* {
    box-sizing: border-box;
}

@font-face {
    font-family: "Noto Sans";
    src: url("fonts/NotoSans.ttf") format("truetype");
    font-weight: 100 900;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Source Sans 3";
    src: url("fonts/SourceSans3.ttf") format("truetype");
    font-weight: 200 900;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "IBM Plex Sans";
    src: url("fonts/IBMPlexSans.ttf") format("truetype");
    font-weight: 100 700;
    font-style: normal;
    font-display: swap;
}

html, body {
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: #28241f;
    margin: 0;
}

.loading-progress {
    position: absolute;
    display: block;
    width: 8rem;
    height: 8rem;
    inset: 20vh 0 auto 0;
    margin: 0 auto;
}

.loading-progress circle {
    fill: none;
    stroke: #d7d0c5;
    stroke-width: 0.6rem;
    transform: rotate(-90deg);
    transform-origin: 50% 50%;
}

.loading-progress circle:last-child {
    stroke: #1f6f62;
    stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
    transition: stroke-dasharray 0.05s ease-in-out;
}

.loading-progress-text {
    position: absolute;
    inset: calc(20vh + 3.25rem) 0 auto 0.2rem;
    color: #4c4740;
    font-weight: 700;
    text-align: center;
}

.loading-progress-text::after {
    content: var(--blazor-load-percentage-text, "Loading");
}

#blazor-error-ui {
    color-scheme: light only;
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    z-index: 1000;
    width: 100%;
    padding: 0.6rem 1.25rem 0.7rem;
    color: #4b3520;
    background: #fff6c2;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
}

#blazor-error-ui .dismiss {
    position: absolute;
    top: 0.5rem;
    right: 0.75rem;
    cursor: pointer;
}

button,
input,
select,
textarea {
    font: inherit;
}

button {
    cursor: pointer;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.62;
}

.generator-shell {
    max-width: 1180px;
    margin: 0 auto;
}

.generator-heading {
    margin-bottom: 1.25rem;
}

.generator-heading h1 {
    margin: 0;
    font-size: clamp(1.75rem, 2.6vw, 2.65rem);
    line-height: 1.05;
    color: #231f1b;
}

.generator-heading p {
    margin: 0.55rem 0 0;
    color: #665f56;
}

.generator-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
    gap: 1.25rem;
    align-items: start;
}

.tool-panel,
.preview-panel {
    background: #fffdf9;
    border: 1px solid #ded6ca;
    border-radius: 8px;
    box-shadow: 0 16px 42px rgba(43, 34, 24, 0.08);
}

.tool-panel {
    padding: 1.25rem;
}

.preview-panel {
    padding: 1.25rem;
}

.form-section {
    display: grid;
    gap: 1rem;
}

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

.field-label {
    display: block;
    margin-bottom: 0.35rem;
    font-size: 0.82rem;
    font-weight: 700;
    color: #4c4740;
}

.field-note {
    margin-top: 0.35rem;
    color: #776f65;
    font-size: 0.86rem;
}

.control-input {
    display: block;
    width: 100%;
    min-height: 2.55rem;
    padding: 0.55rem 0.7rem;
    color: #28241f;
    background: #fffefa;
    border: 1px solid #cfc4b5;
    border-radius: 6px;
}

.control-input:disabled {
    color: #7f786f;
    background: #eee8df;
}

.control-input:focus,
.segmented-control button:focus-visible,
.button-primary:focus-visible {
    outline: 2px solid #1f6f62;
    outline-offset: 2px;
}

.size-fields {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(140px, 0.7fr);
    gap: 0.75rem;
}

.segmented-control {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.35rem;
    padding: 0.35rem;
    background: #eee8de;
    border: 1px solid #ded6ca;
    border-radius: 8px;
}

.segmented-control button {
    min-height: 2.45rem;
    border: 0;
    border-radius: 6px;
    background: transparent;
    color: #514b43;
    font-weight: 700;
}

.segmented-control button.active {
    background: #fffdf9;
    color: #1f6f62;
    box-shadow: 0 1px 5px rgba(43, 34, 24, 0.14);
}

.address-textarea {
    min-height: 10rem;
    resize: vertical;
}

.return-address-textarea {
    min-height: 7rem;
    resize: vertical;
}

.error-message {
    padding: 0.75rem 0.85rem;
    color: #7c1f1f;
    background: #fff0ef;
    border: 1px solid #e4b4ae;
    border-radius: 6px;
}

.actions-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    margin-top: 0.2rem;
}

.download-button {
    min-height: 2.75rem;
    padding-inline: 1.1rem;
    font-weight: 700;
}

.button-primary {
    color: #fff;
    background: #1f6f62;
    border: 1px solid #1f6f62;
    border-radius: 6px;
}

.button-primary:hover:not(:disabled) {
    background: #195d53;
    border-color: #195d53;
}

.status-text {
    min-height: 1.5rem;
    margin: 0;
    color: #3a625a;
    font-size: 0.92rem;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: baseline;
    margin-bottom: 1rem;
}

.preview-header h2 {
    margin: 0;
    font-size: 1.05rem;
}

.preview-meta {
    color: #665f56;
    font-size: 0.88rem;
}

.envelope-stage {
    display: grid;
    place-items: center;
    min-height: 420px;
    padding: 1rem;
    background:
        linear-gradient(90deg, rgba(31, 111, 98, 0.08) 1px, transparent 1px),
        linear-gradient(0deg, rgba(31, 111, 98, 0.08) 1px, transparent 1px),
        #e9e2d7;
    background-size: 22px 22px;
    border-radius: 8px;
}

.envelope-preview {
    position: relative;
    width: min(100%, 660px);
    --address-preview-font-size: clamp(0.72rem, 1.4vw, 1.05rem);
    background: #fffaf2;
    border: 1px solid #cdbfada;
    box-shadow: 0 18px 35px rgba(55, 43, 31, 0.17);
    overflow: hidden;
}

.envelope-preview::before,
.envelope-preview::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.envelope-preview::before {
    background:
        linear-gradient(150deg, transparent 49.8%, rgba(137, 116, 91, 0.22) 50%, transparent 50.2%),
        linear-gradient(30deg, transparent 49.8%, rgba(137, 116, 91, 0.2) 50%, transparent 50.2%);
}

.envelope-preview::after {
    border: 10px solid rgba(255, 255, 255, 0.38);
}

.address-preview {
    position: absolute;
    left: 48%;
    top: 52%;
    transform: translateY(-50%);
    max-width: 44%;
    color: #15120f;
    font-size: var(--address-preview-font-size);
    line-height: 1.35;
    overflow-wrap: anywhere;
}

.return-address-preview {
    position: absolute;
    left: 8%;
    top: 8%;
    max-width: 42%;
    color: #15120f;
    font-size: calc(var(--address-preview-font-size) * 0.666667);
    line-height: 1.35;
    overflow-wrap: anywhere;
}

.address-preview p,
.return-address-preview p {
    margin: 0;
}

@media (max-width: 980px) {
    .generator-grid {
        grid-template-columns: 1fr;
    }

    .envelope-stage {
        min-height: 320px;
    }
}

@media (max-width: 560px) {
    .page {
        padding: 1rem;
    }

    .size-fields {
        grid-template-columns: 1fr;
    }

    .preview-header {
        display: block;
    }
}

h1:focus {
    outline: none;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid #e50000;
}

.validation-message {
    color: #e50000;
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.darker-border-checkbox.form-check-input {
    border-color: #929292;
}