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

:root {
    --primary: #1a73e8;
    --primary-light: #e8f0fe;
    --primary-dark: #1557b0;
    --bg: #f8f9fa;
    --card: #ffffff;
    --border: #e8ebed;
    --text: #1e2022;
    --text-sub: #616568;
    --text-muted: #939597;
    --highlight: #fff3cd;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
    --shadow-md: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.12);
}

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ── Header ── */
.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    transition: box-shadow 0.2s;
}

.app-header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-inner {
    max-width: 720px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-logo {
    font-size: 1.3em;
    font-weight: 800;
    color: var(--primary);
    background: var(--primary-light);
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    letter-spacing: 1px;
}

.header-title {
    font-size: 0.95em;
    font-weight: 600;
    color: var(--text);
}

.header-right {
    font-size: 0.78em;
    color: var(--text-muted);
    text-align: right;
}

/* ── Container ── */
.container {
    max-width: 720px;
    margin: 0 auto;
    padding: 16px 20px 40px;
}

/* ── Search Section ── */
.search-section {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 16px;
}

.search-bar {
    display: flex;
    align-items: center;
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 4px 6px 4px 16px;
    transition: border-color 0.2s;
}

.search-bar:focus-within {
    border-color: var(--primary);
}

.search-icon {
    color: var(--text-muted);
    flex-shrink: 0;
}

.search-bar input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 1em;
    font-family: inherit;
    padding: 10px 12px;
    color: var(--text);
}

.search-bar input::placeholder {
    color: var(--text-muted);
}

.search-submit {
    width: 38px;
    height: 38px;
    border: none;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background 0.2s;
}

.search-submit:hover {
    background: var(--primary-dark);
}

/* ── Filter Toggle ── */
.filter-toggle-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
}

.filter-toggle-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: var(--card);
    color: var(--text-sub);
    font-size: 0.82em;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
}

.filter-toggle-btn:hover {
    background: var(--bg);
}

.filter-toggle-btn.active {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary);
}

.filter-toggle-btn .chevron {
    transition: transform 0.2s;
}

.filter-toggle-btn.active .chevron {
    transform: rotate(180deg);
}

.reset-btn {
    padding: 6px 12px;
    border: none;
    border-radius: 20px;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.82em;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
}

.reset-btn:hover {
    background: var(--bg);
    color: var(--text-sub);
}

/* ── Filter Panel ── */
.filter-panel {
    overflow: hidden;
    transition: max-height 0.25s ease, opacity 0.2s ease, margin-top 0.25s ease;
    max-height: 200px;
    opacity: 1;
    margin-top: 12px;
}

.filter-panel.collapsed {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
}

.filter-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-item {
    flex: 1;
    min-width: 200px;
}

.filter-item label {
    display: block;
    font-size: 0.78em;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-item select {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.9em;
    font-family: inherit;
    background: var(--bg);
    color: var(--text);
    outline: none;
    transition: border-color 0.2s;
}

.filter-item select:focus {
    border-color: var(--primary);
}

.date-range {
    display: flex;
    align-items: center;
    gap: 8px;
}

.date-range input[type="date"] {
    flex: 1;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.9em;
    font-family: inherit;
    background: var(--bg);
    color: var(--text);
    outline: none;
    transition: border-color 0.2s;
}

.date-range input[type="date"]:focus {
    border-color: var(--primary);
}

.date-sep {
    color: var(--text-muted);
    font-size: 0.9em;
}

/* ── Result Info ── */
.result-info {
    padding: 8px 4px;
    font-size: 0.85em;
    color: var(--text-muted);
    font-weight: 500;
}

/* ── Results ── */
.results {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* ── Record Card ── */
.record {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 18px;
    transition: box-shadow 0.2s, border-color 0.2s;
}

.record:hover {
    border-color: #d0d3d6;
    box-shadow: var(--shadow-sm);
}

.record-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
}

.record-caller-info {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.record-caller {
    font-weight: 700;
    font-size: 1em;
    color: var(--text);
}

.record-phone {
    font-size: 0.82em;
    color: var(--primary);
    background: var(--primary-light);
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 500;
}

.record-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.record-date {
    color: var(--text-muted);
    font-size: 0.8em;
}

.record-duration {
    font-size: 0.75em;
    color: var(--text-sub);
    background: var(--bg);
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 500;
}

/* ── Audio Player ── */
.record-audio {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 10px 0;
    padding: 8px 12px;
    background: var(--bg);
    border-radius: 12px;
}

.play-btn {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: none;
    background: var(--primary);
    color: #fff;
    font-size: 13px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background 0.2s, transform 0.1s;
}

.play-btn:hover {
    background: var(--primary-dark);
}

.play-btn:active {
    transform: scale(0.95);
}

.audio-player {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
}

.audio-seek {
    flex: 1;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--border);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.audio-seek::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    box-shadow: 0 1px 3px rgba(26,115,232,0.3);
}

.audio-seek::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    border: none;
    cursor: pointer;
}

.audio-time {
    font-size: 0.78em;
    color: var(--text-muted);
    white-space: nowrap;
    min-width: 80px;
    font-variant-numeric: tabular-nums;
}

/* ── Transcript ── */
.record-transcript {
    color: var(--text-sub);
    font-size: 0.9em;
    line-height: 1.8;
    white-space: pre-wrap;
    word-break: break-word;
}

.record-transcript mark {
    background: var(--highlight);
    color: var(--text);
    padding: 1px 4px;
    border-radius: 3px;
    font-weight: 500;
}

.no-transcript {
    color: var(--text-muted);
    font-style: italic;
    font-size: 0.85em;
}

/* ── Pagination ── */
.pagination {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin-top: 24px;
    padding-bottom: 20px;
    flex-wrap: wrap;
}

.pagination button {
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    border: 1px solid var(--border);
    background: var(--card);
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.85em;
    font-family: inherit;
    color: var(--text-sub);
    transition: all 0.2s;
}

.pagination button.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    font-weight: 600;
}

.pagination button:hover:not(.active):not(:disabled) {
    background: var(--bg);
    border-color: #d0d3d6;
}

.pagination button:disabled {
    color: var(--text-muted);
    cursor: default;
}

/* ── Loading ── */
.loading {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-muted);
    font-size: 0.9em;
}

/* ── Mobile ── */
@media (max-width: 640px) {
    .header-inner {
        padding: 10px 16px;
    }

    .header-title {
        display: none;
    }

    .container {
        padding: 12px 12px 32px;
    }

    .search-section {
        padding: 12px;
        border-radius: 12px;
    }

    .filter-row {
        flex-direction: column;
        gap: 10px;
    }

    .filter-item {
        min-width: auto;
    }

    .record {
        padding: 14px;
        border-radius: 12px;
    }

    .record-header {
        flex-direction: column;
        gap: 6px;
    }

    .record-meta {
        flex-shrink: initial;
    }

    .record-audio {
        padding: 6px 10px;
    }
}