/* ==========================================================================
   HR1VIETNAM CERTIFICATE HUB - REDESIGNED SYSTEM (EDITORIAL PRINT SYSTEM)
   ========================================================================== */

:root {
    /* Color Palette - HR1 Career Readiness Atlas V1 */
    --paper: #F7F4EE;
    --paper-darker: #EEE9DF;
    --white: #FFFFFF;
    
    --ink: #101828;
    --graphite: #20242C;
    --muted: #667085;
    --line: rgba(16, 24, 40, 0.16);
    
    --red: #B11116;
    --deep-red: #892226;
    --red-soft: #F4E4E4;
    --gold: #EABB32;

    /* Typography */
    --sans: 'Be Vietnam Pro', system-ui, -apple-system, sans-serif;
    --serif: 'Lora', Georgia, serif;
    --ease: cubic-bezier(.16, 1, .3, 1);
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 0px; /* Editorial print style: sharp corners */

    --shadow-flat: 6px 6px 0px var(--ink);
    --shadow-flat-red: 6px 6px 0px var(--red);
    --transition: all 0.35s var(--ease);
}

/* Reset & Base */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--paper);
    color: var(--ink);
    font-family: var(--sans);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.shell {
    width: min(1320px, calc(100% - 48px));
    margin-inline: auto;
}

.hidden {
    display: none !important;
}

/* ==========================================================================
   TOP RIBBON & HEADER
   ========================================================================== */
.site-ribbon {
    background-color: var(--deep-red);
    color: var(--white);
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.ribbon-inner {
    display: flex;
    min-height: 34px;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding-inline: 12px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--line);
    background: rgba(247, 244, 238, 0.92);
    backdrop-filter: blur(18px) saturate(1.15);
}

.header-inner {
    display: flex;
    min-height: 86px;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
    color: var(--ink);
}

.brand-logo-img {
    height: 48px;
    width: auto;
    object-fit: contain;
}

.hutech-logo-link {
    display: block;
}

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

.partner-text {
    display: flex;
    flex-direction: column;
    padding-left: 14px;
    border-left: 1px solid var(--line);
}

.partner-title {
    font-weight: 900;
    font-size: 16px;
    letter-spacing: 0.5px;
    color: var(--ink);
    line-height: 1.2;
}

.partner-subtitle {
    font-size: 9px;
    color: var(--muted);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    line-height: 1.2;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.brand-text {
    display: flex;
    flex-direction: column;
    padding-left: 14px;
    border-left: 1px solid var(--line);
}

.brand-title {
    font-weight: 900;
    font-size: 16px;
    letter-spacing: 0.5px;
}

.brand-subtitle {
    font-size: 9px;
    color: var(--muted);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.main-nav {
    display: flex;
    gap: 20px;
    border: 1px solid var(--line);
    padding: 6px;
    background: var(--white);
}

.nav-link {
    background: transparent;
    border: none;
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
    padding: 10px 18px;
    cursor: pointer;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--ink);
}

.nav-link.active {
    background: var(--red);
    color: var(--white);
}

.university-pill {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--white);
    border: 1px solid var(--line);
    padding: 8px 16px;
    font-size: 12px;
    font-weight: 700;
}

.hutech-icon {
    width: 22px;
    height: 22px;
}

/* ==========================================================================
   BUTTON SYSTEM (SHARP & SHADOWED)
   ========================================================================== */
.button {
    display: inline-flex;
    min-height: 52px;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 0 24px;
    border: 1px solid var(--ink);
    background: transparent;
    font-size: 12px;
    font-weight: 800;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: var(--transition);
}

.button.primary {
    border-color: var(--red);
    background: var(--red);
    color: var(--white);
}

.button:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-flat);
}

.button.primary:hover {
    box-shadow: 6px 6px 0px var(--ink);
}

/* ==========================================================================
   HERO / SEARCH SECTION
   ========================================================================== */
.hero-card {
    background: var(--white);
    border: 1px solid var(--line);
    padding: 56px 40px;
    margin-top: 32px;
    position: relative;
    overflow: hidden;
    display: flex;
    gap: 40px;
}

.hero-rail {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    display: flex;
    width: 38px;
    align-items: center;
    flex-direction: column;
    padding-block: 24px;
    border-right: 1px solid var(--line);
    background: var(--paper-darker);
}

.hero-rail span {
    writing-mode: vertical-rl;
    font-size: 8px;
    font-weight: 900;
    letter-spacing: 0.18em;
    color: var(--ink);
}

.hero-rail i {
    width: 1px;
    flex: 1;
    margin-block: 16px;
    background: var(--line);
}

