/* =========================
   Calculator Controls
========================= */

/* Buttons */
.save-btn,
.load-btn,
.share-btn,
.pr-btn {
    background: var(--btn-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-light);
    border-radius: 6px;
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: 10px 20px;
    transition: all 0.2s ease;
}

.save-btn:hover,
.load-btn:hover,
.share-btn:hover,
.pr-btn:hover {
    background: var(--btn-secondary-hover);
    color: var(--text-primary);
    border-color: var(--accent-primary);
    transform: translateY(-1px);
}

.unit-btn {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-light);
    border-radius: 6px;
    font-size: var(--font-size-sm);
    font-weight: bold;
    padding: 8px 16px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.unit-btn.active {
    background: var(--accent-primary);
    color: #1a1a1a;
    border-color: var(--accent-primary);
    box-shadow: 0 2px 4px rgba(224, 253, 83, 0.3);
}

.unit-btn:hover:not(.active) {
    background: var(--nav-hover);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.calculate-btn {
    width: 100%;
    padding: 6px;
    background: var(--btn-primary);
    color: #1a1a1a;
    border: none;
    border-radius: 4px;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
    height: 32px;
}

.calculate-btn:hover {
    background: var(--btn-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(224, 253, 83, 0.3);
}

/* Button Groups */
.unit-selector {
    width: 100%;
    margin: 0 auto;
    padding: 0 20px;
}

.control-buttons {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
    width: 100%;
}

.storage-buttons {
    display: flex;
    gap: 8px;
}

.storage-buttons button {
    min-width: 80px;
    padding: 10px 16px;
    font-size: 14px;
    border-radius: 6px;
}

.unit-buttons {
    display: flex;
    gap: 4px;
    background: var(--bg-secondary);
    border-radius: 6px;
    padding: 2px;
}

.unit-buttons button {
    min-width: 48px;
    padding: 8px 12px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 4px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.unit-buttons button.active {
    background: var(--bg-primary);
    color: var(--accent-primary);
    box-shadow: var(--shadow-light);
}

/* Section Header */
.section-header {
    margin: 0;
    padding: 0 var(--content-padding, 20px);
    height: var(--header-height, 52px);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-light);
    border-radius: 12px 12px 0 0;
    display: flex;
    align-items: center;
}

.section-header h2 {
    margin: 0;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

/* =========================
   1RM Calculator Specific Styles
========================= */

/* Calculator Grid Layout */
.calculator-grid {
    display: grid;
    gap: var(--grid-gap, 24px);
    padding: var(--container-padding, 20px);
    width: 100%;
}

.calculator-grid--rm {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    padding: 20px;
    width: 100%;
}

.calculator-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    width: 100%;
    margin: 0;
}

/* 1RM 계산기 카드 스타일 */
.calculator-card--rm {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 0;
}

.calculator-card--rm .section-header {
    height: 40px;
    padding: 0 12px;
}

.calculator-card--rm .calculator-input {
    padding: 12px;
}

.calculator-card--rm .calculator-results {
    padding: var(--content-padding, 12px);
    border-top: 1px solid var(--border-light);
}

/* Input Styles */
.calculator-input {
    padding: var(--content-padding, 20px);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.calculator-input select,
.calculator-input .input-with-unit input {
    width: 100%;
    height: 44px;
    padding: 0 14px;
    font-size: 16px;
    font-weight: 600;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.calculator-input .input-with-unit input:focus {
    border-color: var(--accent-primary);
    background: var(--bg-primary);
    outline: none;
}

.calculator-input select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8.825L1.175 4 2.238 2.938 6 6.7l3.763-3.763L10.825 4z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

.calculator-input select:focus {
    border-color: var(--accent-primary);
    background-color: var(--bg-primary);
    outline: none;
}

.calculator-input .input-with-unit {
    position: relative;
}

.calculator-input .unit-display {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    pointer-events: none;
}

.calculator-input .calculate-btn {
    width: 100%;
    height: 44px;
    font-size: 16px;
    font-weight: 500;
    color: #1a1a1a;
    background: var(--accent-primary);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.calculator-input .calculate-btn:hover {
    background: var(--accent-secondary);
}

