/* 三个页面共用：基础控件、卡片、导航、日志与响应式规则。 */

/* InkMoment Web 工具统一视觉主题。只负责呈现，不参与任何业务逻辑。 */
:root {
    --im-bg: #f3f7f7;
    --im-surface: #ffffff;
    --im-surface-soft: #f8fbfb;
    --im-line: #d8e4e2;
    --im-line-strong: #b9ceca;
    --im-text: #172c30;
    --im-muted: #607579;
    --im-primary: #0f766e;
    --im-primary-hover: #0b5f59;
    --im-primary-soft: #e6f3f1;
    --im-accent: #c26a18;
    --im-danger: #b84c4c;
    --im-shadow-small: 0 4px 14px rgba(28, 67, 70, .07);
    --im-radius: 8px;
}

* { box-sizing: border-box; }

html { min-width: 320px; background: var(--im-bg); }

body {
    min-height: 100vh;
    margin: 0;
    padding: 0;
    background: var(--im-bg);
    color: var(--im-text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 15px;
    line-height: 1.5;
}

button,
input,
select { font: inherit; }

button,
input[type="button"],
input[type="submit"],
a.button,
label.button {
    min-height: 38px;
    padding: 8px 14px;
    border: 1px solid var(--im-line-strong);
    border-radius: var(--im-radius);
    background: var(--im-surface);
    color: var(--im-text);
    font-size: 14px;
    font-weight: 600;
    line-height: 1.2;
    white-space: nowrap;
    cursor: pointer;
    transition: background-color .2s ease, border-color .2s ease, color .2s ease, box-shadow .2s ease;
}

button:hover:not(:disabled),
input[type="button"]:hover:not(:disabled),
input[type="submit"]:hover:not(:disabled),
a.button:hover,
label.button:hover {
    border-color: var(--im-primary);
    background: var(--im-primary-soft);
    color: var(--im-primary-hover);
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible,
label.button:focus-visible {
    outline: 3px solid rgba(15, 118, 110, .2);
    outline-offset: 2px;
}

button:disabled,
input[type="button"]:disabled,
input[type="submit"]:disabled {
    opacity: .48;
    cursor: not-allowed;
}

button.primary,
input.primary,
a.button.primary,
label.button.primary {
    border-color: var(--im-primary);
    background: var(--im-primary);
    color: #fff;
    box-shadow: 0 2px 5px rgba(15, 118, 110, .16);
}

button.primary:hover:not(:disabled),
input.primary:hover:not(:disabled),
a.button.primary:hover,
label.button.primary:hover {
    border-color: var(--im-primary-hover);
    background: var(--im-primary-hover);
    color: #fff;
}

button.secondary,
input.secondary,
a.button.secondary,
label.button.secondary {
    border-color: var(--im-line-strong);
    background: var(--im-surface);
    color: var(--im-muted);
}

button.secondary:hover:not(:disabled),
input.secondary:hover:not(:disabled),
a.button.secondary:hover,
label.button.secondary:hover {
    border-color: var(--im-primary);
    background: var(--im-primary-soft);
    color: var(--im-primary-hover);
}

button.danger,
input.danger {
    border-color: #e4bebe;
    background: #fff8f8;
    color: var(--im-danger);
    box-shadow: none;
}

button.danger:hover:not(:disabled),
input.danger:hover:not(:disabled) {
    border-color: var(--im-danger);
    background: #fff0f0;
    color: #9d3737;
}

.page-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px 24px;
    grid-column: 1 / -1;
}

.page-heading { min-width: 0; flex: 1 1 280px; }
.page-nav { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.page-nav .fw-upgrade-link {
    flex: 1 1 0;
    min-width: 132px;
    justify-content: center;
}
.connection-status {
    display: inline-flex;
    min-width: 0;
    min-height: 38px;
    align-items: center;
    gap: 7px;
    padding: 8px 10px;
    border: 1px solid var(--im-line);
    border-radius: 7px;
    background: var(--im-surface-soft);
    color: var(--im-primary-hover);
    font-size: 14px;
    font-weight: 700;
    line-height: 1.2;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.connection-status::before {
    width: 8px;
    height: 8px;
    flex: 0 0 8px;
    border-radius: 50%;
    background: var(--im-primary);
    content: "";
}
.connection-status[hidden] { display: none; }

