/* EzieTools Timestamp Converter — time.ezietools.com */

:root {
    --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

    --background: #f4f5f7;
    --surface: #ffffff;
    --text: #181b20;
    --muted: #667085;
    --border: #dde1e7;
    --accent: #2f6fed;
    --accent-soft: #e8effd;
    --success: #15803d;
    --danger: #b42318;
    --danger-bg: #fdecea;
    --notice: #92400e;
    --notice-bg: #fef3c7;
    --shadow: 0 10px 30px rgba(16, 24, 40, 0.10);
    --radius: 10px;

    color-scheme: light;
}

:root[data-theme="dark"] {
    --background: #0e1116;
    --surface: #161a21;
    --text: #e8eaee;
    --muted: #98a1ad;
    --border: #272d37;
    --accent: #7aa2ff;
    --accent-soft: #1c2740;
    --success: #4ade80;
    --danger: #f87171;
    --danger-bg: #3a1d1b;
    --notice: #fbbf24;
    --notice-bg: #3a2d10;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.45);

    color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
    :root[data-theme="system"] {
        --background: #0e1116;
        --surface: #161a21;
        --text: #e8eaee;
        --muted: #98a1ad;
        --border: #272d37;
        --accent: #7aa2ff;
        --accent-soft: #1c2740;
        --success: #4ade80;
        --danger: #f87171;
        --danger-bg: #3a1d1b;
        --notice: #fbbf24;
        --notice-bg: #3a2d10;
        --shadow: 0 10px 30px rgba(0, 0, 0, 0.45);

        color-scheme: dark;
    }
}

* {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
}

html,
body {
    max-width: 100%;
    overflow-x: hidden;
}

body {
    margin: 0;
    font: 15px/1.55 var(--sans);
    background: var(--background);
    color: var(--text);
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}

[hidden] {
    display: none !important;
}

a {
    color: var(--accent);
}

.skip-link {
    position: absolute;
    left: -999px;
    top: 0;
    z-index: 100;
    background: var(--accent);
    color: #fff;
    padding: 8px 14px;
    border-radius: 0 0 8px 0;
    text-decoration: none;
}

.skip-link:focus {
    left: 0;
}

/* ---------- header / footer ---------- */

.site-header {
    max-width: 1080px;
    margin: 0 auto;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.brand {
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -0.01em;
}

.brand:hover {
    color: var(--accent);
}

.page {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 20px 32px;
}

.site-footer {
    max-width: 1080px;
    margin: 0 auto;
    padding: 6px 20px 34px;
    color: var(--muted);
    font-size: 0.82rem;
    display: flex;
    gap: 8px;
    align-items: center;
}

.site-footer a {
    color: var(--muted);
    text-decoration: none;
}

.site-footer a:hover {
    color: var(--accent);
}

/* ---------- intro ---------- */

.intro {
    padding: 18px 0 4px;
}

.intro h1 {
    margin: 0;
    font-size: clamp(1.45rem, 1.1rem + 1.6vw, 2rem);
    letter-spacing: -0.02em;
}

.tagline {
    margin: 0.35rem 0 0;
    color: var(--muted);
}

/* ---------- cards / layout ---------- */

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    margin-top: 20px;
}

.card h2 {
    margin: 0 0 14px;
    font-size: 1.02rem;
    letter-spacing: -0.01em;
}

.section-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 6px;
}

.section-head h2 {
    margin: 0;
}

.tools {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 900px) {
    .tools {
        grid-template-columns: 1fr 1fr;
    }

    .tools > .card {
        margin-top: 20px;
    }
}

/* ---------- fields ---------- */

.field {
    margin: 0 0 14px;
    min-width: 0;
}

.field > label,
.field > .label {
    display: block;
    margin: 0 0 6px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--muted);
}

.field-pair {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

@media (max-width: 420px) {
    .field-pair {
        grid-template-columns: 1fr;
    }
}

input[type="text"],
input[type="date"],
input[type="time"],
select {
    width: 100%;
    padding: 8px 10px;
    font: inherit;
    font-size: 0.95rem;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
}

input[type="text"],
input[type="date"],
input[type="time"],
.mono-input,
#compare-zone-select {
    font-family: var(--mono);
}

input:hover,
select:hover {
    border-color: var(--muted);
}

.hint {
    margin: 6px 0 0;
    font-size: 0.8rem;
    color: var(--muted);
}

.error {
    margin: 8px 0 0;
    padding: 8px 10px;
    font-size: 0.85rem;
    color: var(--danger);
    background: var(--danger-bg);
    border-radius: 8px;
}

.notice {
    margin: 12px 0 0;
    padding: 10px 12px;
    font-size: 0.85rem;
    color: var(--notice);
    background: var(--notice-bg);
    border-radius: 8px;
}

/* ---------- segmented control ---------- */

.segmented {
    display: inline-flex;
    flex-wrap: wrap;
    padding: 2px;
    gap: 2px;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 9px;
}

