:root {
    --bg-top: #f6f1e7;
    --bg-bottom: #d9e6ea;
    --panel: rgba(255, 255, 255, 0.9);
    --panel-border: rgba(23, 44, 52, 0.08);
    --text-main: #142329;
    --text-soft: #5b6c73;
    --brand: #0d7c86;
    --brand-deep: #074f57;
    --success-bg: #e4f7ea;
    --success-text: #125b2c;
    --warning-bg: #fff1d6;
    --warning-text: #8a5b00;
    --muted-bg: #edf1f3;
    --muted-text: #4f6271;
    --green: #1f8f52;
    --yellow: #d4a11d;
    --orange: #dd6a1f;
    --shadow: 0 22px 55px rgba(14, 36, 44, 0.14);
    --radius-xl: 28px;
    --radius-lg: 18px;
    --radius-md: 14px;
}

* {
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Trebuchet MS", "Segoe UI", sans-serif;
    color: var(--text-main);
    background:
        radial-gradient(circle at top left, rgba(13, 124, 134, 0.16), transparent 34%),
        radial-gradient(circle at bottom right, rgba(221, 106, 31, 0.18), transparent 24%),
        linear-gradient(180deg, var(--bg-top) 0%, var(--bg-bottom) 100%);
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.15) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.15) 1px, transparent 1px);
    background-size: 26px 26px;
    opacity: 0.22;
    pointer-events: none;
}

.page-shell {
    position: relative;
    z-index: 1;
    width: min(100%, 980px);
    margin: 0 auto;
    padding: 24px 14px 36px;
}

.certificate-card {
    position: relative;
    overflow: hidden;
    padding: 24px;
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-xl);
    background: var(--panel);
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
}

.certificate-card--empty {
    max-width: 760px;
    margin: 0 auto;
}

.card-orbit {
    position: absolute;
    top: -110px;
    right: -90px;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background:
        radial-gradient(circle at center, rgba(13, 124, 134, 0.18), rgba(13, 124, 134, 0));
    pointer-events: none;
}

.certificate-header {
    position: relative;
    margin-bottom: 22px;
}

.eyebrow {
    margin: 0 0 10px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--brand-deep);
}

.certificate-header h1 {
    margin: 0;
    font-size: clamp(1.85rem, 6vw, 3.3rem);
    line-height: 1.05;
}

.intro {
    max-width: 42rem;
    margin: 14px 0 0;
    color: var(--text-soft);
    font-size: 0.98rem;
    line-height: 1.65;
}

.status-strip,
.notice {
    display: grid;
    gap: 12px;
    margin-bottom: 18px;
    padding: 16px;
    border-radius: var(--radius-lg);
}

.status-strip--success {
    background: var(--success-bg);
    color: var(--success-text);
}

.status-strip--warning {
    background: var(--warning-bg);
    color: var(--warning-text);
}

.status-strip--muted,
.notice--error {
    background: var(--muted-bg);
    color: var(--muted-text);
}

.notice--success {
    background: var(--success-bg);
    color: var(--success-text);
}

.notice--install {
    background: rgba(13, 124, 134, 0.1);
    color: var(--brand-deep);
}

.notice--warning {
    background: var(--warning-bg);
    color: var(--warning-text);
}

.status-kicker,
.notice-label,
.identity-label {
    margin: 0 0 6px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.status-title,
.notice-message {
    margin: 0;
    font-size: 1rem;
    line-height: 1.5;
}

.install-actions {
    display: grid;
    gap: 10px;
}

.install-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    width: auto;
    padding: 0.8rem 1rem;
    border: 0;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-deep) 100%);
    color: #fff;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
}

.install-hint {
    margin: 0;
    line-height: 1.5;
}

.status-copy {
    margin: 0;
    max-width: 34rem;
    line-height: 1.55;
}

.identity-panel {
    display: grid;
    gap: 18px;
    padding: 18px;
    margin-bottom: 18px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(13, 124, 134, 0.08);
}

.identity-panel h2 {
    margin: 0;
    font-size: clamp(1.4rem, 5vw, 2.2rem);
    line-height: 1.15;
}

.badge-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 0.65rem 0.95rem;
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.01em;
}

.badge-level {
    background: rgba(13, 124, 134, 0.12);
    color: var(--brand-deep);
}

.badge-practice--green {
    background: rgba(31, 143, 82, 0.12);
    color: var(--green);
}

.badge-practice--yellow {
    background: rgba(212, 161, 29, 0.16);
    color: #8c6a09;
}

.badge-practice--orange {
    background: rgba(221, 106, 31, 0.14);
    color: var(--orange);
}