.hero-content-box {
    margin-left: 20px;
    width: 100%;
}

.micro-label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--deep-red);
    font-size: 9px;
    font-weight: 900;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.micro-label::before {
    content: "";
    width: 32px;
    height: 2px;
    background: var(--red);
}

.hero-title {
    margin: 0 0 16px;
    font-size: clamp(34px, 4.5vw, 68px);
    font-weight: 900;
    letter-spacing: -0.06em;
    line-height: 0.95;
    text-transform: uppercase;
}

.hero-title span {
    display: block;
}

.hero-title em {
    display: block;
    color: var(--red);
    font-family: var(--serif);
    font-size: 0.88em;
    font-weight: 500;
    letter-spacing: -0.04em;
    text-transform: none;
    font-style: italic;
}

.hero-desc {
    color: var(--muted);
    max-width: 680px;
    font-size: 14px;
    margin-bottom: 32px;
    line-height: 1.8;
}

.search-box {
    max-width: 720px;
}

.input-wrapper {
    display: flex;
    align-items: center;
    background: var(--paper);
    border: 1px solid var(--ink);
    padding: 6px 8px 6px 16px;
}

.input-icon {
    color: var(--muted);
    font-size: 18px;
    margin-right: 12px;
}

.input-wrapper input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--ink);
    font-size: 14px;
    font-weight: 600;
}

/* Alert system */
.alert {
    padding: 16px 24px;
    border: 1px solid var(--line);
    margin-top: 24px;
    display: flex;
    align-items: flex-start;
    gap: 14px;
    font-size: 13px;
    background: var(--white);
}

.alert-success {
    border-left: 4px solid var(--deep-red);
    color: var(--deep-red);
}

.alert-danger {
    border-left: 4px solid var(--red);
    color: var(--red);
}

/* ==========================================================================
   LOOKUP RESULTS & GRID
   ========================================================================== */
.result-area {
    margin-top: 28px;
}

.detail-grid {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: 32px;
    margin-top: 24px;
}

@media (max-width: 1024px) {
    .detail-grid {
        grid-template-columns: 1fr;
    }
}

.student-info-card {
    background: var(--white);
    border: 1px solid var(--line);
    padding: 24px;
    display: flex;
    flex-direction: column;
}

.student-info-card .card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--ink);
    margin-bottom: 20px;
}

.student-info-card .card-header h3 {
    font-family: var(--serif);
    font-size: 18px;
    font-weight: 700;
}

.badge-verified {
    background: var(--red-soft);
    color: var(--deep-red);
    font-size: 10px;
    font-weight: 800;
    padding: 4px 10px;
    letter-spacing: 0.5px;
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.info-item {
    display: flex;
    flex-direction: column;
    font-size: 13px;
}

.info-item .label {
    color: var(--muted);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
}

.info-item .value {
    font-weight: 700;
    color: var(--ink);
}

.info-item .value.highlight {
    color: var(--red);
    font-size: 16px;
    font-weight: 800;
}

.info-item .value.code {
    font-family: monospace;
    background: var(--paper);
    padding: 4px 10px;
    border: 1px solid var(--line);
    width: fit-content;
}

.action-panel {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--line);
}

.action-panel h4 {
    font-size: 12px;
    font-weight: 800;
    margin-bottom: 14px;
    text-transform: uppercase;
}

.button-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.btn-action {
    width: 100%;
    min-height: 48px;
    border: 1px solid var(--ink);
    font-weight: 800;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: var(--transition);
    background: var(--white);
    color: var(--ink);
}

.btn-pdf {
    background: var(--red);
    color: var(--white);
    border-color: var(--red);
}

.btn-pdf:hover {
    box-shadow: 4px 4px 0px var(--ink);
    transform: translateY(-2px);
}

.btn-png:hover {
    box-shadow: 4px 4px 0px var(--red);
    transform: translateY(-2px);
}

.btn-linkedin {
    background: #0a66c2;
    color: var(--white);
    border-color: #0a66c2;
}

.btn-linkedin:hover {
    box-shadow: 4px 4px 0px var(--ink);
    transform: translateY(-2px);
}

.hint-text {
    font-size: 11px;
    color: var(--muted);
    margin-top: 12px;
    text-align: center;
}

/* ==========================================================================
   OFFICIAL CERTIFICATE TEMPLATE (EDITORIAL PORTRAIT & PAPER FEEL)
   ========================================================================== */
.certificate-preview-card {
    background: var(--white);
    border: 1px solid var(--line);
    padding: 24px;
}

.preview-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--muted);
    font-weight: 700;
    margin-bottom: 16px;
}

.btn-small {
    background: var(--paper);
    border: 1px solid var(--line);
    padding: 6px 12px;
    font-size: 11px;
    cursor: pointer;
    font-weight: 700;
}

