/* 타이머 도구 — 아이잘한다 모던 심플 톤 (PDF·이미지 도구와 동일 토큰) */

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-soft: #dbeafe;
    --color-secondary: #16a34a;
    --color-secondary-soft: #dcfce7;
    --color-canvas: #ffffff;
    --color-surface: #f8fafc;
    --color-surface-soft: #f1f5f9;
    --color-text: #0f172a;
    --color-text-muted: #64748b;
    --color-hairline: #e2e8f0;
    --color-danger: #dc2626;
    --color-warn: #f59e0b;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-pill: 999px;
    --elevation-1: 0 1px 2px rgba(15,23,42,0.06), 0 1px 3px rgba(15,23,42,0.04);
    --elevation-2: 0 4px 12px rgba(15,23,42,0.08), 0 2px 4px rgba(15,23,42,0.05);
    --font-main: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

html, body { height: 100%; }
body {
    font-family: var(--font-main);
    background: var(--color-surface);
    color: var(--color-text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    /* 카드 그리드를 viewport에 맞춰 분할하기 위해 flex column */
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* ── Header ── */
.util-header {
    background: var(--color-canvas);
    border-bottom: 1px solid var(--color-hairline);
    position: sticky;
    top: 0;
    z-index: 10;
}
.util-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
}
.util-title { margin: 0; font-size: 1.05rem; font-weight: 700; }
.back-link, .home-link {
    color: var(--color-text-muted);
    text-decoration: none;
    width: 36px; height: 36px;
    border-radius: var(--radius-pill);
    display: inline-flex; align-items: center; justify-content: center;
    transition: background 0.15s, color 0.15s;
}
.back-link:hover, .home-link:hover {
    background: var(--color-surface-soft);
    color: var(--color-text);
}

.util-main {
    padding-top: 1rem;
    padding-bottom: 1rem;
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

/* ── 모드 탭 (PDF·이미지 도구와 동일 패턴) ── */
.tabs {
    display: flex;
    gap: 0.25rem;
    background: var(--color-canvas);
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-md);
    padding: 0.25rem;
    margin-bottom: 1rem;
    overflow-x: auto;
    scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tab {
    flex: 1 1 0;
    min-width: max-content;
    padding: 0.65rem 0.875rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-muted);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.15s, color 0.15s;
    font-family: var(--font-main);
}
.tab:hover { color: var(--color-text); }
.tab.active {
    background: var(--color-primary);
    color: white;
}

/* ── 컨트롤 바 ── */
.controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}
.controls-spacer { flex: 1; }

.split-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    background: var(--color-canvas);
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-md);
    padding: 0.3rem;
}
.split-label {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--color-text-muted);
    padding: 0 0.5rem 0 0.625rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}
.split-btn {
    width: 32px; height: 32px;
    font-family: var(--font-main);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-text-muted);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}
.split-btn:hover { background: var(--color-surface-soft); color: var(--color-text); }
.split-btn[aria-pressed="true"] {
    background: var(--color-primary);
    color: white;
}

.bulk-actions {
    display: flex;
    gap: 0.375rem;
}
.bulk-actions[hidden] { display: none; }

.ctrl-btn {
    width: 40px; height: 40px;
    background: var(--color-canvas);
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 1.1rem;
    line-height: 1;
    color: var(--color-text);
}
.ctrl-btn:hover { background: var(--color-surface-soft); }
.mute-off { display: none; }
.mute-btn.muted .mute-on { display: none; }
.mute-btn.muted .mute-off { display: inline; }

/* ── 카드 그리드 (남는 세로 공간을 다 차지하고, 행은 균등 분할) ── */
.card-grid {
    display: grid;
    gap: 0.75rem;
    width: 100%;
    flex: 1;
    min-height: 0;
    grid-auto-rows: 1fr;
}
/* 분할 매핑: 1·2·3·5·6은 1·2·3열, 4는 2×2, 7·8은 4열 */
.card-grid[data-split="1"] { grid-template-columns: 1fr; }
.card-grid[data-split="2"] { grid-template-columns: repeat(2, 1fr); }
.card-grid[data-split="3"] { grid-template-columns: repeat(3, 1fr); }
.card-grid[data-split="4"] { grid-template-columns: repeat(2, 1fr); }
.card-grid[data-split="5"] { grid-template-columns: repeat(3, 1fr); }
.card-grid[data-split="6"] { grid-template-columns: repeat(3, 1fr); }
.card-grid[data-split="7"] { grid-template-columns: repeat(4, 1fr); }
.card-grid[data-split="8"] { grid-template-columns: repeat(4, 1fr); }

