/* ═══════════════════════════════════════════════════════════
   chung.css - Global styles - LIGHT THEME
   KHONG chua JS hay HTML
   ═══════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ─── CSS Variables - Light Theme ───────────────────────── */
:root {
    --mau-nen:          #f0f4fb;
    --mau-nen-2:        #e4ecf7;
    --mau-the:          #ffffff;
    --mau-the-hover:    #f5f8ff;
    --mau-vien:         rgba(0, 90, 200, 0.14);
    --mau-vien-sang:    rgba(0, 112, 224, 0.35);

    --mau-chinh:        #0070e0;
    --mau-chinh-toi:    #0055b8;
    --mau-chinh-nhat:   #e8f2ff;
    --mau-xanh-la:      #00a65a;
    --mau-xanh-la-nhat: #e6f7ef;
    --mau-do:           #dc2626;
    --mau-do-nhat:      #fef2f2;
    --mau-vang:         #d97706;
    --mau-vang-nhat:    #fffbeb;
    --mau-tim:          #7c3aed;

    --mau-chu:          #0f172a;
    --mau-chu-mo:       #475569;
    --mau-chu-min:      #94a3b8;

    --bong-the:         0 1px 3px rgba(0,0,0,0.06), 0 4px 16px rgba(0,80,200,0.08);
    --bong-chinh:       0 0 0 3px rgba(0,112,224,0.15), 0 4px 16px rgba(0,112,224,0.2);
    --bong-xanh-la:     0 4px 14px rgba(0,166,90,0.2);
    --bong-navbar:      0 1px 0 rgba(0,80,200,0.1), 0 2px 12px rgba(0,0,0,0.06);

    --canh-tron:        14px;
    --canh-tron-nho:    8px;
    --thoi-gian:        0.25s;
    --font:             'Inter', sans-serif;
}

/* ─── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; overflow-x: hidden; }

body {
    font-family: var(--font);
    background-color: var(--mau-nen);
    color: var(--mau-chu);
    min-height: 100vh;
    line-height: 1.6;
    font-size: 14px;
    overflow-x: hidden;
}

a { color: var(--mau-chinh); text-decoration: none; transition: color var(--thoi-gian); }
a:hover { color: var(--mau-chinh-toi); }
img { max-width: 100%; height: auto; }
ul { list-style: none; }

/* ─── Scrollbar ──────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--mau-nen-2); }
::-webkit-scrollbar-thumb { background: #c5d4e8; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #a0b5cf; }

/* ─── Navbar ─────────────────────────────────────────────── */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    height: 64px;
    background: #ffffff;
    border-bottom: 1px solid rgba(0, 80, 200, 0.1);
    box-shadow: var(--bong-navbar);
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--mau-chu);
    letter-spacing: -0.5px;
}

.navbar-logo .logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--mau-chinh), #00b4ff);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: 0 4px 12px rgba(0,112,224,0.3);
}

.navbar-menu { display: flex; align-items: center; gap: 4px; }

.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: var(--canh-tron-nho);
    color: var(--mau-chu-mo);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--thoi-gian);
    border: 1px solid transparent;
}

.nav-link:hover { background: var(--mau-chinh-nhat); color: var(--mau-chinh); }
.nav-link.active {
    background: var(--mau-chinh-nhat);
    color: var(--mau-chinh);
    border-color: rgba(0,112,224,0.2);
    font-weight: 600;
}

.navbar-user { display: flex; align-items: center; gap: 16px; }

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--canh-tron-nho);
    transition: background var(--thoi-gian);
}
.user-info:hover { background: var(--mau-chinh-nhat); }

.user-avatar {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--mau-chinh), var(--mau-tim));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    box-shadow: 0 2px 8px rgba(0,112,224,0.25);
}

.user-name { font-size: 13px; font-weight: 600; color: var(--mau-chu); }
.user-role { font-size: 11px; color: var(--mau-chu-mo); }

.btn-dang-xuat {
    padding: 7px 14px;
    background: var(--mau-do-nhat);
    border: 1px solid rgba(220,38,38,0.25);
    border-radius: var(--canh-tron-nho);
    color: var(--mau-do);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--thoi-gian);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.btn-dang-xuat:hover { background: #fee2e2; color: #b91c1c; }