.segmented button {
    appearance: none;
    border: 0;
    background: transparent;
    color: var(--muted);
    font: inherit;
    font-size: 0.85rem;
    padding: 5px 12px;
    border-radius: 7px;
    cursor: pointer;
}

.segmented button:hover {
    color: var(--text);
}

.segmented button[aria-pressed="true"] {
    background: var(--surface);
    color: var(--text);
    font-weight: 600;
    box-shadow: 0 1px 2px rgba(16, 24, 40, 0.12);
}

/* ---------- buttons ---------- */

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 16px 0 2px;
}

.btn {
    appearance: none;
    font: inherit;
    font-size: 0.85rem;
    padding: 7px 14px;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.btn:hover {
    border-color: var(--muted);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn.copy-btn {
    padding: 4px 10px;
    font-size: 0.78rem;
}

.btn.copy-btn.copied {
    color: var(--success);
    border-color: var(--success);
}

.icon-btn {
    appearance: none;
    border: 0;
    background: transparent;
    color: var(--muted);
    font-size: 1.05rem;
    line-height: 1;
    padding: 4px 8px;
    border-radius: 6px;
    cursor: pointer;
}

.icon-btn:hover {
    color: var(--danger);
    background: var(--danger-bg);
}

/* ---------- current timestamp ---------- */

.current-row {
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 0;
}

.current-row + .current-row {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px dashed var(--border);
}

.current-value {
    flex: 1;
    min-width: 0;
    font-size: 1.9rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    overflow-wrap: anywhere;
}

.current-label {
    font-size: 0.8rem;
    color: var(--muted);
    min-width: 92px;
}

/* ---------- result rows ---------- */

.results {
    margin-top: 14px;
}

.result-row {
    display: grid;
    grid-template-columns: minmax(92px, 150px) minmax(0, 1fr) auto;
    grid-template-areas: "label value copy";
    gap: 6px 10px;
    align-items: center;
    padding: 7px 0;
    border-top: 1px solid var(--border);
}

.result-label {
    grid-area: label;
}

.result-value {
    grid-area: value;
}

.result-row .copy-btn {
    grid-area: copy;
}

@media (max-width: 640px) {
    .result-row {
        grid-template-columns: minmax(0, 1fr) auto;
        grid-template-areas:
            "label label"
            "value copy";
        align-items: start;
    }
}

.result-row:first-child {
    border-top: 0;
}

.result-label {
    font-size: 0.78rem;
    color: var(--muted);
    overflow-wrap: anywhere;
}

.result-value {
    font-family: var(--mono);
    font-size: 0.88rem;
    overflow-wrap: anywhere;
}

/* ---------- details ---------- */

.details {
    margin-top: 14px;
    border-top: 1px solid var(--border);
    padding-top: 10px;
}

.details summary {
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--muted);
    user-select: none;
}

.details summary:hover {
    color: var(--text);
}

.details-body {
    margin-top: 6px;
}

/* ---------- zone picker ---------- */

.zone-picker {
    position: relative;
}

.zone-picker input {
    width: 100%;
}

.zone-list {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    z-index: 40;
    max-height: 250px;
    overflow: auto;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 4px;
}

.zone-list [role="option"] {
    padding: 6px 10px;
    font-size: 0.85rem;
    font-family: var(--mono);
    border-radius: 6px;
    cursor: pointer;
}

.zone-list [role="option"].active {
    background: var(--accent-soft);
    color: var(--text);
}

/* ---------- compare timezones ---------- */

.compare-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto auto auto;
    grid-template-areas: "zone date time off del";
    gap: 4px 14px;
    align-items: center;
    padding: 9px 0;
    border-top: 1px solid var(--border);
}

.compare-row:first-child {
    border-top: 0;
}

.compare-zone {
    grid-area: zone;
    font-weight: 600;
    font-size: 0.9rem;
    overflow-wrap: anywhere;
}

.compare-date {
    grid-area: date;
}

.compare-time {
    grid-area: time;
    font-weight: 600;
}

.compare-date,
.compare-time {
    font-family: var(--mono);
    font-size: 0.88rem;
}

.compare-offset {
    grid-area: off;
    color: var(--muted);
    font-size: 0.78rem;
    font-family: var(--mono);
}

.compare-del {
    grid-area: del;
}

.compare-add {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
}

.compare-add label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--muted);
    white-space: nowrap;
}

.compare-add select {
    flex: 1;
    min-width: 0;
}

@media (max-width: 640px) {
    .compare-row {
        grid-template-columns: minmax(0, 1fr) auto;
        grid-template-areas:
            "zone del"
            "date time"
            "off off";
        row-gap: 2px;
    }

    .compare-add {
        flex-wrap: wrap;
    }
}

/* ---------- clipboard fallback helper ---------- */

.clipboard-fallback {
    position: fixed;
    left: -9999px;
    top: 0;
}

/* ---------- motion ---------- */

@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
        scroll-behavior: auto !important;
    }
}