/*
 * EMIS.Payment — Hệ thống Giao diện Cổng Thu Học Phí Trực Tuyến
 * Trường Đại học Khoa học Tự nhiên — ĐHQG-HCM
 * Lưu trữ nội bộ (Offline 100%), chuẩn tương phản WCAG AA/AAA & Quy ước Kế toán Việt Nam
 */

@view-transition {
    navigation: auto;
}

@property --spot-x {
    syntax: "<percentage>";
    inherits: true;
    initial-value: 80%;
}

@property --spot-y {
    syntax: "<percentage>";
    inherits: true;
    initial-value: 30%;
}

@property --spot-opacity {
    syntax: "<number>";
    inherits: true;
    initial-value: 0;
}

:root {
    --font-sans: "Be Vietnam Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

    /* Bảng màu Chính thức Trường ĐH Khoa học Tự nhiên (trích xuất chuẩn từ https://hcmus.edu.vn/) */
    --brand-primary: #003f88;
    --brand-primary-hover: #012e6f;
    --brand-primary-active: #002254;
    --brand-accent-vibrant: #0766ff;
    --brand-link: #003f88;
    --brand-navy: #0a2d63;
    --brand-header-start: #0b53b8;
    --brand-header-end: #003f88;
    --brand-banner-start: #0b53b8;
    --brand-banner-end: #003f88;
    --brand-footer-bg: #003f88;

    /* Quy ước Kế toán Việt Nam: Đỏ rõ nét cho số tiền công nợ */
    --money-red: #b91c1c;
    --money-red-bg: #fef2f2;
    --money-red-border: #fecaca;

    /* Bề mặt phân tầng theo tông xanh ĐH KHTN */
    --surface-canvas: #eef3f9;
    --surface-card: #ffffff;
    --surface-subtle: #f5f8fc;
    --surface-table-head: #e3ecf7;
    --surface-row-hover: #f1f6fc;
    --surface-active-tab: #e6effa;
    --surface-input: #f8fafd;

    /* Chữ & Tương phản */
    --text-primary: #0f2544;
    --text-secondary: #344b6d;
    --text-muted: #526684;
    --text-placeholder: #526887;
    --text-on-dark: #ffffff;
    --text-on-dark-muted: rgba(255, 255, 255, 0.86);

    /* Viền & Bề mặt kính trên nền xanh đậm ĐH KHTN */
    --border-subtle: #d6e1f0;
    --border-strong: #b9cce4;
    --border-input: #b9cce4;
    --border-on-dark: rgba(255, 255, 255, 0.22);
    --glass-surface-bg: rgba(255, 255, 255, 0.10);
    --glass-surface-border: rgba(255, 255, 255, 0.24);
    --glass-surface-hover-bg: rgba(255, 255, 255, 0.20);
    --glass-surface-hover-border: rgba(255, 255, 255, 0.44);
    --glass-meta-bg: rgba(255, 255, 255, 0.10);
    --glass-meta-border: rgba(255, 255, 255, 0.18);
    --glass-meta-divider: rgba(255, 255, 255, 0.22);
    --icon-on-dark: #93c5fd;
    --focus-ring-on-dark: #ffffff;

    /* Trạng thái ngữ nghĩa */
    --status-success-bg: #ecfdf3;
    --status-success-border: #a7f3d0;
    --status-success-text: #146c32;
    --status-ktx-primary: #146c32;
    --status-ktx-hover: #0e5225;

    --status-pending-bg: #fffbeb;
    --status-pending-border: #fde68a;
    --status-pending-text: #9a4406;

    --status-danger-bg: #fef2f2;
    --status-danger-border: #fecaca;
    --status-danger-text: #b42318;

    /* Độ bo góc & Chiều sâu */
    --radius-xs: 6px;
    --radius-sm: 8px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --shadow-card: 0 8px 24px -8px rgba(0, 63, 136, 0.10), 0 2px 6px rgba(0, 63, 136, 0.05);
    --shadow-modal: 0 20px 40px -12px rgba(9, 30, 66, 0.18);
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-out-quart: cubic-bezier(0.22, 1, 0.36, 1);
}