/* ─── Layout chinh ───────────────────────────────────────── */
.trang-chinh { max-width: 1400px; margin: 0 auto; padding: 32px 24px; }

/* ─── The (Card) ─────────────────────────────────────────── */
.the {
    background: var(--mau-the);
    border: 1px solid var(--mau-vien);
    border-radius: var(--canh-tron);
    padding: 24px;
    box-shadow: var(--bong-the);
    transition: border-color var(--thoi-gian), box-shadow var(--thoi-gian);
}
.the:hover {
    border-color: var(--mau-vien-sang);
    box-shadow: var(--bong-chinh);
}
.the-tieu-de {
    font-size: 15px;
    font-weight: 600;
    color: var(--mau-chu);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ─── Button ─────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    border-radius: var(--canh-tron-nho);
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font);
    cursor: pointer;
    border: none;
    transition: all var(--thoi-gian);
    white-space: nowrap;
    text-decoration: none;
}

.btn-chinh {
    background: linear-gradient(135deg, var(--mau-chinh), var(--mau-chinh-toi));
    color: #fff;
    box-shadow: 0 2px 10px rgba(0,112,224,0.3);
}
.btn-chinh:hover {
    background: linear-gradient(135deg, #1a84f0, var(--mau-chinh));
    box-shadow: 0 4px 16px rgba(0,112,224,0.4);
    transform: translateY(-1px);
    color: #fff;
}

.btn-xanh-la {
    background: linear-gradient(135deg, var(--mau-xanh-la), #00875a);
    color: #fff;
    box-shadow: var(--bong-xanh-la);
}
.btn-xanh-la:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(0,166,90,0.35); color: #fff; }

.btn-do {
    background: var(--mau-do-nhat);
    border: 1px solid rgba(220,38,38,0.3);
    color: var(--mau-do);
}
.btn-do:hover { background: #fee2e2; border-color: var(--mau-do); }

.btn-vien {
    background: transparent;
    border: 1px solid var(--mau-vien-sang);
    color: var(--mau-chinh);
}
.btn-vien:hover { background: var(--mau-chinh-nhat); border-color: var(--mau-chinh); }

.btn-nho { padding: 5px 12px; font-size: 12px; }

/* ─── Form ───────────────────────────────────────────────── */
.form-nhom { margin-bottom: 16px; }

.form-nhan {
    display: block;
    font-size: 11px;
    font-weight: 700;
    color: var(--mau-chu-mo);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    margin-bottom: 6px;
}

.form-o-nhap {
    width: 100%;
    padding: 10px 14px;
    background: #f8fafc;
    border: 1.5px solid #e2e8f0;
    border-radius: var(--canh-tron-nho);
    color: var(--mau-chu);
    font-size: 14px;
    font-family: var(--font);
    transition: border-color var(--thoi-gian), box-shadow var(--thoi-gian);
    outline: none;
}
.form-o-nhap:focus {
    border-color: var(--mau-chinh);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(0,112,224,0.12);
}
.form-o-nhap::placeholder { color: var(--mau-chu-min); }

.form-o-chon {
    width: 100%;
    padding: 10px 14px;
    background: #f8fafc;
    border: 1.5px solid #e2e8f0;
    border-radius: var(--canh-tron-nho);
    color: var(--mau-chu);
    font-size: 14px;
    font-family: var(--font);
    outline: none;
    cursor: pointer;
    transition: border-color var(--thoi-gian);
}
.form-o-chon:focus { border-color: var(--mau-chinh); background: #fff; }

/* ─── Bang du lieu ───────────────────────────────────────── */
.bang-container { overflow-x: auto; border-radius: var(--canh-tron); }

.bang { width: 100%; border-collapse: collapse; font-size: 13px; }

.bang thead th {
    background: #f8fafc;
    color: var(--mau-chu-mo);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1.5px solid #e2e8f0;
    white-space: nowrap;
}

.bang tbody tr {
    border-bottom: 1px solid #f1f5f9;
    transition: background var(--thoi-gian);
}
.bang tbody tr:hover { background: #f5f8ff; }

