/* ========== Unit Converter Specific Styles ========== */

/* ===== App Layout ===== */
.app-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px 40px;
}

/* ===== Header ===== */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 12px 24px;
}

.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.logo {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.logo span {
    opacity: 0.6;
    font-weight: 400;
    font-size: 0.85rem;
    color: var(--fg2);
}

.seal-container {
    width: 42px;
    height: 42px;
    flex-shrink: 0;
    cursor: pointer;
    border-radius: 4px;
    overflow: visible;
}

.seal-container canvas {
    display: block;
}

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

.controls select {
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--fg);
    border-radius: var(--radius);
    padding: 4px 8px;
    font-size: 0.85rem;
    cursor: pointer;
    outline: none;
}

.controls button {
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--fg);
    padding: 5px 12px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all var(--transition);
    white-space: nowrap;
}

.controls button:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ===== Global Search ===== */
.search-wrap {
    position: relative;
}

.search-wrap input {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--fg);
    padding: 5px 12px;
    font-size: 0.85rem;
    width: 180px;
    outline: none;
    transition: all var(--transition);
}

.search-wrap input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
    width: 240px;
}

.search-wrap input::placeholder {
    color: var(--fg3);
}

.search-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    width: 280px;
    max-height: 300px;
    overflow-y: auto;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 0 0 var(--radius) var(--radius);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
    display: none;
    z-index: 200;
}

.search-dropdown.visible {
    display: block;
}

.search-item {
    padding: 8px 14px;
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background var(--transition);
}

.search-item:hover {
    background: var(--accent-glow);
    color: var(--accent);
}

.search-item .si-cat {
    font-size: 0.72rem;
    color: var(--fg3);
    background: var(--bg3);
    padding: 1px 6px;
    border-radius: 10px;
}

.search-no-result {
    padding: 14px;
    text-align: center;
    color: var(--fg3);
    font-size: 0.85rem;
}

/* ===== Main Category Tabs ===== */
.main-tabs {
    display: flex;
    gap: 4px;
    padding: 16px 0 0;
    border-bottom: 2px solid var(--border);
}

.main-tab {
    padding: 10px 20px;
    background: none;
    border: none;
    color: var(--fg2);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all var(--transition);
    white-space: nowrap;
}

.main-tab:hover {
    color: var(--fg);
    background: var(--accent-glow);
}

.main-tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* ===== Sub Category Tabs ===== */
.sub-tabs {
    display: flex;
    gap: 4px;
    padding: 12px 0;
    flex-wrap: wrap;
}

.sub-tab {
    padding: 6px 14px;
    background: var(--bg2);
    border: 1px solid var(--border);
    color: var(--fg2);
    font-size: 0.88rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: 20px;
    transition: all var(--transition);
    white-space: nowrap;
}

.sub-tab:hover {
    border-color: var(--accent);
    color: var(--fg);
}

.sub-tab.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

/* ===== Panel Container ===== */
.panel {
    display: none;
}

.panel.active {
    display: block;
    animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Converter Card ===== */
.conv-card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    margin-top: 8px;
}

.conv-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--fg);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-clear {
    margin-left: auto;
    background: none;
    border: 1px solid var(--border);
    color: var(--fg3);
    padding: 3px 10px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.78rem;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-clear:hover {
    border-color: var(--err);
    color: var(--err);
    background: rgba(248, 81, 73, 0.08);
}

/* ===== Unit Row ===== */
.unit-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
}

.unit-row:last-child {
    border-bottom: none;
}

.unit-row:hover {
    background: var(--accent-glow);
    margin: 0 -12px;
    padding: 10px 12px;
    border-radius: var(--radius);
}

.unit-label {
    min-width: 90px;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--fg2);
    flex-shrink: 0;
}

.unit-label .unit-abbr {
    display: block;
    font-size: 0.78rem;
    font-weight: 400;
    color: var(--fg3);
    margin-top: 1px;
}

.unit-input {
    flex: 1;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--fg);
    padding: 10px 14px;
    font-size: 1rem;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-variant-numeric: tabular-nums;
    outline: none;
    transition: all var(--transition);
    min-width: 0;
}