::selection {
    background-color: var(--brand-primary);
    color: var(--text-on-dark);
}

html,
body {
    min-height: 100%;
    font-family: var(--font-sans);
    font-size: 15px;
    color: var(--text-primary);
    background-color: var(--surface-canvas);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
}

body {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    caret-color: var(--brand-primary);
}

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6,
p, a, button, input, select, textarea, label,
.footer-area a,
.swal2-popup,
.swal2-title,
.swal2-html-container,
.swal2-confirm,
.swal2-cancel,
.swal2-deny {
    font-family: var(--font-sans);
}

a {
    color: var(--brand-link);
    text-decoration: none;
    transition: color 150ms var(--ease-out), background-color 150ms var(--ease-out), border-color 150ms var(--ease-out);
}

a:hover,
a:focus {
    color: var(--brand-primary-hover);
    text-decoration: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--brand-primary);
    outline-offset: 2px;
}

input:focus:not(:focus-visible),
button:focus:not(:focus-visible),
a:focus:not(:focus-visible) {
    outline: none;
}

/* Preloader */
.preloader {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 999999;
    background-color: var(--brand-primary);
    transition: opacity 200ms var(--ease-out), visibility 200ms var(--ease-out);
}

.preloader.preloader-deactivate {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    display: none;
}

/* Khung chính của Cổng thông tin: Tách các vùng chức năng thành các khối độc lập (không gom 1 cục) */
.body-content {
    flex: 1 0 auto;
    width: 100%;
    max-width: 1240px;
    padding: 1.35rem 1rem 2.25rem;
}

.emis-portal-shell {
    display: flex;
    flex-direction: column;
    gap: 1.15rem;
    background-color: transparent;
    border: none;
    box-shadow: none;
    overflow: visible;
}

/* Khối 1: Thẻ Header Định danh Trường & Sinh viên (Chuẩn tông xanh https://hcmus.edu.vn/: #0b53b8 -> #003f88 + Overdrive @property Spotlight) */
.emis-profile-banner {
    --spot-x: 80%;
    --spot-y: 30%;
    --spot-opacity: 0;
    --parallax-x: 0px;
    --parallax-y: 0px;
    position: relative;
    overflow: hidden;
    isolation: isolate;
    view-transition-name: emis-profile-banner;
    background:
        radial-gradient(520px circle at 14% -20%, rgba(56, 189, 248, 0.16) 0%, transparent 65%),
        linear-gradient(135deg, var(--brand-header-start) 0%, var(--brand-header-end) 100%);
    color: var(--text-on-dark);
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.22);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.28),
        0 12px 28px -8px rgba(0, 63, 136, 0.26),
        0 4px 10px -2px rgba(0, 34, 84, 0.12);
    transition: --spot-opacity 260ms var(--ease-out), box-shadow 220ms var(--ease-out);
}

/* Lớp ánh sáng khúc xạ tương tác theo con trỏ chuột (GPU-composited) */
.emis-profile-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background: radial-gradient(
        480px circle at var(--spot-x) var(--spot-y),
        rgba(56, 189, 248, 0.24) 0%,
        rgba(7, 102, 255, 0.12) 42%,
        transparent 76%
    );
    opacity: var(--spot-opacity);
    transition: opacity 260ms var(--ease-out);
}

/* Viền ánh sáng phản chiếu cạnh trên của thẻ kính */
.emis-profile-banner::after {
    content: "";
    position: absolute;
    top: 0;
    left: 6%;
    right: 6%;
    height: 1px;
    pointer-events: none;
    z-index: 1;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.48) 30%,
        rgba(147, 197, 253, 0.65) 55%,
        rgba(255, 255, 255, 0.35) 80%,
        transparent 100%
    );
}