.connection-device-status {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.firmware-version-status {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 4px;
    margin-left: 2px;
    padding-left: 8px;
    border-left: 1px solid var(--im-line-strong);
    color: var(--im-muted);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 12px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    line-height: 1.2;
    white-space: nowrap;
}
.firmware-version-status::before {
    color: var(--im-muted);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 11px;
    font-weight: 650;
    content: "版本";
}
.firmware-version-status[hidden] { display: none; }

.page-heading h3,
.page-heading h1,
body[data-tool="uart"] .page-heading h3,
body[data-tool="ota"] .page-heading h1 {
    margin: 0 0 8px;
    padding: 0;
    border: 0;
    color: var(--im-text);
    font-size: clamp(24px, 3vw, 32px);
    font-weight: 750;
    letter-spacing: 0;
    line-height: 1.2;
    text-align: left;
}

.page-heading h3::after,
.page-heading h1::after {
    display: block;
    width: 42px;
    height: 3px;
    margin-top: 12px;
    border-radius: 2px;
    background: var(--im-accent);
    content: "";
}

.tool-subtitle {
    margin: 0;
    color: var(--im-muted);
    font-size: 14px;
    line-height: 1.6;
}

fieldset {
    min-width: 0;
    margin: 0 0 16px;
    padding: 18px 20px 20px;
    border: 1px solid var(--im-line);
    border-radius: var(--im-radius);
    background: var(--im-surface);
    box-shadow: var(--im-shadow-small);
}

fieldset legend {
    padding: 0 8px;
    color: var(--im-text);
    font-size: 13px;
    font-weight: 750;
    letter-spacing: .04em;
}

.flex-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.flex-group {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}

label,
.flex-group > span:first-child {
    color: var(--im-muted);
    font-size: 13px;
    font-weight: 600;
}

input[type="text"],
input[type="number"],
input[type="file"],
input[type="time"],
select {
    min-height: 38px;
    padding: 7px 10px;
    border: 1px solid var(--im-line-strong);
    border-radius: 7px;
    background: var(--im-surface);
    color: var(--im-text);
    font-size: 14px;
}

input[type="file"] { max-width: 100%; padding: 5px; }
input[type="file"]::file-selector-button {
    margin-right: 8px;
    padding: 7px 10px;
    border: 0;
    border-radius: 5px;
    background: var(--im-primary-soft);
    color: var(--im-primary-hover);
    font: inherit;
    font-weight: 650;
    cursor: pointer;
}

input[type="number"] { width: 78px; }
input[type="time"] { min-height: 38px; }
input[type="range"] { accent-color: var(--im-primary); }
input[type="checkbox"] { width: 17px; height: 17px; accent-color: var(--im-primary); }

input:focus,
select:focus {
    border-color: var(--im-primary);
    box-shadow: 0 0 0 3px rgba(15, 118, 110, .12);
    outline: 0;
}

.log-container,
#log,
#slog {
    width: 100%;
    min-height: 104px;
    max-height: 250px;
    margin: 10px 0 0;
    padding: 12px;
    overflow-x: hidden;
    overflow-y: auto;
    border: 1px solid var(--im-line);
    border-radius: 7px;
    background: #f6faf9;
    color: #395257;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 12px;
    line-height: 1.55;
    word-break: break-word;
}

.status-bar,
#status,
#swrite {
    min-height: 28px;
    margin: 8px 0;
    padding: 7px 10px;
    border: 1px solid var(--im-line);
    border-radius: 6px;
    background: var(--im-surface-soft);
    color: var(--im-muted);
    font-size: 13px;
}

.tool-button.active { box-shadow: inset 0 0 0 1px var(--im-primary); }

.fw-upgrade-link {
    display: inline-flex;
    min-height: 38px;
    align-items: center;
    margin: 0;
    padding: 8px 14px;
    border: 1px solid var(--im-line-strong);
    border-radius: 7px;
    background: var(--im-surface);
    color: var(--im-primary-hover);
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
}
.fw-upgrade-link[hidden] { display: none !important; }

