.serp-portal {
    max-width: 600px;
    width: 100%;
    margin: 30px auto;
    overflow-x: clip;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --serp-bg: #f5f5f5;
    --serp-card-bg: #fff;
    --serp-text: #1d2327;
    --serp-text-muted: #666;
    --serp-border: #e0e0e0;
    --serp-input-bg: #fff;
}

.serp-portal.serp-dark,
.serp-portal.serp-dark-auto {
    --serp-bg: #1a1a1a;
    --serp-card-bg: #2d2d2d;
    --serp-text: #e8eaed;
    --serp-text-muted: #9aa0a6;
    --serp-border: #444;
    --serp-input-bg: #3c3c3c;
}

@media (prefers-color-scheme: dark) {
    .serp-portal.serp-dark-auto {
        --serp-bg: #1a1a1a;
        --serp-card-bg: #2d2d2d;
        --serp-text: #e8eaed;
        --serp-text-muted: #9aa0a6;
        --serp-border: #444;
        --serp-input-bg: #3c3c3c;
    }
}

@media (prefers-color-scheme: light) {
    .serp-portal.serp-dark-auto {
        --serp-bg: #f5f5f5;
        --serp-card-bg: #fff;
        --serp-text: #1d2327;
        --serp-text-muted: #666;
        --serp-border: #e0e0e0;
        --serp-input-bg: #fff;
    }
}

.serp-portal .serp-card {
    background: var(--serp-card-bg);
    color: var(--serp-text);
}
.serp-portal .serp-input {
    background: var(--serp-input-bg);
    color: var(--serp-text);
    border-color: var(--serp-border);
}
.serp-portal .serp-description,
.serp-portal .serp-instruction,
.serp-portal .serp-label,
.serp-portal .serp-share-desc {
    color: var(--serp-text-muted);
}
.serp-portal .serp-info-row .serp-label {
    color: var(--serp-text-muted);
}
.serp-portal .serp-student-item {
    background: var(--serp-card-bg);
    border-color: var(--serp-border);
    color: var(--serp-text);
}
.serp-portal .serp-note-box {
    background: var(--serp-input-bg);
    color: var(--serp-text);
}
.serp-portal .serp-lang-opt {
    background: var(--serp-card-bg);
    border-color: var(--serp-border);
    color: var(--serp-text-muted);
}
.serp-portal .serp-step-label {
    color: var(--serp-text-muted);
}
.serp-portal .serp-loading-text {
    color: var(--serp-text-muted);
}

.serp-lang-switcher {
    text-align: right;
    margin-bottom: 10px;
}
.serp-rtl .serp-lang-switcher {
    text-align: left;
}
.serp-lang-opt {
    display: inline-block;
    padding: 4px 12px;
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-left: 4px;
    color: #666;
    background: #f9f9f9;
    transition: background .15s, color .15s;
}
.serp-lang-opt:hover {
    background: var(--serp-primary, #1a73e8);
    color: #fff;
    border-color: var(--serp-primary, #1a73e8);
}
.serp-lang-opt.active {
    background: var(--serp-primary, #1a73e8);
    color: #fff;
    border-color: var(--serp-primary, #1a73e8);
    cursor: default;
}

.serp-steps {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
    position: relative;
}
.serp-steps::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 40px;
    right: 40px;
    height: 2px;
    background: #e0e0e0;
    z-index: 0;
}
.serp-step {
    text-align: center;
    position: relative;
    z-index: 1;
    flex: 1;
}
.serp-step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #e0e0e0;
    color: #666;
    font-weight: 700;
    font-size: 16px;
    margin: 0 auto 8px;
    transition: all 0.3s ease;
}
.serp-step.active .serp-step-number {
    background: var(--serp-primary, #1a73e8);
    color: #fff;
    box-shadow: 0 2px 8px rgba(26, 115, 232, 0.4);
}
.serp-step.completed .serp-step-number {
    background: var(--serp-secondary, #34a853);
    color: #fff;
}
.serp-step-label {
    display: block;
    font-size: 11px;
    color: #999;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.serp-step.active .serp-step-label { color: var(--serp-primary, #1a73e8); font-weight: 600; }
.serp-step.completed .serp-step-label { color: var(--serp-secondary, #34a853); }