/* Họa tiết quỹ đạo Khoa học Tự nhiên phản hồi Parallax nhẹ */
.emis-banner-watermark {
    position: absolute;
    right: -10px;
    top: -12px;
    height: 118%;
    width: auto;
    color: var(--icon-on-dark);
    pointer-events: none;
    z-index: 0;
    transform: translate3d(var(--parallax-x), var(--parallax-y), 0);
    transition: transform 180ms var(--ease-out);
}

/* Đảm bảo viền Focus bàn phím đạt chuẩn tương phản cao (10.3:1) trên nền xanh đậm #003f88 */
.emis-profile-banner a:focus-visible,
.emis-profile-banner button:focus-visible,
.emis-footer a:focus-visible {
    outline: 2px solid var(--focus-ring-on-dark);
    outline-offset: 2px;
}

.emis-profile-top {
    position: relative;
    z-index: 2;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.95rem;
}

.emis-profile-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.emis-profile-logo-box {
    background-color: var(--surface-card);
    padding: 6px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.45);
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 14px rgba(0, 22, 58, 0.22);
    transition: transform 200ms var(--ease-out), box-shadow 200ms var(--ease-out);
}

.emis-profile-brand:hover .emis-profile-logo-box {
    transform: translateY(-1px);
    box-shadow: 0 8px 18px rgba(0, 22, 58, 0.28);
}

.emis-profile-logo-box img {
    width: 54px;
    height: 54px;
    object-fit: contain;
}

.emis-institution-title {
    margin: 0;
    color: var(--text-on-dark);
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.emis-institution-sub {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-on-dark-muted);
    letter-spacing: 0.03em;
    line-height: 1.3;
}

.emis-institution-main {
    font-size: 1.28rem;
    font-weight: 800;
    color: var(--text-on-dark);
    letter-spacing: -0.015em;
    line-height: 1.25;
    text-shadow: 0 1px 2px rgba(0, 24, 64, 0.22);
}

/* Thanh thông tin sinh viên bọc trong thẻ kính mờ bên trong Header */
.emis-student-meta-bar {
    position: relative;
    z-index: 2;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.65rem 1.25rem;
    padding: 0.58rem 1.05rem;
    background:
        radial-gradient(320px circle at var(--spot-x) 50%, rgba(255, 255, 255, 0.08) 0%, transparent 80%),
        var(--glass-meta-bg);
    border: 1px solid var(--glass-meta-border);
    border-radius: var(--radius-md);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.emis-student-meta-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 1.15rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.emis-student-meta-list li {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.9rem;
    color: var(--text-on-dark);
    font-weight: 500;
}

.emis-student-meta-list li:not(:last-child) {
    padding-right: 1.15rem;
    border-right: 1px solid var(--glass-meta-divider);
}

.emis-student-meta-list li i {
    color: var(--icon-on-dark);
    font-size: 1.05rem;
}

.emis-student-meta-list li .meta-label {
    color: var(--text-on-dark-muted);
    font-weight: 500;
}

.emis-student-meta-list li strong {
    font-weight: 700;
    color: var(--text-on-dark);
}

/* Nút sao chép nhanh Mã số sinh viên (Tactile Copy Chip + Spring Feedback, vùng chạm chuẩn >= 44px) */
.emis-mssv-copy-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.42rem;
    min-height: 34px;
    padding: 0.22rem 0.62rem;
    margin: -0.15rem -0.25rem;
    border-radius: var(--radius-sm);
    background-color: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.16);
    color: var(--text-on-dark);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 160ms var(--ease-out), border-color 160ms var(--ease-out), transform 160ms var(--ease-out);
}

/* Mở rộng vùng nhận diện chạm lên >= 44px mà không làm phình chiều cao thanh thông tin */
.emis-mssv-copy-btn::after {
    content: "";
    position: absolute;
    inset: -6px 0;
}