/* exercise-input 내부의 input-with-unit */
.exercise-input {
    padding: 20px 20px 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.exercise-input select {
    width: 100%;
    height: 44px;
    padding: 0 14px;
    font-size: 16px;
    font-weight: 600;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    cursor: pointer;
}

.exercise-input .input-with-unit {
    position: relative;
    width: 100%;
}

.exercise-input .input-with-unit input {
    width: 100%;
    height: 44px;
    padding: 0 40px 0 14px;
    font-size: 16px;
    font-weight: 600;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.exercise-input .input-with-unit input:focus {
    border-color: var(--accent-primary);
    background-color: var(--bg-primary);
    outline: none;
}

.exercise-input .unit-display {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    pointer-events: none;
}

.exercise-input .calculate-btn {
    width: 100%;
    height: 44px;
    font-size: 16px;
    font-weight: 500;
    color: #1a1a1a;
    background: var(--accent-primary);
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

/* Results Styles */
.calculator-results {
    padding: var(--content-padding, 12px);
    border-top: 1px solid var(--border-light);
}

.calculator-results--rm,
.calculator-results--movement {
    display: none;
    padding: var(--content-padding, 12px);
    border-top: 1px solid var(--border-light);
}

.calculator-results--rm.has-results,
.calculator-results--movement.has-results {
    display: block;
}

/* 1RM 결과 리스트 스타일 개선 */
.calculator-results--rm .result-element {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 12px;
    margin-bottom: 0;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-light);
    transition: background 0.1s;
}

.calculator-results--rm .result-element:nth-child(odd) {
    background: rgba(255, 255, 255, 0.02);
}

.calculator-results--rm .result-element:hover {
    background: rgba(224, 253, 83, 0.04);
}

.calculator-results--rm .result-element:last-child {
    border-bottom: none;
}

/* 입력한 회수에 해당하는 RM 강조 */
.calculator-results--rm .result-element.selected {
    background: var(--bg-secondary);
    border-left: 3px solid var(--accent-primary);
    padding-left: 9px;
}

.calculator-results--rm .result-element.selected .re-rm {
    color: var(--accent-primary);
    font-weight: 600;
}

.calculator-results--rm .result-element.selected .re-we {
    color: var(--accent-primary);
    font-weight: 600;
}

.calculator-results--rm .re-rm {
    color: var(--text-secondary);
    min-width: 45px;
    font-size: 0.85rem;
    font-weight: 500;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-variant-numeric: tabular-nums;
}

.calculator-results--rm .re-we {
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 500;
    text-align: right;
    min-width: 220px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-variant-numeric: tabular-nums;
}

.calculator-results--rm .result-element p {
    margin: 0;
}

.calculator-card--rm .result-element {
    padding: 10px 12px;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0;
    transition: background 0.1s;
}

.calculator-card--rm .result-element:nth-child(odd) {
    background: rgba(255, 255, 255, 0.02);
}

.calculator-card--rm .result-element:hover {
    background: rgba(224, 253, 83, 0.04);
}

.calculator-card--rm .result-element:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.calculator-card--rm .result-element p {
    margin: 0;
    font-size: 0.85rem;
}

.calculator-card--rm .re-rm {
    color: var(--text-secondary);
    min-width: 45px;
}

.calculator-card--rm .re-we {
    color: var(--text-primary);
    font-size: 0.85rem;
}

/* Responsive Grid Layout */
@media (min-width: 769px) and (max-width: 1199px) {
    :root {
        --grid-gap: 16px;
    }
}

@media (min-width: 481px) and (max-width: 768px) {
    :root {
        --grid-gap: 12px;
    }

    .calculator-grid--rm {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 480px) {
    :root {
        --grid-gap: 8px;
    }

    .calculator-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1200px) {
    .calculator-grid--rm {
        gap: 16px;
        padding: 16px;
    }
}

@media (max-width: 768px) {
    .calculator-grid--rm {
        grid-template-columns: 1fr;
        gap: 12px;
        padding: 12px;
    }

    .calculator-card {
        margin-bottom: 12px;
    }

    .calculator-card--rm .section-header {
        height: 36px;
        padding: 0 10px;
    }