.bang tbody td { padding: 12px 16px; color: var(--mau-chu); vertical-align: middle; }

/* ─── Badge ──────────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
}
.badge-xanh-la { background: var(--mau-xanh-la-nhat); color: #047857; border: 1px solid rgba(0,166,90,0.25); }
.badge-do      { background: var(--mau-do-nhat); color: var(--mau-do); border: 1px solid rgba(220,38,38,0.2); }
.badge-vang    { background: var(--mau-vang-nhat); color: #92400e; border: 1px solid rgba(217,119,6,0.25); }
.badge-xanh    { background: var(--mau-chinh-nhat); color: var(--mau-chinh); border: 1px solid rgba(0,112,224,0.2); }
.badge         { background: #f1f5f9; color: var(--mau-chu-mo); border: 1px solid #e2e8f0; }

/* ─── Tieu de trang ─────────────────────────────────────── */
.tieu-de-trang { margin-bottom: 28px; }
.tieu-de-trang h1 { font-size: 26px; font-weight: 700; color: var(--mau-chu); letter-spacing: -0.5px; }
.tieu-de-trang p  { font-size: 14px; color: var(--mau-chu-mo); margin-top: 4px; }

/* ─── Modal ──────────────────────────────────────────────── */
.modal-overlay {
    position: fixed; inset: 0;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: flex; align-items: center; justify-content: center;
    padding: 20px;
    opacity: 0; pointer-events: none;
    transition: opacity var(--thoi-gian);
}
.modal-overlay.hien { opacity: 1; pointer-events: all; }

.modal {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: var(--canh-tron);
    padding: 28px;
    width: 100%;
    max-width: 480px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15), 0 4px 16px rgba(0,80,200,0.1);
    transform: translateY(16px) scale(0.98);
    transition: transform var(--thoi-gian);
}
.modal-overlay.hien .modal { transform: translateY(0) scale(1); }

.modal-tieu-de { font-size: 17px; font-weight: 700; color: var(--mau-chu); margin-bottom: 20px; display: flex; align-items: center; gap: 8px; }
.modal-hanh-dong { display: flex; gap: 10px; justify-content: flex-end; margin-top: 24px; }

/* ─── Thong bao (msg class) ──────────────────────────────── */
.msg {
    position: fixed; top: 80px; right: 24px;
    z-index: 3000;
    display: flex; flex-direction: column; gap: 10px;
    pointer-events: none;
}
.msg-item {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 18px;
    border-radius: var(--canh-tron-nho);
    font-size: 13px; font-weight: 600;
    min-width: 280px; max-width: 380px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.12);
    pointer-events: all;
    animation: truot-vao 0.3s ease;
    background: #fff;
}
.msg-item.an-di { animation: truot-ra 0.3s ease forwards; }

.msg-thanh-cong { border-left: 4px solid var(--mau-xanh-la); color: #047857; border-top: 1px solid #d1fae5; border-right: 1px solid #d1fae5; border-bottom: 1px solid #d1fae5; }
.msg-loi        { border-left: 4px solid var(--mau-do); color: #b91c1c; border-top: 1px solid #fecaca; border-right: 1px solid #fecaca; border-bottom: 1px solid #fecaca; }
.msg-canh-bao   { border-left: 4px solid var(--mau-vang); color: #92400e; border-top: 1px solid #fde68a; border-right: 1px solid #fde68a; border-bottom: 1px solid #fde68a; }
.msg-thong-tin  { border-left: 4px solid var(--mau-chinh); color: var(--mau-chinh-toi); border-top: 1px solid #bfdbfe; border-right: 1px solid #bfdbfe; border-bottom: 1px solid #bfdbfe; }

@keyframes truot-vao { from { transform: translateX(120%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes truot-ra  { from { transform: translateX(0);   opacity: 1; } to { transform: translateX(120%); opacity: 0; } }

/* ─── Spinner ────────────────────────────────────────────── */
.spinner {
    width: 18px; height: 18px;
    border: 2px solid rgba(0,112,224,0.2);
    border-top-color: var(--mau-chinh);
    border-radius: 50%;
    animation: quay 0.7s linear infinite;
    display: inline-block;
}
@keyframes quay { to { transform: rotate(360deg); } }