.emis-mssv-copy-btn:hover,
.emis-mssv-copy-btn:focus-visible {
    background-color: rgba(255, 255, 255, 0.18);
    border-color: rgba(255, 255, 255, 0.38);
}

.emis-mssv-copy-btn:active {
    transform: scale(0.97);
}

.emis-mssv-copy-btn .emis-mssv-icon-copy {
    font-size: 0.92rem;
    color: rgba(255, 255, 255, 0.68);
    transition: color 150ms var(--ease-out), transform 150ms var(--ease-out);
}

.emis-mssv-copy-btn:hover .emis-mssv-icon-copy {
    color: var(--text-on-dark);
    transform: scale(1.08);
}

.emis-mssv-copied-pill {
    display: none;
    align-items: center;
    gap: 0.2rem;
    padding: 0.12rem 0.5rem;
    border-radius: var(--radius-xs);
    background-color: var(--status-success-text);
    border: 1px solid var(--status-success-border);
    color: var(--text-on-dark);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.18);
    transform: scale(1);
    opacity: 1;
    transition: transform 200ms var(--ease-out), opacity 200ms var(--ease-out);
}

.emis-mssv-copied-pill i {
    color: var(--text-on-dark) !important;
    font-size: 0.9rem !important;
}

.emis-mssv-copy-btn.is-copied {
    background-color: rgba(20, 108, 50, 0.35);
    border-color: var(--status-success-border);
}

.emis-mssv-copy-btn.is-copied .emis-mssv-icon-copy {
    display: none;
}

.emis-mssv-copy-btn.is-copied .emis-mssv-copied-pill {
    display: inline-flex;
}

@starting-style {
    .emis-mssv-copy-btn.is-copied .emis-mssv-copied-pill {
        transform: scale(0.82);
        opacity: 0;
    }
}

.emis-profile-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.55rem;
}

.emis-btn-account {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.42rem;
    min-height: 44px;
    padding: 0.45rem 0.95rem;
    border-radius: var(--radius-md);
    font-size: 0.86rem;
    font-weight: 600;
    white-space: nowrap;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 150ms var(--ease-out), border-color 150ms var(--ease-out), color 150ms var(--ease-out);
}

.emis-btn-account-guide,
.emis-btn-account-secondary {
    background-color: var(--glass-surface-bg);
    border: 1px solid var(--glass-surface-border);
    color: var(--text-on-dark);
}

.emis-btn-account-guide:hover,
.emis-btn-account-guide:focus,
.emis-btn-account-secondary:hover,
.emis-btn-account-secondary:focus {
    background-color: var(--glass-surface-hover-bg);
    border-color: var(--glass-surface-hover-border);
    color: var(--text-on-dark);
}

/* Nút Đăng xuất: Đồng bộ chất liệu kính trên nền xanh ở trạng thái nghỉ (tránh pha đỏ+xanh thành tím xỉn), chuyển sang đỏ đặc #b91c1c khi hover/focus */
.emis-btn-account-logout {
    background-color: var(--glass-surface-bg);
    border: 1px solid var(--glass-surface-border);
    color: var(--text-on-dark);
}

.emis-btn-account-logout i {
    color: #fecaca;
    transition: color 150ms var(--ease-out);
}

.emis-btn-account-logout:hover,
.emis-btn-account-logout:focus {
    background-color: var(--money-red);
    border-color: var(--money-red-border);
    color: var(--text-on-dark);
}

.emis-btn-account-logout:hover i,
.emis-btn-account-logout:focus i {
    color: var(--text-on-dark);
}

/* Khối 2: Thanh điều hướng Tab & Nút Thanh toán nổi độc lập trên nền trang */
.emis-nav-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.85rem;
    padding: 0;
    background-color: transparent;
    border: none;
}

.emis-nav-tabs {
    view-transition-name: emis-nav-tabs;
    display: inline-flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.3rem;
    list-style: none;
    margin: 0;
    padding: 0.35rem;
    background-color: #dce7f6;
    border: 1px solid #cddbef;
    border-radius: 12px;
    box-shadow: inset 0 1px 2px rgba(0, 63, 136, 0.05);
}