.fw-upgrade-link:hover {
    border-color: var(--im-primary);
    background: var(--im-primary-soft);
    color: var(--im-primary-hover);
}

.modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    padding: 20px;
}

.modal { background: rgba(23, 44, 48, .48); }
.modal[hidden],
#grayShadowControls[hidden] { display: none !important; }
.modal-content,
body[data-tool="ota"] .modal__dialog {
    border: 1px solid var(--im-line);
    border-radius: var(--im-radius);
    background: var(--im-surface);
    box-shadow: 0 20px 50px rgba(23, 44, 48, .2);
}
.app-notice-content {
    box-sizing: border-box;
    width: min(100%, 440px);
    padding: 22px;
    border: 1px solid var(--im-line);
    border-radius: var(--im-radius);
    background: var(--im-surface);
    box-shadow: 0 20px 50px rgba(23, 44, 48, .2);
}
.app-notice-title { margin: 0 0 12px; color: var(--im-text); font-size: 18px; }
.app-notice-message {
    margin: 0;
    color: var(--im-muted);
    line-height: 1.55;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}
.app-notice-actions { margin-top: 18px; text-align: right; }

@media (max-width: 1080px) {
    .main,
    body[data-tool="ota"] main,
    body[data-tool="uart"] .uart-shell {
        grid-template-columns: 1fr;
        grid-template-rows: none;
    }
    .main > .connection-card,
    .main > .control-card,
    .main > .image-card { grid-column: 1; grid-row: auto; }
    body[data-tool="ota"] .ota-control-card,
    body[data-tool="ota"] .ota-log-card { grid-column: 1; grid-row: auto; }
    .image-settings { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 700px) {
    .main,
    body[data-tool="ota"] main,
    body[data-tool="uart"] {
        display: block;
        width: min(100% - 24px, 1280px);
        padding-top: 20px;
    }

    fieldset { padding: 16px; }
    .main > fieldset,
    body[data-tool="ota"] main > fieldset { margin-bottom: 16px; }
    .main > fieldset:last-child,
    body[data-tool="ota"] main > fieldset:last-of-type { margin-bottom: 0; }
    .main > .page-header,
    body[data-tool="ota"] main > .page-header { margin-bottom: 16px; }
    .page-header { align-items: flex-start; }
    .page-nav { width: 100%; }
    .page-nav .connection-status {
        flex: 1 0 100%;
        justify-content: flex-start;
    }
    .page-nav .fw-upgrade-link {
        flex: 1 1 0;
        min-width: 0;
        justify-content: center;
    }
    .image-settings { display: flex; flex-wrap: wrap; }
    .image-card .canvas-container { min-height: 0; }
    .flex-container { align-items: stretch; }
    .flex-group { width: 100%; }
    .control-card .time-actions .flex-group { flex-wrap: wrap; }
    .control-card #btnApplyOffset,
    .control-card #btnSelectDate {
        flex: 1 1 108px;
        width: auto;
    }
    .control-card #btnSelectDate { margin-left: 0; }
    .flex-group > button,
    .flex-group > a,
    .flex-group > input[type="button"],
    .flex-group > input[type="submit"] { flex: 1 1 auto; }
    .canvas-container { padding: 12px; }
    body[data-tool="ota"] .action-row { grid-template-columns: 1fr; }
    body[data-tool="uart"] .uart-shell { grid-template-columns: 1fr; }
    body[data-tool="uart"] .uart-card { padding: 16px; }
    body[data-tool="uart"] .uart-fields { grid-template-columns: 1fr; }
    body[data-tool="uart"] .uart-write-row #butWrite,
    body[data-tool="uart"] .uart-connect-row #butOpen { width: 100%; }
    body[data-tool="ota"] .page-header,
    body[data-tool="ota"] fieldset { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        scroll-behavior: auto !important;
        transition-duration: .01ms !important;
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
    }
}