrat', sans-serif;
    flex-shrink: 0;
}

.nav-role-badge {
    font-size: 9.5px;
    font-weight: 700;
    background: var(--red);
    color: #fff;
    padding: 2px 7px;
    border-radius: 20px;
    font-family: 'Montserrat', sans-serif;
    letter-spacing: .4px;
}

/* Logout button */
.nav-logout-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: #888;
    border: 1.5px solid #ddd;
    padding: 7px 13px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    transition: all var(--transition);
    white-space: nowrap;
}

.nav-logout-btn:hover {
    color: var(--red);
    border-color: var(--red);
    background: var(--red-light);
}

/* ── Tên người dùng (hiển thị tĩnh trên menu) ─────────────────── */
.nav-user-name {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: #d21f2f;
    font-weight: 800;
    font-family: 'Montserrat', sans-serif;
    font-size: 13px;
    max-width: 130px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    background: #fff5f6;
    border: 1.5px solid #fcc;
    border-radius: 20px;
    padding: 5px 12px;
    cursor: default;
}

/* ── Nút đăng xuất ─────────────────────────────────────────────── */
.nav-logout-link {
    display: inline-flex !important;
    align-items: center !important;
    gap: 5px !important;
    color: #777 !important;
    font-weight: 700 !important;
    font-family: 'Montserrat', sans-serif !important;
    font-size: 13px !important;
    border: 1.5px solid #ddd !important;
    border-radius: var(--radius-sm) !important;
    padding: 6px 12px !important;
    text-decoration: none !important;
    white-space: nowrap !important;
    transition: all var(--transition) !important;
}

.nav-logout-link:hover {
    color: var(--red) !important;
    border-color: var(--red) !important;
    background: var(--red-light) !important;
}

/* ── Hamburger (mobile) ────────────────────────────────────────── */
.nav-toggle {
    display: none;
    background: none;
    border: 1.5px solid #ddd;
    border-radius: var(--radius-sm);
    padding: 8px 10px;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all var(--transition);
}

/* ── Responsive ────────────────────────────────────────────────── */
@media (max-width: 1200px) {
    #mainNav ul { gap: 3px; }
    #mainNav ul > li > a { padding: 7px 8px; font-size: 12px; }
    .nav-user-name { max-width: 100px; font-size: 12px; padding: 4px 10px; }
    .nav-logout-link { font-size: 12px !important; padding: 5px 9px !important; }
}

@media (max-width: 1024px) {
    #mainNav ul { gap: 2px; }
    #mainNav ul > li > a { padding: 6px 7px; font-size: 11.5px; }
    .nav-user-name { max-width: 80px; font-size: 11.5px; padding: 4px 8px; }
    .nav-logout-link { font-size: 11.5px !important; padding: 5px 8px !important; }
}

@media (max-width: 820px) {
    .nav-toggle { display: flex; }

    #mainNav {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--white);
        box-shadow: 0 8px 24px rgba(0,0,0,.12);
        padding: 12px 0 18px;
        z-index: 1099;
    }

    #mainNav.open { display: block; }

    #mainNav ul {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 0 12px;
    }

    #mainNav ul > li > a {
        padding: 12px 14px;
        border-radius: var(--radius-sm);
    }

    .has-sub .sub-menu {
        position: static;
        box-shadow: none;
        border-top: none;
        border-left: 3px solid var(--red);
        border-radius: 0;
        margin-left: 14px;
        padding: 4px 0;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none;
    }

    .has-sub.open-sub .sub-menu { display: block; }

    .header-inner { height: 72px; }
    .logo-circle { width: 42px; height: 42px; font-size: 14px; }
    .logo-text h1 { font-size: 18px; }
}

@media (max-width: 480px) {
    .header-inner { padding: 0 14px; gap: 10px; }
    .logo { gap: 8px; min-width: 0; }
    .logo-text h1 { font-size: 16px; letter-spacing: .2px; }
    .logo-text p { display: none; }
    .nav-login-btn { width: 100%; justify-content: center; }
}