.emis-nav-tabs li a {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    min-height: 42px;
    padding: 0.42rem 1.1rem;
    border-radius: 9px;
    font-size: 0.9rem;
    font-weight: 600;
    color: #1e3a5f;
    background-color: transparent;
    border: 1px solid transparent;
    transition: background-color 150ms var(--ease-out), color 150ms var(--ease-out), box-shadow 150ms var(--ease-out);
}

.emis-nav-tabs li a:hover,
.emis-nav-tabs li a:focus {
    color: var(--brand-navy);
    background-color: rgba(255, 255, 255, 0.6);
}

.emis-nav-tabs li a.active {
    view-transition-name: emis-active-tab-pill;
    color: var(--brand-primary);
    background-color: #ffffff;
    border-color: rgba(194, 207, 226, 0.5);
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(15, 37, 68, 0.1), 0 1px 2px rgba(15, 37, 68, 0.05);
}

::view-transition-group(emis-profile-banner),
::view-transition-group(emis-nav-tabs),
::view-transition-group(emis-active-tab-pill) {
    animation-duration: 240ms;
    animation-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
}

.emis-pay-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
}

/* Nút nộp tiền chuẩn nghiệp vụ tài chính (không dùng kiểu viên thuốc lồng viên thuốc) */
.emis-btn-pay {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 44px;
    padding: 0.5rem 1.1rem;
    border-radius: var(--radius-md);
    font-size: 0.925rem;
    font-weight: 700;
    color: var(--text-on-dark);
    border: 1px solid transparent;
    cursor: pointer;
    font-variant-numeric: tabular-nums;
    transition: background-color 150ms var(--ease-out), border-color 150ms var(--ease-out), opacity 150ms var(--ease-out);
}

.emis-btn-pay:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.emis-btn-pay-hp {
    background-color: var(--brand-primary);
    border-color: var(--brand-primary-hover);
}

.emis-btn-pay-hp:hover:not(:disabled),
.emis-btn-pay-hp:focus:not(:disabled) {
    background-color: var(--brand-primary-hover);
    color: var(--text-on-dark);
}

.emis-btn-pay-hp:active:not(:disabled) {
    background-color: var(--brand-primary-active);
}

.emis-btn-pay-ktx {
    background-color: var(--status-ktx-primary);
    border-color: var(--status-ktx-hover);
}

.emis-btn-pay-ktx:hover:not(:disabled),
.emis-btn-pay-ktx:focus:not(:disabled) {
    background-color: var(--status-ktx-hover);
    color: var(--text-on-dark);
}

.emis-btn-pay-amount {
    display: inline-block;
    padding-left: 0.6rem;
    margin-left: 0.15rem;
    border-left: 1px solid rgba(255, 255, 255, 0.32);
    color: var(--text-on-dark);
    font-size: 0.925rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

/* Khối 3: Thẻ Bảng dữ liệu chính (Bo góc độc lập, nổi bật trên nền #eef1f6) */
.emis-section-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem 1rem;
    padding: 1rem 1.5rem;
    background-color: var(--surface-card);
    border: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.emis-section-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--brand-navy);
    margin: 0;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
}

.emis-section-title i {
    color: var(--brand-primary);
    font-size: 1.15rem;
}

.emis-section-hint {
    font-size: 0.84rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin: 0;
}

/* Bảng dữ liệu kế toán & Thanh cuộn tùy biến mảnh */
.emis-table-wrap {
    padding: 0;
    margin-top: -1.15rem;
    background-color: var(--surface-card);
    border: 1px solid var(--border-subtle);
    border-top: none;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

.emis-table-scroll {
    max-height: 540px;
    overflow-y: auto;
    overflow-x: auto;
    background-color: var(--surface-card);
    scrollbar-width: thin;
    scrollbar-color: var(--border-strong) var(--surface-subtle);
}

