/* ================== Unit Converter Page Styles ================== */

/* ===== 핵심 변환기 (Hero Converter) ===== */
.hero-converter {
    background: var(--bg-card);
    border-radius: 24px;
    padding: 36px;
    margin-top: 30px;
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.08);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.hero-converter::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent-gradient);
    border-radius: 24px 24px 0 0;
}

.hero-converter__main {
    display: flex;
    align-items: flex-end;
    gap: 20px;
    margin-bottom: 30px;
    max-width: 100%;
}

@media (max-width: 768px) {
    .hero-converter__main {
        flex-direction: column;
        align-items: stretch;
    }
}

/* Hero Input/Output */
.hero-input,
.hero-output {
    flex: 1;
    min-width: 0;
    max-width: 340px;
}

@media (max-width: 768px) {
    .hero-input,
    .hero-output {
        max-width: 100%;
    }
}

.hero-input__label,
.hero-output__label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hero-input__label::before {
    content: '📝';
    font-size: 1rem;
}

.hero-output__label::before {
    content: '✨';
    font-size: 1rem;
}

.hero-input__field,
.hero-output__field {
    display: flex;
    border: 2px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    background: linear-gradient(145deg, #f8f9fa, #f1f3f5);
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.hero-input__field:hover {
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: 0 6px 24px rgba(99, 102, 241, 0.12);
}

.hero-input__field:focus-within {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15), 0 8px 32px rgba(99, 102, 241, 0.15);
}

.hero-output__field {
    border-color: var(--accent-primary);
    background: linear-gradient(145deg, rgba(99, 102, 241, 0.08), rgba(99, 102, 241, 0.03));
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.hero-input__number,
.hero-output__number {
    flex: 1;
    padding: 20px 24px;
    border: none;
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    background: transparent;
    min-width: 0;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: -0.5px;
}

.hero-output__number {
    color: var(--accent-primary);
    text-shadow: 0 2px 8px rgba(99, 102, 241, 0.2);
}

.hero-input__number:focus,
.hero-output__number:focus {
    outline: none;
}

.hero-input__number::placeholder {
    color: var(--text-muted);
    opacity: 0.6;
}

.hero-input__unit,
.hero-output__unit {
    padding: 20px 18px;
    border: none;
    border-left: 1px solid var(--border-color);
    background: linear-gradient(145deg, var(--bg-main), var(--bg-card));
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    cursor: pointer;
    min-width: 85px;
    text-align: center;
    transition: all 0.2s ease;
}

.hero-input__unit:hover {
    background: linear-gradient(145deg, rgba(99, 102, 241, 0.1), rgba(99, 102, 241, 0.05));
    color: var(--accent-primary);
}

.hero-output__unit {
    border-left-color: rgba(99, 102, 241, 0.3);
    background: linear-gradient(145deg, rgba(99, 102, 241, 0.15), rgba(99, 102, 241, 0.08));
    color: var(--accent-primary);
}

.hero-input__unit:focus,
.hero-output__unit:focus {
    outline: none;
}

/* Arrow & Swap Button */
.hero-converter__arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-bottom: 5px;
}

@media (max-width: 768px) {
    .hero-converter__arrow {
        padding: 0;
        transform: rotate(90deg);
    }
}

.btn-swap {
    width: 56px;
    height: 56px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    background: linear-gradient(145deg, var(--bg-card), var(--bg-main));
    color: var(--accent-primary);
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.1);
}

.btn-swap:hover {
    border-color: var(--accent-primary);
    background: var(--accent-gradient);
    color: white;
    transform: scale(1.1) rotate(180deg);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
}

/* ===== 결과 섹션 ===== */
.results-section {
    margin-top: 30px;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.results-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
}

.btn-copy-all {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    border: 2px solid #818283;
    border-radius: 10px;
    background:#818283;
    color: white;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.2);
}

.btn-copy-all:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.35);
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
}

@media (max-width: 1024px) {
    .results-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 600px) {
    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.result-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    text-align: center;
    position: relative;
    transition: all 0.2s;
    cursor: pointer;
}

.result-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.15);
}

.result-card--highlight {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
}

.result-card__unit {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.result-card__value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 6px;
    word-break: break-all;
    line-height: 1.2;
}

.result-card__desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.result-card__copy {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 8px;
    background: transparent;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s, background 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.result-card:hover .result-card__copy {
    opacity: 1;
}

.result-card__copy:hover {
    background: rgba(99, 102, 241, 0.15);
}

/* ===== Bottom Grid (Code + Settings) ===== */
.bottom-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 30px;
}

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

.section-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
}

/* Code Section */
.code-section {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 4px 20px rgba(45, 52, 54, 0.08);
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.btn-copy {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border: 2px solid var(--accent-primary);
    border-radius: 8px;
    background: transparent;
    color: var(--accent-primary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-copy:hover {
    background: var(--accent-primary);
    color: white;
}

