/* ============================================================
   aspect-ratio-calculator / style.css
   Prefix: arc-
   ============================================================ */

.arc-container {
    max-width: 1000px;
    margin: 0 auto;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* --- Section Cards --- */
.arc-section {
    background: #fdfdfd;
    padding: 22px 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.07);
    border: 1px solid #eee;
    margin-bottom: 20px;
}

.arc-section-title {
    display: block;
    font-size: 14px;
    font-weight: 700;
    color: #444;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid #007bff;
}

/* --- Input Groups --- */
.arc-input-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.arc-input-group label {
    font-size: 12px;
    font-weight: 600;
    color: #666;
    text-align: center;
}

.arc-input-group input[type="number"] {
    padding: 10px 8px;
    border: 1.5px solid #ccc;
    border-radius: 6px;
    font-size: 20px;
    font-weight: 700;
    text-align: center;
    color: #1a1a1a;
    width: 100%;
    box-sizing: border-box;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: #fff;
}

.arc-input-group input[type="number"]:focus {
    border-color: #007bff;
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.12);
}

/* Remove number spinners */
.arc-input-group input[type="number"]::-webkit-inner-spin-button,
.arc-input-group input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
}

.arc-input-group input[type="number"] {
    -moz-appearance: textfield;
}

/* --- Mode 1: px → ratio --- */
.arc-calc-row {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    flex-wrap: wrap;
}

.arc-calc-row .arc-input-group {
    flex: 1;
    min-width: 100px;
}

.arc-sym {
    font-size: 20px;
    font-weight: 700;
    color: #999;
    padding-bottom: 10px;
    flex-shrink: 0;
    align-self: flex-end;
}

.arc-result-ratio {
    display: flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #e8f0fe 0%, #deeeff 100%);
    border: 2px solid #007bff;
    padding: 10px 18px;
    border-radius: 10px;
    flex-shrink: 0;
    min-width: 120px;
    justify-content: center;
    transition: all 0.2s;
}

.arc-ratio-num {
    font-size: 28px;
    font-weight: 800;
    color: #007bff;
    line-height: 1;
}

.arc-ratio-colon {
    font-size: 24px;
    font-weight: 800;
    color: #005fcc;
}

.arc-approx-tag {
    display: inline-block;
    margin-top: 8px;
    font-size: 12px;
    color: #555;
    background: #f0f0f0;
    border-radius: 12px;
    padding: 3px 10px;
}

.arc-approx-tag span {
    font-weight: 700;
    color: #007bff;
}

/* --- Mode 2: ratio → px --- */
.arc-ratio-input-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}

.arc-ratio-input-row .arc-input-group {
    flex: 1;
    min-width: 80px;
}

.arc-ratio-colon-lg {
    font-size: 28px;
    font-weight: 800;
    color: #999;
    padding-bottom: 8px;
    flex-shrink: 0;
}

.arc-base-row {
    display: flex;
    gap: 14px;
    align-items: flex-end;
    flex-wrap: wrap;
    margin-bottom: 14px;
}

.arc-radio-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    padding-bottom: 2px;
}

.arc-radio-item {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 13px;
    color: #333;
    padding: 7px 14px;
    border: 1.5px solid #ccc;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s;
    background: #fff;
    font-weight: 600;
    white-space: nowrap;
}

.arc-radio-item:has(input:checked) {
    border-color: #007bff;
    background: #e8f0fe;
    color: #007bff;
}

.arc-radio-item input[type="radio"] {
    accent-color: #007bff;
}

.arc-base-row .arc-input-group {
    flex: 1;
    min-width: 120px;
}

.arc-pixel-result {
    background: linear-gradient(135deg, #e8f0fe 0%, #deeeff 100%);
    border: 2px solid #007bff;
    border-radius: 10px;
    padding: 14px 20px;
    text-align: center;
}

.arc-pixel-result .arc-result-value {
    font-size: 26px;
    font-weight: 800;
    color: #007bff;
    line-height: 1.2;
}

.arc-pixel-result .arc-result-sub {
    font-size: 12px;
    color: #666;
    margin-top: 4px;
}