.emis-table-scroll::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.emis-table-scroll::-webkit-scrollbar-track {
    background: var(--surface-subtle);
}

.emis-table-scroll::-webkit-scrollbar-thumb {
    background-color: var(--border-strong);
    border-radius: 4px;
}

.emis-table-scroll::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-secondary);
}

.emis-data-table {
    width: 100%;
    margin-bottom: 0;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.925rem;
    color: var(--text-primary);
}

.emis-data-table thead th {
    position: sticky;
    top: 0;
    z-index: 2;
    background-color: var(--surface-table-head);
    color: var(--brand-navy);
    font-weight: 600;
    padding: 0.75rem 0.875rem;
    border-bottom: 1px solid var(--border-strong);
    white-space: nowrap;
    vertical-align: middle;
}

.emis-data-table tbody td {
    padding: 0.75rem 0.875rem;
    border-bottom: 1px solid var(--border-subtle);
    vertical-align: middle;
}

.emis-data-table tbody tr.clsContent:hover {
    background-color: var(--surface-row-hover);
}

.emis-data-table tfoot td,
.emis-data-table tr.emis-summary-row td {
    position: sticky;
    bottom: 0;
    z-index: 1;
    background-color: var(--surface-subtle);
    color: var(--brand-navy);
    font-weight: 600;
    padding: 0.8rem 0.875rem;
    border-top: 1px solid var(--border-strong);
}

.num-col {
    text-align: right !important;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

/* Chữ đỏ kế toán Việt Nam dịu mắt cho số tiền công nợ / cần nộp / tổng cộng */
.money-red-val,
.clsCheckKhoanThu,
#idSumTong,
#idSumTong strong {
    color: var(--money-red) !important;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

/* Chữ xanh lá trầm cho số tiền đã nộp thành công (tách biệt với công nợ chưa nộp) */
.money-paid-val {
    color: var(--status-success-text) !important;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.khoan-thu-title {
    display: inline;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
}

.emis-empty-state {
    padding: 2.5rem 1rem !important;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.975rem;
    font-weight: 600;
}

/* Khối 4: Bộ 3 thẻ thông tin hướng dẫn nghiệp vụ tách rời bên dưới bảng */
.emis-portal-footnote {
    padding: 0;
    background-color: transparent;
    border: none;
}

.emis-portal-footnote-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.emis-portal-footnote-item {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    padding: 0.95rem 1.15rem;
    background-color: var(--surface-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    box-shadow: 0 2px 8px -2px rgba(15, 37, 68, 0.04);
    font-size: 0.82rem;
    line-height: 1.48;
    color: var(--text-secondary);
}

.emis-portal-footnote-item i {
    color: var(--brand-primary);
    font-size: 1.15rem;
    margin-top: 0.1rem;
    flex-shrink: 0;
}

.emis-portal-footnote-item strong {
    color: var(--brand-navy);
    font-weight: 700;
}

/* Footer chuẩn WCAG AAA & vùng chạm >= 44x44px */
.emis-footer {
    flex-shrink: 0;
    background-color: var(--brand-footer-bg);
    border-top: 1px solid var(--border-on-dark);
    color: var(--text-on-dark);
    padding: 1rem 0;
}

.emis-footer-title {
    font-size: 0.86rem;
    font-weight: 700;
    color: var(--text-on-dark);
    margin: 0 0 0.15rem 0;
    line-height: 1.35;
}

.emis-footer-copyright {
    font-size: 0.79rem;
    color: var(--text-on-dark-muted);
    margin: 0.15rem 0 0 0;
}

.emis-footer-copyright a {
    color: #93c5fd;
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 0.2em;
    display: inline-flex;
    align-items: center;
    padding: 0.1rem 0.2rem;
}

.emis-footer-contact {
    padding-top: 0.5rem;
    border-top: 1px solid var(--border-on-dark);
}