    .calculator-card--rm .calculator-input,
    .calculator-card--rm .calculator-results {
        padding: 10px;
    }

    .calculator-results--rm .result-element {
        padding: 6px 10px;
    }

    .calculator-results--rm .result-element.selected {
        padding-left: 7px;
    }

    .calculator-results--rm .re-rm,
    .calculator-results--rm .re-we {
        font-size: 0.8rem;
    }

    .exercise-input {
        padding: 16px 16px 0;
        gap: 10px;
    }

    .exercise-input select,
    .exercise-input .input-with-unit input,
    .exercise-input .calculate-btn {
        height: 36px;
        font-size: 13px;
    }

    .calculator-card--rm .re-we {
        min-width: 150px;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .calculator-grid--rm {
        gap: 8px;
        padding: 8px;
    }

    .calculator-input,
    .calculator-results {
        padding: var(--content-padding, 16px);
    }

    .calculator-card {
        margin-bottom: 8px;
    }

    .calculator-card--rm .section-header {
        height: 32px;
        padding: 0 8px;
    }

    .calculator-card--rm .calculator-input,
    .calculator-card--rm .calculator-results {
        padding: 8px;
    }

    .calculator-results--rm .result-element {
        padding: 6px 8px;
    }

    .calculator-results--rm .result-element.selected {
        padding-left: 5px;
    }

    .calculator-results--rm .re-rm,
    .calculator-results--rm .re-we {
        font-size: 0.75rem;
    }

    .exercise-input {
        padding: 12px 12px 0;
        gap: 6px;
    }

    .exercise-input select,
    .exercise-input .input-with-unit input,
    .exercise-input .calculate-btn {
        height: 34px;
        font-size: 12px;
    }

    .exercise-input .input-with-unit input {
        padding: 0 32px 0 10px;
    }

    .calculator-card--rm .re-we {
        min-width: 140px;
        font-size: 0.75rem;
    }
}

/* 선택된 결과값도 동일한 정렬 유지 */
.calculator-results--rm .result-element.selected .re-rm,
.calculator-results--rm .result-element.selected .re-we {
    color: var(--accent-primary);
}

/* =========================
   Calculator Controls Responsive
========================= */
@media (min-width: 768px) and (max-width: 1199px) {
    .unit-selector {
        padding: 0 16px;
    }

    .control-buttons {
        gap: 12px;
        margin-bottom: 20px;
    }

    .storage-buttons {
        gap: 6px;
    }

    .storage-buttons button {
        min-width: 72px;
        padding: 9px 14px;
        font-size: 13px;
    }

    .unit-buttons {
        gap: 3px;
    }

    .unit-buttons button {
        min-width: 44px;
        padding: 7px 10px;
        font-size: 13px;
    }
}

@media (max-width: 768px) {
    .unit-selector {
        padding: 0 12px;
    }

    .control-buttons {
        gap: 8px;
        margin-bottom: 16px;
    }

    .storage-buttons {
        gap: 6px;
    }

    .storage-buttons button {
        min-width: 64px;
        padding: 8px 12px;
        font-size: 13px;
        border-radius: 6px;
    }

    .unit-buttons {
        gap: 4px;
        padding: 2px;
    }

    .unit-buttons button {
        min-width: 44px;
        padding: 8px 10px;
        font-size: 13px;
        border-radius: 5px;
    }

    .section-header {
        height: var(--header-height, 48px);
    }

    .section-header h2 {
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .unit-selector {
        padding: 0 8px;
    }

    .control-buttons {
        gap: 6px;
        margin-bottom: 12px;
    }

    .storage-buttons {
        gap: 3px;
    }

    .storage-buttons button {
        min-width: 56px;
        padding: 6px 8px;
        font-size: 11px;
        border-radius: 4px;
    }

    .unit-buttons {
        gap: 2px;
        padding: 1px;
    }

    .unit-buttons button {
        min-width: 36px;
        padding: 5px 6px;
        font-size: 11px;
        border-radius: 3px;
    }

    .section-header {
        height: var(--header-height, 44px);
    }

    .section-header h2 {
        font-size: 0.9rem;
    }
}