.certificate-wrapper-scroll {
    overflow-x: auto;
    padding: 10px 0;
}

/* Certificate Paper Frame */
.certificate-canvas-box {
    width: 840px;
    height: 594px; /* A4 Landscape aspect ratio */
    margin: 0 auto;
    background: #fcf9f2; /* Cream/Warm paper sheet */
    color: var(--ink);
    padding: 24px;
    box-shadow: 0 15px 35px rgba(16,24,40,0.12);
    position: relative;
    box-sizing: border-box;
}

/* Ornate Red Double Border */
.cert-border-outer {
    border: 5px double var(--red);
    height: 100%;
    padding: 6px;
    box-sizing: border-box;
}

.cert-border-inner {
    border: 1px solid rgba(177, 17, 22, 0.3);
    height: 100%;
    padding: 24px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background-image: radial-gradient(rgba(177, 17, 22, 0.035) 1px, transparent 1px);
    background-size: 20px 20px;
}

.cert-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(177, 17, 22, 0.2);
    padding-bottom: 12px;
}

.cert-brand {
    display: flex;
    align-items: center;
    gap: 8px;
}

.cert-logo-img {
    height: 38px;
    width: auto;
    object-fit: contain;
}

.cert-hutech-img {
    height: 36px;
    width: auto;
    object-fit: contain;
}

.cert-company-name {
    font-family: var(--serif);
    font-weight: 800;
    font-size: 18px;
    color: var(--ink);
    letter-spacing: 1px;
}

.cert-partner-logo {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.cert-partner-label {
    font-size: 8px;
    color: var(--muted);
    font-weight: 800;
    letter-spacing: 0.12em;
}

.cert-hutech-title {
    font-family: var(--sans);
    font-weight: 800;
    font-size: 14px;
    color: #004b8d;
}

/* Certificate Body Text */
.cert-body {
    text-align: center;
    margin: 6px 0;
}

.cert-main-title {
    font-family: var(--serif);
    font-size: 34px;
    font-weight: 700;
    color: var(--deep-red);
    letter-spacing: 2px;
    margin-bottom: 2px;
}

.cert-subtitle {
    font-size: 13px;
    font-weight: 800;
    color: var(--muted);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.cert-divider {
    width: 64px;
    height: 2px;
    background: var(--red);
    margin: 10px auto;
}

.cert-present-text {
    font-size: 12px;
    color: var(--muted);
    font-style: italic;
}

.cert-student-name {
    font-family: var(--serif);
    font-size: 32px;
    font-weight: 700;
    color: var(--ink);
    text-transform: uppercase;
    margin: 4px auto;
    border-bottom: 2px solid var(--red);
    display: inline-block;
    padding: 0 16px;
}

.cert-meta-row {
    font-size: 11px;
    color: var(--graphite);
    margin: 6px 0 10px;
    display: flex;
    justify-content: center;
    gap: 8px;
}

.cert-meta-row .dot {
    color: var(--red);
}

.cert-achievement-desc {
    font-size: 12px;
    color: var(--graphite);
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

.cert-achievement-desc strong {
    color: var(--deep-red);
}

/* Certificate Footer layout */
.cert-footer {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    border-top: 1px solid rgba(177, 17, 22, 0.15);
    padding-top: 12px;
}

.cert-qr-block {
    display: flex;
    align-items: center;
    gap: 10px;
}

.qr-code-box {
    width: 56px;
    height: 56px;
    background: transparent;
    padding: 0;
    border: none;
}

.qr-label {
    font-size: 8px;
    color: var(--muted);
    line-height: 1.3;
}

.sig-col-seal {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 160px;
}

.seal-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--red);
    color: var(--white);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 3px solid var(--paper);
    box-shadow: 0 4px 15px rgba(177, 17, 22, 0.25);
    font-size: 12px;
    font-weight: 900;
    text-align: center;
    line-height: 1.3;
}

.seal-circle i {
    font-size: 26px;
    margin-bottom: 4px;
}

.seal-circle small {
    font-size: 9px;
    font-weight: 800;
    letter-spacing: 0.5px;
}

.cert-signatures {
    display: flex;
    gap: 30px;
    align-items: center;
}

.sig-col {
    text-align: center;
    width: 160px;
}

.sig-role {
    font-size: 8px;
    font-weight: 800;
    color: var(--ink);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.sig-space {
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sig-font {
    font-family: var(--serif);
    font-style: italic;
    color: var(--deep-red);
    font-size: 15px;
    font-weight: 600;
}