@media (min-width: 992px) {
    .emis-footer-contact {
        padding-top: 0;
        padding-left: 1.75rem;
        border-top: none;
        border-left: 1px solid var(--border-on-dark);
    }
}

.emis-footer-contact .contact-us-link {
    list-style: none;
    padding-left: 0;
    margin-bottom: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem 1.25rem;
}

.emis-footer-contact .contact-us-link li {
    margin-bottom: 0;
    color: var(--text-on-dark);
    font-size: 0.83rem;
    line-height: 1.4;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.emis-footer-contact .contact-us-link li:first-child {
    flex: 0 0 100%;
}

.emis-footer-contact .contact-us-link li i {
    font-size: 0.95rem;
    color: var(--icon-on-dark);
    flex-shrink: 0;
}

.emis-footer-contact .contact-us-link a {
    color: var(--text-on-dark);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    padding: 0.1rem 0.15rem;
}

.emis-footer-contact .contact-us-link a:hover,
.emis-footer-contact .contact-us-link a:focus {
    color: #ffffff;
    text-decoration: underline;
}

/* Nút cuộn lên đầu trang đạt chuẩn 44x44px */
.go-top {
    position: fixed;
    cursor: pointer;
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    border-radius: var(--radius-md);
    background-color: var(--brand-primary);
    color: var(--text-on-dark);
    border: 1px solid var(--brand-primary-hover);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    z-index: 40;
    opacity: 0;
    visibility: hidden;
    transition: opacity 180ms var(--ease-out), background-color 150ms var(--ease-out);
}

.go-top.active {
    opacity: 1;
    visibility: visible;
}

.go-top:hover,
.go-top:focus {
    background-color: var(--brand-primary-hover);
    color: var(--text-on-dark);
}

@media (max-width: 767.98px) {
    .body-content {
        padding: 0.75rem 0.5rem 1.5rem;
    }

    .emis-profile-banner {
        padding: 1rem;
    }

    .emis-profile-top {
        flex-direction: column;
        align-items: stretch;
        gap: 0.85rem;
    }

    .emis-institution-main {
        font-size: 1.08rem;
    }

    .emis-profile-actions {
        width: 100%;
    }

    .emis-profile-actions .emis-btn-account {
        flex: 1 1 calc(50% - 0.3rem);
    }

    .emis-student-meta-bar {
        padding: 0.75rem 0.9rem;
    }

    .emis-student-meta-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.45rem;
        width: 100%;
    }

    .emis-student-meta-list li:not(:last-child) {
        padding-right: 0;
        border-right: none;
    }

    .emis-mssv-copy-btn {
        min-height: 44px;
        padding: 0.35rem 0.75rem;
        margin: 0;
    }

    .emis-nav-toolbar {
        padding: 0.75rem 1rem;
    }

    .emis-nav-tabs {
        width: 100%;
        display: flex;
    }

    .emis-nav-tabs li {
        flex: 1 1 100%;
    }

    .emis-nav-tabs li a {
        width: 100%;
        justify-content: flex-start;
    }

    .emis-pay-actions {
        width: 100%;
    }

    .emis-btn-pay {
        width: 100%;
        justify-content: space-between;
    }

    .emis-section-bar {
        padding: 0.75rem 1rem;
    }

    .emis-data-table {
        min-width: 680px;
    }

    .emis-portal-footnote {
        padding: 0;
    }

    .emis-portal-footnote-list {
        grid-template-columns: 1fr;
        gap: 0.65rem;
    }
}

/* Giảm chuyển động không gian nhưng vẫn giữ phản hồi đổi màu trạng thái (WCAG 2.3.3) */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after,
    ::view-transition-group(*),
    ::view-transition-old(*),
    ::view-transition-new(*) {
        animation: none !important;
        transform: none !important;
        scroll-behavior: auto !important;
    }

    .preloader {
        display: none !important;
    }
}