/* --- Preset Section --- */
.arc-preset-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 14px;
    border-radius: 8px;
    overflow: hidden;
    border: 1.5px solid #007bff;
}

.arc-preset-tab {
    flex: 1;
    padding: 9px 8px;
    background: #fff;
    border: none;
    cursor: pointer;
    font-size: 13px;
    font-weight: 700;
    color: #007bff;
    transition: all 0.2s;
    border-right: 1px solid #007bff;
}

.arc-preset-tab:last-child {
    border-right: none;
}

.arc-preset-tab.active {
    background: #007bff;
    color: #fff;
}

.arc-preset-tab:hover:not(.active) {
    background: #e8f0fe;
}

.arc-preset-pane {
    display: none;
}

.arc-preset-pane.active {
    display: block;
}

.arc-presets-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.arc-preset-btn {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    padding: 10px 12px;
    border: 1.5px solid #e0e0e0;
    border-radius: 8px;
    background: #fff;
    cursor: pointer;
    transition: all 0.18s;
    text-align: left;
}

.arc-preset-btn:hover {
    border-color: #007bff;
    background: #f0f5ff;
}

.arc-preset-btn.active-preset {
    border-color: #007bff;
    background: #e8f0fe;
}

.arc-preset-name {
    font-size: 13px;
    font-weight: 700;
    color: #333;
}

.arc-preset-ratio {
    font-size: 11px;
    color: #007bff;
    font-weight: 600;
    font-family: "SFMono-Regular", Consolas, monospace;
}

.arc-preset-size {
    font-size: 11px;
    color: #888;
    font-family: "SFMono-Regular", Consolas, monospace;
}

/* --- Preview --- */
.arc-preview-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 16px 8px;
    min-height: 180px;
    position: relative;
}

.arc-preview-box {
    background: linear-gradient(135deg, #f0f5ff 0%, #e8f0fe 100%);
    border: 2.5px solid #007bff;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1),
        height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 16px rgba(0, 123, 255, 0.12);
    max-width: 100%;
}

.arc-preview-ratio-text {
    font-size: 20px;
    font-weight: 800;
    color: #007bff;
}

.arc-preview-px-text {
    font-size: 12px;
    color: #555;
    font-family: "SFMono-Regular", Consolas, monospace;
}

/* --- Size Table --- */
.arc-size-table-wrap {
    overflow-x: auto;
}

.arc-size-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.arc-size-table th {
    background: #f5f7ff;
    padding: 9px 10px;
    text-align: left;
    font-weight: 700;
    color: #444;
    border-bottom: 2px solid #dde;
    white-space: nowrap;
}

.arc-size-table td {
    padding: 9px 10px;
    border-bottom: 1px solid #f0f0f0;
    color: #333;
    vertical-align: middle;
}

.arc-size-table tr:hover td {
    background: #f8f8ff;
}

.arc-size-table .arc-copy-cell {
    text-align: right;
    white-space: nowrap;
}

.arc-copy-size-btn {
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 600;
    color: #007bff;
    border: 1px solid #007bff;
    border-radius: 4px;
    background: #fff;
    cursor: pointer;
    transition: all 0.15s;
}

.arc-copy-size-btn:hover {
    background: #007bff;
    color: #fff;
}

.arc-copy-size-btn.copied {
    background: #28a745;
    border-color: #28a745;
    color: #fff;
}

.arc-no-size-msg {
    color: #aaa;
    font-style: italic;
    text-align: center;
    padding: 20px 0;
    font-size: 13px;
}

.arc-px-mono {
    font-family: "SFMono-Regular", Consolas, monospace;
    font-weight: 600;
}

.arc-use-text {
    color: #888;
    font-size: 12px;
}

/* --- Responsive --- */
@media (max-width: 480px) {
    .arc-calc-row {
        gap: 6px;
    }

    .arc-ratio-num {
        font-size: 22px;
    }

    .arc-result-ratio {
        padding: 8px 12px;
        min-width: 100px;
    }

    .arc-presets-grid {
        grid-template-columns: 1fr;
    }

    .arc-pixel-result .arc-result-value {
        font-size: 20px;
    }
}