.code-block {
    background: #1e1e1e;
    color: #d4d4d4;
    padding: 20px;
    border-radius: 12px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    overflow-x: auto;
    white-space: pre;
    margin: 0;
}

/* Settings Section */
.settings-section {
    background: var(--bg-card);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(45, 52, 54, 0.08);
    padding: 24px;
}

.settings-section .section-title {
    margin-bottom: 20px;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 16px;
}

@media (max-width: 500px) {
    .settings-grid {
        grid-template-columns: 1fr;
    }
}

.setting-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.setting-item__label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.setting-item__input {
    display: flex;
    align-items: center;
    gap: 8px;
}

.setting-item__input input {
    flex: 1;
    padding: 12px 14px;
    border: 2px solid #d1d5db;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    background: linear-gradient(145deg, #f8f9fa, #f1f3f5);
    min-width: 0;
    transition: all 0.2s ease;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05);
}

.setting-item__input input:hover {
    border-color: #9ca3af;
    background: linear-gradient(145deg, #ffffff, #f8f9fa);
}

.setting-item__input input:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1), inset 0 1px 3px rgba(0, 0, 0, 0.05);
}

.setting-item__input span {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
    min-width: 24px;
}

.setting-item__hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin: 0;
}

/* Viewport Presets */
.viewport-presets {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.preset-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.preset-btn {
    padding: 8px 14px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-main);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.preset-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.preset-btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

/* ===== Table Section ===== */
.table-section {
    margin-top: 30px;
    background: var(--bg-card);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 4px 20px rgba(45, 52, 54, 0.08);
}

.table-section .section-title {
    margin-bottom: 20px;
}

.convert-table-wrapper {
    overflow-x: auto;
    margin: -4px;
    padding: 4px;
}

.convert-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.convert-table th,
.convert-table td {
    padding: 14px 12px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.convert-table th {
    background: var(--bg-main);
    font-weight: 700;
    color: var(--accent-primary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.convert-table td {
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-secondary);
}

.convert-table tr:hover td {
    background: rgba(99, 102, 241, 0.05);
}

.convert-table td:first-child {
    font-weight: 700;
    color: var(--text-primary);
}

/* ===== Info Section ===== */
.info-section {
    margin-top: 40px;
    padding: 30px;
    background: var(--bg-card);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(45, 52, 54, 0.08);
}

.info-section__title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.info-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

@media (max-width: 1024px) {
    .info-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .info-cards {
        grid-template-columns: 1fr;
    }
}

.info-card {
    background: var(--bg-main);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.2s;
}

.info-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.info-card__icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.info-card__title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.info-card__desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* ===== Related Guide ===== */
.related-guide {
    margin-top: 40px;
}

.related-guide__inner {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(45, 52, 54, 0.08);
}

.related-guide__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.related-guide__desc {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.related-guide__link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--accent-secondary);
    color: white;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
}

.related-guide__link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(78, 205, 196, 0.3);
}

/* ===== Mobile Preview Bar ===== */
.mobile-preview-bar {
    display: none;
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    border-radius: 16px;
    padding: 12px 20px;
    box-shadow: 0 8px 32px rgba(45, 52, 54, 0.2);
    z-index: 100;
    border: 2px solid var(--accent-primary);
}

@media (max-width: 768px) {
    .mobile-preview-bar {
        display: flex;
        align-items: center;
        gap: 16px;
        width: calc(100% - 40px);
        max-width: 400px;
    }
}

.mobile-preview-bar__info {
    flex: 1;
}

.mobile-preview-bar__row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.mobile-preview-bar__value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.mobile-preview-bar__arrow {
    color: var(--accent-primary);
    font-weight: 700;
    font-size: 1.2rem;
}

.mobile-preview-bar__result {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.mobile-preview-bar__actions {
    display: flex;
    gap: 8px;
}

.mobile-preview-bar__btn {
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 12px;
    background: var(--accent-gradient);
    color: white;
    font-size: 1.3rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s;
}

.mobile-preview-bar__btn:hover {
    transform: scale(1.05);
}

/* ===== Toast ===== */
.toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--text-primary);
    color: white;
    padding: 14px 28px;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 600;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.toast.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* ===== Dark Mode ===== */
[data-theme="dark"] .code-block {
    background: #0d0d0d;
}

[data-theme="dark"] .hero-input__number,
[data-theme="dark"] .hero-output__number {
    background: transparent;
}

[data-theme="dark"] .setting-item__input input {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
}

[data-theme="dark"] .setting-item__input input:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.25);
}

[data-theme="dark"] .setting-item__input input:focus {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2), inset 0 1px 3px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .result-card {
    background: rgba(255, 255, 255, 0.02);
}

[data-theme="dark"] .hero-preview {
    background: rgba(255, 255, 255, 0.02);
}

[data-theme="dark"] .info-card {
    background: rgba(255, 255, 255, 0.02);
}