/* 좁은 viewport에서는 카드들이 너무 납작해지므로 페이지 스크롤 허용 + 최소 높이 보장 */
@media (max-width: 900px) {
    body { overflow: auto; }
    .util-main { flex: initial; display: block; }
    .card-grid { flex: initial; grid-auto-rows: minmax(260px, auto); }

    .card-grid[data-split="3"],
    .card-grid[data-split="5"],
    .card-grid[data-split="6"],
    .card-grid[data-split="7"],
    .card-grid[data-split="8"] { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
    .card-grid[data-split] { grid-template-columns: 1fr; }
}

/* ── 카드 ── */
.timer-card {
    background: var(--color-canvas);
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-lg);
    padding: 0.75rem 0.875rem 0.625rem;
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
    transition: border-color 0.2s, background 0.2s;
    container-type: inline-size;     /* 카드 너비 기준 컨테이너 쿼리 단위(cqw) 사용 */
}
.timer-card.running { border-color: var(--color-primary); }
.timer-card.finished {
    border-color: var(--color-danger);
    background: #fef2f2;
    animation: pulse-bg 0.8s ease-in-out 3;
}
.timer-card.resting { border-color: var(--color-warn); background: #fffbeb; }

@keyframes pulse-bg {
    0%, 100% { background: #fef2f2; }
    50% { background: #fecaca; }
}

.card-head {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}
.card-label {
    flex: 1;
    min-width: 0;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    padding: 0.3rem 0.5rem;
    font-family: var(--font-main);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
}
.card-label:hover { border-color: var(--color-hairline); }
.card-label:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-canvas);
}
.card-head-right {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    flex-shrink: 0;
}
.mode-select {
    font-family: var(--font-main);
    font-size: 0.82rem;
    padding: 0.3rem 0.5rem;
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-sm);
    background: var(--color-canvas);
    color: var(--color-text);
    cursor: pointer;
}
.icon-btn {
    width: 32px; height: 32px;
    background: transparent;
    border: 1px solid var(--color-hairline);
    color: var(--color-text-muted);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    line-height: 1;
}
.icon-btn:hover { background: var(--color-surface-soft); color: var(--color-text); }

/* ── 카드 본문 (시간 표시) ── */
.card-body {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.625rem;
    overflow: hidden;
}
.display-wrap {
    position: relative;
    flex: 1;
    min-height: 0;
    aspect-ratio: 1 / 1;
    max-width: 280px;
    max-height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    user-select: none;
    transition: transform 0.08s;
    container-type: size;   /* 시간 글씨를 원(display-wrap) 크기에 맞추기 위함 */
}
.display-wrap:hover { transform: scale(1.02); }
.display-wrap:active { transform: scale(0.98); }
.ring {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}
.ring-track {
    fill: none;
    stroke: var(--color-surface-soft);
    stroke-width: 6;
}
.ring-bar {
    fill: none;
    stroke: var(--color-primary);
    stroke-opacity: 0.45;
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 289.027;        /* 2π * 46 */
    stroke-dashoffset: 0;
    transition: stroke-dashoffset 0.25s linear, stroke 0.2s, stroke-opacity 0.2s;
}
/* 카드 위치별 게이지 색상 (분할 시 동그라미가 서로 구분되도록) */
.timer-card:nth-child(1) .ring-bar { stroke: #2563eb; }  /* 파랑 */
.timer-card:nth-child(2) .ring-bar { stroke: #16a34a; }  /* 초록 */
.timer-card:nth-child(3) .ring-bar { stroke: #f59e0b; }  /* 주황 */
.timer-card:nth-child(4) .ring-bar { stroke: #8b5cf6; }  /* 보라 */
.timer-card:nth-child(5) .ring-bar { stroke: #ec4899; }  /* 분홍 */
.timer-card:nth-child(6) .ring-bar { stroke: #14b8a6; }  /* 청록 */
.timer-card:nth-child(7) .ring-bar { stroke: #ef4444; }  /* 빨강 */
.timer-card:nth-child(8) .ring-bar { stroke: #eab308; }  /* 황색 */

/* 상태 색상은 위치 색을 덮어씀 (강조 의미) */
.timer-card.resting .ring-bar { stroke: var(--color-warn); }
.timer-card.finished .ring-bar { stroke: var(--color-danger); }