.serp-step-content { display: none; }
.serp-step-content.active { display: block; animation: serpFadeIn 0.4s ease; }

@keyframes serpFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

.serp-card {
    background: var(--serp-card-bg, #fff);
    color: var(--serp-text, #1d2327);
    border-radius: 12px;
    padding: 40px 30px;
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    border: 1px solid #f0f0f0;
    max-width: 100%;
    min-width: 0;
    overflow-x: clip;
}
.serp-card h2 {
    margin: 0 0 10px;
    font-size: 24px;
    color: #1d2327;
    text-align: center;
}
.serp-card h3 {
    margin: 0 0 15px;
    font-size: 20px;
    color: #1d2327;
}
.serp-card h4 {
    margin: 0 0 15px;
    font-size: 16px;
    color: #1d2327;
    border-bottom: 2px solid var(--serp-primary, #1a73e8);
    padding-bottom: 8px;
    display: inline-block;
}
.serp-description {
    text-align: center;
    color: #666;
    margin-bottom: 25px;
    font-size: 14px;
}

.serp-logo { text-align: center; margin-bottom: 20px; }
.serp-logo img { max-height: 80px; width: auto; }

.serp-form-group { margin: 20px 0; }
.serp-captcha-wrap { margin: 15px 0; display: flex; justify-content: center; }
.serp-captcha-wrap .g-recaptcha { transform-origin: center top; }
.serp-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s ease;
    box-sizing: border-box;
}
.serp-input:focus {
    outline: none;
    border-color: var(--serp-primary, #1a73e8);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
}
.serp-input.error { border-color: #d63638; }

.serp-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    gap: 8px;
    box-sizing: border-box;
    max-width: 100%;
}
.serp-btn-primary {
    display: flex;
    background: var(--serp-primary, #1a73e8);
    color: #fff;
    width: 100%;
    margin-top: 15px;
}
.serp-btn-primary:hover { opacity: 0.9; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(26,115,232,0.3); }
.serp-btn-primary:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.serp-btn-secondary {
    display: flex;
    background: #fff;
    color: var(--serp-primary, #1a73e8);
    border: 2px solid var(--serp-primary, #1a73e8);
    width: 100%;
    margin-top: 10px;
}
.serp-btn-secondary:hover { background: rgba(26, 115, 232, 0.05); transform: translateY(-1px); }
.serp-btn-large { padding: 16px 40px; font-size: 18px; }
.serp-btn-link {
    background: none;
    color: var(--serp-primary, #1a73e8);
    padding: 8px 0;
    margin-top: 10px;
    font-weight: 500;
}
.serp-btn-link:hover { text-decoration: underline; }
.serp-btn:focus-visible,
.serp-input:focus-visible,
.serp-student-item:focus-visible,
.serp-lang-opt:focus-visible {
    outline: 3px solid var(--serp-primary, #1a73e8);
    outline-offset: 2px;
}

.serp-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.serp-thank-you-card { text-align: center; }
.serp-thank-you-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--serp-secondary, #34a853);
    color: #fff;
    font-size: 32px;
    line-height: 64px;
    margin: 0 auto 20px;
}
.serp-thank-you-message {
    color: #666;
    font-size: 15px;
    margin-bottom: 25px;
    line-height: 1.6;
}

.serp-student-item:focus {
    outline: none;
}
.serp-student-item[aria-selected="true"],
.serp-student-item.selected {
    border-color: var(--serp-primary, #1a73e8);
    background: rgba(26, 115, 232, 0.1);
}
.serp-student-list { margin: 20px 0; }
.serp-student-item {
    padding: 15px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    margin-bottom: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 16px;
    font-weight: 500;
    color: #1d2327;
}
.serp-student-item:hover {
    border-color: var(--serp-primary, #1a73e8);
    background: rgba(26, 115, 232, 0.05);
}

.serp-student-selected {
    background: #f8f9fa;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 15px;
}