.unit-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.unit-input.has-expr {
    border-color: var(--warn);
    box-shadow: 0 0 0 3px rgba(210, 153, 34, 0.15);
}

.unit-input::placeholder {
    color: var(--fg3);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 0.9rem;
}

/* Expression result hint */
.expr-hint {
    font-size: 0.82rem;
    color: var(--warn);
    padding: 2px 0 0 92px;
    font-family: 'SF Mono', 'Fira Code', monospace;
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: all 0.2s ease;
}

.expr-hint.visible {
    opacity: 1;
    max-height: 24px;
    padding-bottom: 4px;
}

/* Copy button on each row */
.btn-copy-unit {
    background: none;
    border: none;
    color: var(--fg3);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 4px 6px;
    border-radius: 4px;
    opacity: 0;
    transition: all var(--transition);
    flex-shrink: 0;
}

.unit-row:hover .btn-copy-unit {
    opacity: 1;
}

.btn-copy-unit:hover {
    color: var(--accent);
    background: var(--accent-glow);
}

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

/* ===== Expand More Button ===== */
.btn-expand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
    padding: 8px;
    margin-top: 4px;
    background: none;
    border: 1px dashed var(--border);
    border-radius: var(--radius);
    color: var(--fg3);
    font-size: 0.82rem;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-expand:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-glow);
}

.btn-expand .arrow {
    transition: transform 0.25s ease;
    display: inline-block;
}

.btn-expand.expanded .arrow {
    transform: rotate(180deg);
}

.extra-units {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}

.extra-units.visible {
    max-height: 400px;
}

/* ===== Fee Calculator ===== */
.fee-section {
    margin-top: 8px;
}

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

.fee-row label {
    min-width: 110px;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--fg2);
    flex-shrink: 0;
}

.fee-row select,
.fee-row input {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--fg);
    padding: 8px 12px;
    font-size: 0.95rem;
    font-family: 'SF Mono', 'Fira Code', monospace;
    outline: none;
    transition: border var(--transition);
    flex: 1;
    min-width: 120px;
}

.fee-row select {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    cursor: pointer;
}

.fee-row select:focus,
.fee-row input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.fee-unit {
    font-size: 0.82rem;
    color: var(--fg3);
    white-space: nowrap;
    flex-shrink: 0;
}

.fee-divider {
    border: none;
    border-top: 1px dashed var(--border);
    margin: 12px 0;
}

.fee-hint {
    font-size: 0.78rem;
    color: var(--fg3);
    margin-top: -8px;
    margin-bottom: 12px;
    padding-left: 122px;
}

/* Fee result */
.fee-result {
    background: var(--bg);
    border: 1px solid var(--accent);
    border-radius: var(--radius);
    padding: 16px 20px;
    text-align: center;
    margin-top: 8px;
}

.fee-result-label {
    font-size: 0.82rem;
    color: var(--fg2);
    margin-bottom: 6px;
}

.fee-result-value {
    font-size: 1.4rem;
    font-weight: 700;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-variant-numeric: tabular-nums;
    color: var(--accent);
}

.fee-result-sub {
    font-size: 0.9rem;
    color: var(--fg2);
    margin-top: 2px;
}

/* Fee mode toggle */
.fee-mode-toggle {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
}

.fee-mode-btn {
    padding: 6px 14px;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--fg2);
    font-size: 0.82rem;
    cursor: pointer;
    border-radius: var(--radius);
    transition: all var(--transition);
}

.fee-mode-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.fee-mode-btn:hover:not(.active) {
    border-color: var(--accent);
    color: var(--accent);
}

.fee-mode-panel {
    display: none;
}

.fee-mode-panel.active {
    display: block;
}

/* ===== File size row ===== */
.file-size-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.file-size-row input {
    flex: 1;
    min-width: 80px;
}

.file-size-row select {
    width: 70px;
    flex: none;
}

/* ===== Base Conversion Extra Info ===== */
.base-info {
    display: flex;
    gap: 16px;
    margin-top: 8px;
    padding: 10px 14px;
    background: var(--bg);
    border-radius: var(--radius);
    font-size: 0.82rem;
    flex-wrap: wrap;
}

.base-info-item {
    color: var(--fg2);
}

.base-info-item span {
    color: var(--accent);
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-weight: 600;
}