.display {
    text-align: center;
    z-index: 1;
}
.time-text {
    font-size: clamp(1.1rem, 26cqmin, 4.5rem);   /* 원(display-wrap) 크기에 비례 */
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    color: var(--color-text);
    letter-spacing: -0.02em;
    line-height: 1;
}
.sub-text {
    margin-top: 0.25rem;
    font-size: clamp(0.62rem, 7cqmin, 0.95rem);
    color: var(--color-text-muted);
    font-weight: 600;
    min-height: 1.1em;
}

/* ── 모드별 설정 ── */
.mode-config {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.85rem;
}
.mode-config[hidden] { display: none; }   /* .mode-config의 display:flex가 [hidden]을 가리지 않도록 */
.preset-row {
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
    justify-content: center;
}
/* 분할 2 이상이면 카드가 좁아지므로 프리셋 버튼은 숨기고 직접 입력만 남김 */
.card-grid:not([data-split="1"]) .preset-row { display: none; }
.preset {
    padding: 0.3rem 0.6rem;
    font-family: var(--font-main);
    font-size: 0.78rem;
    font-weight: 600;
    background: var(--color-surface);
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-pill);
    color: var(--color-text-muted);
    cursor: pointer;
}
.preset:hover { background: var(--color-primary-soft); color: var(--color-primary); border-color: var(--color-primary); }
.manual-row {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    justify-content: center;
    flex-wrap: wrap;
    color: var(--color-text-muted);
}
.manual-row input[type="number"] {
    width: 60px;
    padding: 0.3rem 0.4rem;
    font-family: var(--font-main);
    font-size: 0.95rem;
    text-align: center;
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-sm);
    background: var(--color-canvas);
    color: var(--color-text);
    font-variant-numeric: tabular-nums;
}
.manual-row input:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: -1px;
    border-color: var(--color-primary);
}
.config-hint {
    margin: 0;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.8rem;
}
.lap-list {
    list-style: none;
    margin: 0;
    padding: 0;
    max-height: 80px;
    overflow-y: auto;
    font-size: 0.82rem;
    font-variant-numeric: tabular-nums;
    color: var(--color-text-muted);
}
.lap-list li {
    display: flex;
    justify-content: space-between;
    padding: 0.15rem 0.5rem;
    border-bottom: 1px solid var(--color-hairline);
}
.lap-list li:last-child { border-bottom: none; }

/* ── 카드 푸터 (버튼) ── */
.card-foot {
    display: flex;
    gap: 0.375rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 0.875rem;
}
.btn {
    padding: 0.45rem 0.8rem;
    font-family: var(--font-main);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, transform 0.05s;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary {
    background: var(--color-primary);
    color: white;
}
.btn-primary:hover:not(:disabled) { background: var(--color-primary-dark); }
.btn-ghost {
    background: transparent;
    color: var(--color-text-muted);
    border-color: var(--color-hairline);
}
.btn-ghost:hover:not(:disabled) {
    background: var(--color-surface-soft);
    color: var(--color-text);
}

/* ── 풀스크린 모드 (카드 그리드 전체) ── */
.card-grid:fullscreen {
    width: 100vw;
    height: 100vh;
    padding: 1rem;
    background: var(--color-canvas);
    grid-auto-rows: 1fr;       /* 카드들이 세로로 균등 분할 */
    overflow: auto;
}
.card-grid:fullscreen .timer-card {
    min-height: 0;             /* 기본 320px 제거 */
    overflow: hidden;
}
.card-grid:fullscreen .time-text {
    font-size: clamp(2.2rem, 8vw, 8rem);
}
.card-grid:fullscreen .display-wrap {
    max-width: 100%;
}
.card-grid:fullscreen .ring-track,
.card-grid:fullscreen .ring-bar {
    stroke-width: 4;
}

/* ── Footer ── */
.util-footer {
    border-top: 1px solid var(--color-hairline);
    background: var(--color-canvas);
    padding: 1.25rem 0;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-align: center;
}

/* ── 반응형 ── */
@media (max-width: 600px) {
    .timer-card { padding: 0.875rem 0.75rem 0.75rem; min-height: 280px; }
    .display-wrap { max-width: 220px; }
    .split-label { padding: 0 0.375rem 0 0.5rem; }
    .split-btn { width: 28px; height: 28px; font-size: 0.82rem; }
}