/**
 * ============================================================
 * MoneyBull Calculator
 * Component Styles
 * ------------------------------------------------------------
 * Reusable UI Components (Refined Ver.)
 * ============================================================
 */

/* ============================================================
   Base Card Component
============================================================ */
.card {
    background: var(--card-background);
    border: var(--card-border);
    border-radius: var(--radius-lg); /* variables.css 스펙에 맞춰 일관성 확보 */
    box-shadow: var(--shadow-card);
    padding: var(--card-padding);
    transition: 
        transform var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1),
        box-shadow var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
    backface-visibility: hidden; /* 모바일/웹 3D 가속 시 폰트 흐려짐 방지 */
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

/* ============================================================
   Header Components
============================================================ */
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
}

.brand-area {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.brand-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    font-size: 28px;
    box-shadow: var(--shadow-md);
}

.brand-subtitle {
    margin-top: var(--space-1);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* ============================================================
   Button Component
============================================================ */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 52px;
    padding-left: var(--space-6);
    padding-right: var(--space-6);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    user-select: none;
    transition:
        background-color var(--transition-fast),
        border-color var(--transition-fast),
        color var(--transition-fast),
        transform var(--transition-fast),
        box-shadow var(--transition-fast),
        opacity var(--transition-fast);
}

.button:hover {
    transform: translateY(-2px);
}

.button:active {
    transform: translateY(0);
}

.button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* Primary Button */
.button.primary {
    background: var(--gradient-primary);
    color: var(--color-text-white);
    box-shadow: 0 8px 20px var(--color-primary-focus);
}

.button.primary:hover {
    background: var(--gradient-money);
    box-shadow: 0 12px 24px rgba(5, 150, 105, 0.3);
}

/* Secondary Button */
.button.secondary {
    background: var(--color-surface);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.button.secondary:hover {
    background: var(--color-background-soft);
    border-color: var(--color-text-secondary);
}

/* ============================================================
   Form Component
============================================================ */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-group label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
}

.input-box {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.input-box input {
    width: 100%;
    height: 52px;
    padding-left: var(--space-4);
    padding-right: 64px; /* 단위 간 격차 안전 여백 확보 */
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    font-weight: var(--font-weight-semibold);
    font-variant-numeric: tabular-nums; /* 화폐 및 숫자 입력 시 커서 떨림 방지 */
    transition:
        border-color var(--transition-fast),
        box-shadow var(--transition-fast);
}

.input-box input:hover {
    border-color: var(--color-text-secondary);
}

.input-box input:focus {
    outline: none;
    border-color: var(--color-primary);
    /* 개선: 변동폭 오프셋 링 디자인 시스템과 명밀하게 결합 */
    box-shadow: 0 0 0 4px var(--color-primary-focus);
}

.input-unit {
    position: absolute;
    right: var(--space-4);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    pointer-events: none;
}

/* ============================================================
   Investment Summary Card
============================================================ */
.summary-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: var(--card-padding);
    margin-top: var(--space-6);
    overflow: hidden;
    position: relative;
}

.summary-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: var(--gradient-primary);
}

.summary-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.summary-header h2 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
}

.summary-header p {
    margin-top: var(--space-1.5);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ============================================================
   Growth Badge
============================================================ */
.growth-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-1.5) var(--space-3.5);
    border-radius: var(--radius-full);
    background: var(--color-badge);
    color: var(--color-profit);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
}

/* ============================================================
   Summary Main Value
============================================================ */
.summary-main {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-8) var(--space-4);
    background: var(--color-profit-light); 
    border-radius: var(--radius-md);
    text-align: center;
}

.summary-label {
    margin-bottom: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.summary-value {
    display: block;
    font-size: var(--font-size-4xl); /* variables.css 스케일 동기화 (초대형 확보) */
    line-height: 1.1;
    font-weight: var(--font-weight-extrabold);
    letter-spacing: -0.04em;
    color: var(--color-primary-dark);
    font-variant-numeric: tabular-nums;
}

/* ============================================================
   Profit Box
============================================================ */
.summary-profit {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--space-4);
    padding: var(--space-5) var(--space-6);
    border-radius: var(--radius-md);
    background: var(--color-background-soft);
    border: 1px solid var(--color-border);
}

.summary-profit-label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

.summary-profit-value {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-profit);
    font-variant-numeric: tabular-nums;
}

/* ============================================================
   Result Card
============================================================ */
.result-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: var(--card-padding);
    margin-top: var(--space-6);
    transition:
        transform var(--transition-normal),
        box-shadow var(--transition-normal);
}

.result-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.result-card h2 {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

/* ============================================================
   Result Item
============================================================ */
.result-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-3);
    border-bottom: 1px solid var(--color-border);
    border-radius: var(--radius-sm); /* 기축 패딩 변경 레이아웃 무너짐 방지 */
    transition: background-color var(--transition-fast);
}

.result-item:hover {
    background: var(--color-background-soft);
}

.result-item:last-child {
    border-bottom: none;
}

.result-item span {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2.5);
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

.result-item strong {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}

/* Highlight Result */
.result-item.highlight {
    margin-top: var(--space-4);
    padding: var(--space-5) var(--space-4);
    background: var(--color-profit-light);
    border-radius: var(--radius-md);
    border: none;
}

.result-item.highlight strong {
    font-size: var(--font-size-xl);
    color: var(--color-profit);
}

/* ============================================================
   Badge Component
============================================================ */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 28px;
    padding-left: var(--space-3);
    padding-right: var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
}

.badge.success {
    background: var(--color-primary-light);
    color: var(--color-success);
}

/* ============================================================
   Loading State
============================================================ */
.loading {
    opacity: 0.5;
    pointer-events: none;
    filter: grayscale(40%);
    transition: opacity var(--transition-normal);
}

/* ============================================================
   Hidden Utility
============================================================ */
.hidden {
    display: none !important;
}

/* ============================================================
   Responsive (Mobile & Tablet)
============================================================ */
@media (max-width: 768px) {
    .summary-card,
    .result-card {
        padding: var(--space-5);
    }

    .summary-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
    }

    .summary-value {
        font-size: var(--font-size-3xl);
    }

    .summary-profit,
    .result-item {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        width: 100%;
    }
}

/* Small Mobile Devices */
@media (max-width: 420px) {
    .summary-value {
        font-size: var(--font-size-2xl);
    }

    .button {
        width: 100%;
    }
    
    .summary-profit {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
    }
}