.detail-grid {
    display: grid;
    gap: 12px;
    margin: 0;
}

.detail-item {
    padding: 16px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.68);
    border: 1px solid rgba(20, 35, 41, 0.08);
}

.detail-item dt {
    margin-bottom: 8px;
    color: var(--text-soft);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.detail-item dd {
    margin: 0;
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.5;
}

.signal-hub {
    margin-top: 24px;
    padding: 22px 18px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.64);
    border: 1px solid rgba(20, 35, 41, 0.08);
}

.signal-hub__intro {
    margin-bottom: 18px;
}

.signal-hub__intro h3 {
    margin: 0 0 8px;
    font-size: clamp(1.2rem, 4vw, 1.7rem);
}

.signal-hub__intro p {
    margin: 0;
    color: var(--text-soft);
    line-height: 1.6;
}

.feedback-grid {
    display: grid;
    gap: 16px;
}

.signal-form {
    display: grid;
    gap: 16px;
    padding: 18px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid rgba(20, 35, 41, 0.08);
}

.signal-form--good {
    border-color: rgba(31, 143, 82, 0.18);
    box-shadow: inset 0 0 0 1px rgba(31, 143, 82, 0.05);
}

.signal-form--alert {
    border-color: rgba(221, 106, 31, 0.2);
    box-shadow: inset 0 0 0 1px rgba(221, 106, 31, 0.06);
}

body.is-offline .signal-form {
    opacity: 0.76;
}

body.is-offline .signal-form .submit-button,
body.is-offline .signal-form .file-input,
body.is-offline .signal-form .option-card {
    cursor: not-allowed;
}

.signal-form__header h4 {
    margin: 0 0 8px;
    font-size: 1.2rem;
}

.signal-form__header p {
    margin: 0;
    color: var(--text-soft);
    line-height: 1.6;
}

.form-alert {
    padding: 14px;
    border-radius: var(--radius-md);
}

.form-alert--error {
    background: #fff3ef;
    color: #8c3411;
}

.form-alert__title {
    margin: 0 0 8px;
    font-weight: 700;
}

.form-alert__list {
    margin: 0;
    padding-left: 18px;
}

.option-fieldset {
    margin: 0;
    padding: 0;
    border: 0;
}

.option-fieldset legend {
    margin-bottom: 10px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-soft);
}

.option-list {
    display: grid;
    gap: 10px;
}

.option-card {
    display: grid;
    grid-template-columns: 22px minmax(0, 1fr);
    gap: 12px;
    align-items: start;
    padding: 14px;
    border-radius: var(--radius-md);
    background: rgba(20, 35, 41, 0.03);
    border: 1px solid rgba(20, 35, 41, 0.08);
    cursor: pointer;
}

.option-card input {
    width: 18px;
    height: 18px;
    margin: 2px 0 0;
    accent-color: var(--brand);
}

.option-card span {
    line-height: 1.45;
    font-weight: 700;
}

.upload-block label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.95rem;
    font-weight: 700;
}

.file-input {
    width: 100%;
    padding: 12px;
    border: 1px dashed rgba(20, 35, 41, 0.18);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.75);
}

.field-note,
.anonymous-note {
    margin: 8px 0 0;
    color: var(--text-soft);
    font-size: 0.9rem;
    line-height: 1.5;
}

.form-meta {
    display: grid;
    gap: 14px;
}

.submit-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0.85rem 1.1rem;
    border: 0;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-deep) 100%);
    color: #fff;
    font-size: 0.98rem;
    font-weight: 700;
    cursor: pointer;
}

.submit-button:hover {
    filter: brightness(1.03);
}

.submit-button:focus-visible,
.file-input:focus-visible,
.option-card input:focus-visible {
    outline: 3px solid rgba(13, 124, 134, 0.2);
    outline-offset: 2px;
}

.certificate-footer {
    margin-top: 22px;
    padding-top: 18px;
    border-top: 1px solid rgba(20, 35, 41, 0.08);
    color: var(--text-soft);
    font-size: 0.95rem;
}

.certificate-footer p {
    margin: 0 0 8px;
}

.certificate-footer code {
    display: inline-block;
    padding: 10px 12px;
    border-radius: 10px;
    background: rgba(20, 35, 41, 0.06);
    color: var(--text-main);
    word-break: break-word;
}

@media (min-width: 640px) {
    .page-shell {
        padding: 40px 20px 60px;
    }

    .certificate-card {
        padding: 34px;
    }

    .detail-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .status-strip {
        grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
        align-items: center;
    }

    .feedback-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 860px) {
    .certificate-card {
        padding: 40px;
    }

    .identity-panel {
        grid-template-columns: minmax(0, 1fr) auto;
        align-items: end;
    }
}