/* ===== Daily Units Layout ===== */
.daily-input-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.daily-input-row label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--fg2);
    min-width: 60px;
}

.daily-input-row input {
    flex: 1;
    min-width: 120px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--fg);
    padding: 8px 12px;
    font-size: 0.95rem;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-variant-numeric: tabular-nums;
    outline: none;
    transition: all var(--transition);
}

.daily-input-row input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.daily-input-row select {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--fg);
    padding: 8px 12px;
    font-size: 0.88rem;
    outline: none;
    cursor: pointer;
}

/* Daily results grid */
.daily-results {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 8px;
}

.daily-result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid transparent;
    transition: background var(--transition);
}

.daily-result-item:hover {
    background: var(--bg2);
}

.daily-result-item .dr-value {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-variant-numeric: tabular-nums;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--accent);
}

.daily-result-item .dr-unit {
    font-size: 0.82rem;
    color: var(--fg2);
    margin-left: 8px;
    flex-shrink: 0;
}

/* Temperature special layout */
.temp-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.temp-row:last-child {
    border-bottom: none;
}

.temp-symbol {
    font-size: 1.2rem;
    min-width: 40px;
    text-align: center;
    color: var(--fg2);
    flex-shrink: 0;
}

.temp-input {
    flex: 1;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--fg);
    padding: 10px 14px;
    font-size: 1.1rem;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-variant-numeric: tabular-nums;
    outline: none;
    transition: all var(--transition);
}

.temp-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.temp-name {
    font-size: 0.85rem;
    color: var(--fg2);
    min-width: 80px;
    flex-shrink: 0;
}

/* ===== Copy All Button ===== */
.btn-copy-all {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--fg);
    padding: 6px 14px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.82rem;
    margin-top: 16px;
    transition: all var(--transition);
}

.btn-copy-all:hover {
    border-color: var(--accent);
    color: var(--accent);
}

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

/* ===== Fiat Converter ===== */
.fiat-divider {
    border: none;
    border-top: 1px dashed var(--border);
    margin: 16px 0;
}

.fiat-currency-label {
    font-size: 0.88rem;
    color: var(--fg3);
    padding: 8px 12px;
    flex-shrink: 0;
    min-width: 50px;
}

.fiat-quick-ref {
    margin-top: 16px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 8px;
}

.fiat-ref-item {
    padding: 8px 14px;
    background: var(--bg);
    border-radius: var(--radius);
    font-size: 0.85rem;
    display: flex;
    justify-content: space-between;
}

.fiat-ref-item .fr-label {
    color: var(--fg2);
}

.fiat-ref-item .fr-value {
    color: var(--accent);
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-weight: 600;
}

/* ===== CIDR Calculator ===== */
.cidr-results {
    margin-top: 12px;
}

.cidr-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    font-size: 0.92rem;
}

.cidr-row:last-child {
    border-bottom: none;
}

.cidr-row span:first-child {
    color: var(--fg2);
    font-weight: 600;
}

.cidr-row span:last-child {
    color: var(--accent);
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-variant-numeric: tabular-nums;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    header {
        padding: 10px 16px;
    }

    .header-top {
        flex-wrap: wrap;
    }

    .app-container {
        padding: 0 12px 32px;
    }

    .main-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .main-tab {
        padding: 8px 14px;
        font-size: 0.85rem;
    }

    .sub-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        flex-wrap: nowrap;
    }

    .conv-card {
        padding: 16px;
    }

    .unit-label {
        min-width: 60px;
    }

    .unit-row:hover {
        margin: 0;
        padding: 10px 0;
    }

    .fee-row {
        flex-direction: column;
        align-items: stretch;
    }

    .fee-row label {
        min-width: auto;
    }

    .fee-hint {
        padding-left: 0;
    }

    .daily-results {
        grid-template-columns: 1fr 1fr;
    }

    .daily-input-row {
        flex-direction: column;
        align-items: stretch;
    }

    .temp-row {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .daily-results {
        grid-template-columns: 1fr;
    }

    .unit-label {
        min-width: 50px;
        font-size: 0.8rem;
    }

    .unit-input {
        font-size: 0.88rem;
    }

    .expr-hint {
        padding-left: 62px;
    }
}