.sig-name {
    font-size: 10px;
    font-weight: 800;
    color: var(--ink);
}

.sig-sub {
    font-size: 8px;
    color: var(--muted);
}

/* ==========================================================================
   ADMIN / VERIFY PAGES
   ========================================================================== */
.verify-card {
    background: var(--white);
    border: 1px solid var(--line);
    padding: 40px;
    max-width: 680px;
    margin: 0 auto;
}

.icon-circle {
    width: 60px;
    height: 60px;
    background: var(--red-soft);
    color: var(--red);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    margin: 0 auto 16px;
}

.text-center {
    text-align: center;
}

.verify-form {
    margin: 28px 0;
}

.verify-result {
    padding: 24px;
    border: 1px solid var(--line);
    margin-top: 24px;
}

/* Admin Dashboard CSS */
.admin-grid {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.admin-stats-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

@media (max-width: 768px) {
    .admin-stats-row {
        grid-template-columns: 1fr;
    }
}

.stat-card {
    background: var(--white);
    border: 1px solid var(--line);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    background: var(--paper);
    color: var(--ink);
}

.stat-number {
    font-family: var(--serif);
    font-size: 24px;
    font-weight: 800;
    color: var(--red);
    display: block;
}

.stat-label {
    font-size: 12px;
    color: var(--muted);
    font-weight: 700;
}

.admin-card {
    background: var(--white);
    border: 1px solid var(--line);
    padding: 28px;
}

.admin-card .card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.admin-card .card-header h3 {
    font-family: var(--serif);
    font-size: 20px;
}

.upload-area {
    border: 2px dashed var(--line);
    padding: 40px 20px;
    text-align: center;
    background: var(--paper);
    transition: var(--transition);
}

.upload-area:hover, .upload-area.dragover {
    border-color: var(--red);
    background: var(--red-soft);
}

.upload-icon {
    font-size: 40px;
    color: var(--red);
    margin-bottom: 12px;
}

.upload-title {
    font-weight: 800;
    font-size: 15px;
    margin-bottom: 4px;
}

.upload-desc {
    color: var(--muted);
    font-size: 12px;
    margin-bottom: 16px;
}

/* Data Table Grid */
.table-responsive {
    overflow-x: auto;
    margin-top: 16px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
}

.data-table th, .data-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--line);
}

.data-table th {
    background: var(--paper-darker);
    color: var(--ink);
    font-weight: 800;
}

.data-table tbody tr:hover {
    background: var(--paper);
}

.btn-delete {
    background: var(--red-soft);
    color: var(--red);
    border: 1px solid var(--red);
    padding: 4px 8px;
    cursor: pointer;
}

.btn-delete:hover {
    background: var(--red);
    color: var(--white);
}

/* ==========================================================================
   MODAL WINDOWS & FOOTER
   ========================================================================== */
.modal-backdrop {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(16, 24, 40, 0.6);
    backdrop-filter: blur(4px);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-box {
    background: var(--white);
    border: 1px solid var(--ink);
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-flat);
}

.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-family: var(--serif);
    font-size: 18px;
    font-weight: 700;
}

.btn-close-modal {
    background: none;
    border: none;
    color: var(--muted);
    font-size: 20px;
    cursor: pointer;
}

.modal-body {
    padding: 20px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 11px;
    font-weight: 800;
    margin-bottom: 6px;
    text-transform: uppercase;
}

.form-group input {
    width: 100%;
    background: var(--paper);
    border: 1px solid var(--line);
    padding: 10px 14px;
    color: var(--ink);
    outline: none;
}

.form-group input:focus {
    border-color: var(--red);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
}

.btn-secondary {
    background: var(--paper);
    border: 1px solid var(--line);
    color: var(--ink);
    padding: 10px 20px;
    font-weight: 700;
    cursor: pointer;
}

.linkedin-copy-box textarea {
    width: 100%;
    background: var(--paper);
    border: 1px solid var(--line);
    color: var(--ink);
    padding: 12px;
    font-size: 12px;
    resize: none;
    margin: 12px 0 8px;
    outline: none;
}

/* Footer style */
.footer {
    background: #080C14;
    color: rgba(255, 255, 255, 0.7);
    padding: 48px 0 30px;
    margin-top: auto;
    font-size: 12px;
    border-top: 2px solid var(--red);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 30px;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

.footer-logo-link {
    display: inline-block;
    margin-bottom: 12px;
}

.footer-logo-img {
    height: 38px;
    width: auto;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.footer h4 {
    color: var(--white);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.footer a {
    color: rgba(255, 255, 255, 0.62);
    text-decoration: none;
    transition: var(--transition);
}

.footer a:hover {
    color: var(--white);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding-top: 18px;
    font-size: 10px;
    color: rgba(255, 255, 255, 0.45);
}