/* ─── Trang thai trong ───────────────────────────────────── */
.trang-thai-trong {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    padding: 60px 20px;
    color: var(--mau-chu-mo);
    gap: 12px;
}
.trang-thai-trong .bieu-tuong { font-size: 48px; opacity: 0.4; }
.trang-thai-trong p { font-size: 14px; }

/* ─── Responsive ─────────────────────────────────────────── */

/* Profile avatar lon trong modal */
.profile-avatar-lon {
    width: 64px; height: 64px;
    background: linear-gradient(135deg, var(--mau-chinh), var(--mau-tim));
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 26px; font-weight: 700; color: #fff;
    margin: 0 auto 20px;
    box-shadow: 0 4px 16px rgba(0,112,224,0.25);
}

.duong-phan-cach {
    font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.6px;
    color: var(--mau-chu-min);
    border-top: 1px solid #e2e8f0;
    padding-top: 14px; margin: 14px 0 4px;
}

/* Hamburger button (chi hien tren mobile) */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none; border: none;
    cursor: pointer; padding: 4px 8px;
}
.hamburger span {
    display: block; width: 22px; height: 2px;
    background: var(--mau-chu-mo);
    border-radius: 2px;
    transition: all 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* user-text an tren man nho */
.user-text { display: flex; flex-direction: column; }

.mobile-only-user {
    display: none;
}

@media (max-width: 900px) {
    /* An text logout */
    .text-logout { display: none; }

    /* An user-text tren tablet */
    .user-text { display: none; }

    /* Giu avatar, an text user-info */
    .user-info {
        padding: 4px;
        gap: 0;
    }

    .navbar { padding: 0 16px; }
}

@media (max-width: 768px) {
    /* Hamburger hien */
    .hamburger { display: flex; z-index: 1001; position: relative; }
    
    /* An nut tk va dang xuat tren taskbar */
    .desktop-only { display: none !important; }

    /* Hien trong menu */
    .mobile-only-user {
        display: flex;
        flex-direction: column;
        border-top: 1px solid #e2e8f0;
        margin-top: 8px;
        padding-top: 8px;
        gap: 4px;
    }

    /* Menu don xep xuong duoi navbar */
    .navbar-menu {
        display: none;
        position: fixed;
        top: 64px; left: 0; right: 0;
        background: #fff;
        border-bottom: 1px solid #e2e8f0;
        box-shadow: 0 8px 24px rgba(0,0,0,0.1);
        flex-direction: column;
        padding: 12px 16px;
        gap: 4px;
        z-index: 999;
    }
    .navbar-menu.mo { display: flex;align-items: stretch; }

    .nav-link {
        padding: 10px 14px;
        border-radius: 8px;
    }

    /* Trang chinh */
    .trang-chinh { padding: 16px 12px; }

    /* Modal full width tren mobile */
    .modal { padding: 20px 16px; }
}

@media (max-width: 480px) {
    .navbar-logo span { display: none; }
    .btn-dang-xuat { padding: 7px 10px; }
    .luoi-thong-ke { grid-template-columns: 1fr 1fr; }
    .the-tieu-de { font-size: 14px; }
}

/* ─── Nut cuon len dau trang (Mobile only) ─── */
.btn-cuon-len {
    display: none;
}

@media (max-width: 768px) {
    .btn-cuon-len {
        display: flex;
        position: fixed;
        bottom: 24px;
        right: 24px;
        z-index: 2000;
        width: 44px;
        height: 44px;
        border-radius: 50%;
        background: var(--mau-chinh);
        color: white;
        border: none;
        box-shadow: 0 4px 16px rgba(0, 112, 224, 0.35);
        font-size: 20px;
        cursor: pointer;
        align-items: center;
        justify-content: center;
        transition: opacity 0.3s, transform 0.3s;
        opacity: 0;
        pointer-events: none;
        transform: translateY(20px);
    }
    .btn-cuon-len.hien {
        opacity: 1;
        pointer-events: all;
        transform: translateY(0);
    }
    .btn-cuon-len:active {
        background: var(--mau-chinh-toi);
        transform: translateY(2px);
    }
}