/* ===== Template xanh trắng - Menu trên, nội dung dưới ===== */
:root {
    --primary: #0d6efd;
    --primary-dark: #0a58ca;
    --primary-light: #e7f1ff;
    --white: #ffffff;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-600: #6c757d;
    --gray-800: #212529;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ----- Trạng thái toàn dự án: chưa hoàn thành = dấu vàng, hoàn thành = tick xanh lá ----- */
.status-icon-done { color: #198754; font-weight: 700; margin-right: 4px; }
.status-icon-pending { color: #ffc107; font-weight: 700; margin-right: 4px; }

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--gray-100);
    color: var(--gray-800);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ----- Header / Menu trên ----- */
.site-header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 56px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.logo:hover {
    color: var(--primary-dark);
}

.logo-icon {
    height: 40px;
    width: auto;
    display: block;
    object-fit: contain;
}

.logo-text {
    white-space: nowrap;
}

.main-nav .nav-list {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 4px;
}

.main-nav .nav-list > li {
    position: relative;
}

.main-nav .nav-list > li > a {
    display: block;
    padding: 12px 16px;
    color: var(--gray-800);
    text-decoration: none;
    font-weight: 500;
    border-radius: 8px;
    transition: background .15s, color .15s;
}

.main-nav .nav-list > li > a:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.main-nav .nav-link-with-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.main-nav .nav-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    font-size: 0.75rem;
    font-weight: 600;
    color: #fff;
    background: #dc3545;
    border-radius: 10px;
}

.dropdown-toggle .caret {
    display: inline-block;
    margin-left: 4px;
    border: 4px solid transparent;
    border-top-color: currentColor;
    vertical-align: middle;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    padding: 6px 0;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity .2s, transform .2s, visibility .2s;
    margin-top: 4px;
}

.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li a {
    display: block;
    padding: 10px 16px;
    color: var(--gray-800);
    text-decoration: none;
    font-size: 0.95rem;
}

.dropdown-menu li a:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.dropdown-menu-right {
    left: auto;
    right: 0;
}

/* User đăng nhập: avatar + tên trên menu — căn giữa theo chiều dọc */
.user-menu-item > a.user-menu-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
}
.header-avatar-wrap {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--gray-200);
    flex-shrink: 0;
}
.header-avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    vertical-align: middle;
}
.header-avatar-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: var(--gray-600);
}
.header-user-name {
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
@media (max-width: 768px) {
    .header-user-name { max-width: 80px; }
}

/* ----- Nội dung chính bên dưới menu ----- */
.main-wrap {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 24px;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 24px;
}

.container {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 32px;
    margin-bottom: 24px;
}

/* ----- Trang chủ ----- */
.hello-message {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 12px;
    padding: 48px 32px;
    color: var(--white);
    text-align: center;
}

#message {
    font-size: 2rem;
    font-weight: 300;
}

/* ----- Form đăng nhập ----- */
.login-box {
    max-width: 400px;
    margin: 0 auto;
    text-align: left;
}

.login-box h2 {
    margin-bottom: 24px;
    color: var(--primary);
    font-size: 1.5rem;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--gray-800);
}

.form-group input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
}

.btn-login:hover {
    background: var(--primary-dark);
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.alert-success {
    background: #d1e7dd;
    color: #0f5132;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

/* ----- Trang đăng nhập (chỉ form, không menu) ----- */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 24px;
}

.login-page-wrap {
    width: 100%;
    max-width: 400px;
}

.login-card {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    padding: 32px;
}

.login-card-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 24px;
}

.login-footer {
    text-align: center;
    color: var(--gray-600);
    font-size: 0.9rem;
    margin-top: 24px;
}

/* ----- Footer ----- */
.site-footer {
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    margin-top: auto;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    text-align: center;
    color: var(--gray-600);
    font-size: 0.9rem;
}

/* ----- Hamburger / Mobile toggle ----- */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--gray-800);
}
.nav-toggle svg { display: block; }

/* ----- Table responsive wrapper ----- */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* ----- Utility ----- */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.content-animate {
    animation: fadeIn 0.3s ease-out;
}

/* ====== RESPONSIVE ====== */

/* Tablet */
@media (max-width: 1024px) {
    .header-inner { max-width: 100%; padding: 0 16px; }
    .main-wrap { max-width: 100%; padding: 16px; }
    .container { padding: 20px; }
}

/* Mobile */
@media (max-width: 768px) {
    .site-header { position: sticky; top: 0; z-index: 100; }
    .header-inner { min-height: 50px; padding: 0 12px; }
    .logo { gap: 8px; font-size: 1.1rem; }
    .logo-icon { height: 32px; }

    .nav-toggle { display: block; }

    .main-nav {
        display: none;
        position: fixed;
        top: 50px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--white);
        z-index: 200;
        overflow-y: auto;
        padding: 8px 0;
        box-shadow: 0 8px 24px rgba(0,0,0,.12);
    }
    .main-nav.open { display: block; }
    .main-nav .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }
    .main-nav .nav-list > li > a {
        padding: 14px 20px;
        border-radius: 0;
        border-bottom: 1px solid var(--gray-200);
    }
    .main-nav .nav-list > li:last-child > a { border-bottom: none; }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        transform: none;
        opacity: 1;
        visibility: visible;
        display: none;
        margin: 0;
        padding: 0;
        border-radius: 0;
        border-top: 1px solid var(--gray-200);
        background: var(--gray-100);
    }
    .dropdown-menu.show { display: block; }
    .dropdown-menu li a { padding: 12px 32px; font-size: 0.875rem; }
    .dropdown-menu-right { left: 0; right: auto; }

    .main-wrap { padding: 12px; }
    .container { padding: 14px; border-radius: 8px; }
    .page-title { font-size: 1.25rem; margin-bottom: 16px; }
    #message { font-size: 1.25rem; }
    .hello-message { padding: 32px 16px; border-radius: 8px; }
    .footer-inner { padding: 12px 16px; font-size: 0.8rem; }
}

@media (max-width: 480px) {
    .header-inner { padding: 0 8px; }
    .main-wrap { padding: 8px; }
    .container { padding: 10px; border-radius: 6px; }
    .page-title { font-size: 1.1rem; }
}