.serp-section {
    margin-bottom: 25px;
    min-width: 0;
    max-width: 100%;
}
#serp-results-content {
    min-width: 0;
    max-width: 100%;
}
.serp-info-row {
    padding: 8px 0;
    border-bottom: 1px solid #f0f0f0;
    font-size: 15px;
}
.serp-info-row .serp-label { color: #666; font-weight: 500; }
.serp-info-row .serp-value  { font-weight: 600; color: #1d2327; margin-left: 8px; }

.serp-results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}
.serp-outcome-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 12px;
}
.serp-exam-type-row {
    margin-bottom: 12px;
}
.serp-exam-type-badge {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}
.serp-exam-type-badge.placement { background: #e6f4ea; color: #137333; }
.serp-exam-type-badge.final { background: #e8f0fe; color: #1a73e8; }
.serp-outcome-badge {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
}
.serp-outcome-badge.passed { background: #e6f4ea; color: #137333; }
.serp-outcome-badge.failed { background: #fce8e6; color: #c5221f; }
.serp-level-badge {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 8px;
    background: #e8f0fe;
    color: var(--serp-primary, #1a73e8);
    font-size: 14px;
    font-weight: 600;
}
.serp-result-item {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
}
.serp-result-label { display: block; font-size: 13px; color: #666; margin-bottom: 8px; font-weight: 500; }
.serp-result-score {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: var(--serp-primary, #1a73e8);
}
.serp-note-box {
    background: #fff8e1;
    border-left: 4px solid #ffc107;
    padding: 15px;
    border-radius: 4px;
    font-size: 14px;
    line-height: 1.6;
    color: #333;
}
.serp-registration-section {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    margin-top: 30px;
    width: 100%;
    max-width: 100%;
    min-width: 0;
}
.serp-portal .serp-registration-section > .serp-btn {
    display: flex;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    align-self: stretch;
    margin-left: 0;
    margin-right: 0;
}

.serp-share-section {
    margin-top: 24px;
    min-width: 0;
    max-width: 100%;
}
.serp-share-desc {
    color: #666;
    font-size: 13px;
    margin: 0 0 12px;
}
.serp-share-row {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: stretch;
    max-width: 100%;
    min-width: 0;
}
.serp-share-input {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    font-size: 13px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
#serp-copy-share-btn {
    width: 100%;
    max-width: 100%;
    white-space: nowrap;
}

.serp-message {
    margin-top: 15px;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    display: none;
}
.serp-message.success {
    display: block;
    background: #edfaef;
    color: #008a20;
    border: 1px solid #b5e5c0;
}
.serp-message.error {
    display: block;
    background: #fcf0f1;
    color: #d63638;
    border: 1px solid #f5c6cb;
}
.serp-rate-limit-info {
    background: #fff3cd;
    border: 1px solid #ffeeba;
    padding: 10px 15px;
    border-radius: 8px;
    font-size: 13px;
    color: #856404;
    margin-top: 10px;
}

.serp-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 20px;
}
.serp-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid #e0e0e0;
    border-top-color: var(--serp-primary, #1a73e8);
    border-radius: 50%;
    animation: serpSpin 0.8s linear infinite;
}
@keyframes serpSpin {
    to { transform: rotate(360deg); }
}
.serp-loading-text { color: #666; font-size: 14px; }

.serp-instruction { color: #666; font-size: 14px; margin-bottom: 20px; }

body.rtl .serp-input { text-align: right; }
body.rtl .serp-student-item { text-align: right; }
body.rtl .serp-result-item { text-align: center; }
body.rtl .serp-note-box { border-left: none; border-right: 4px solid #ffc107; }
body.rtl .serp-info-row .serp-value { margin-left: 0; margin-right: 8px; }

@media (max-width: 768px) {
    .serp-portal { margin: 15px; }
    .serp-card { padding: 25px 20px; }
    .serp-steps { overflow-x: auto; gap: 5px; }
    .serp-step-number { width: 32px; height: 32px; font-size: 13px; }
    .serp-step-label { font-size: 9px; }
    .serp-results-grid { grid-template-columns: 1fr; }
    .serp-card h2 { font-size: 20px; }
}
@media (max-width: 480px) {
    .serp-card { padding: 20px 15px; border-radius: 8px; }
    .serp-btn-large { padding: 14px 20px; font-size: 16px; }
    .serp-result-score { font-size: 24px; }
}