/**
 * 🏠 우리집 가계부 - 토스 스타일 CSS
 * 모바일 퍼스트 + 깔끔한 디자인
 */

/* ============================================
   CSS Variables (토스 디자인 시스템)
   ============================================ */
:root {
    /* 배경 */
    --bg-primary: #F5F6F8;
    --bg-card: #FFFFFF;
    --bg-hover: #F0F1F4;

    /* 텍스트 */
    --text-primary: #191F28;
    --text-secondary: #8B95A1;
    --text-tertiary: #B0B8C1;

    /* 포인트 컬러 */
    --toss-blue: #3182F6;
    --toss-blue-light: #E8F3FF;

    /* 상태 컬러 */
    --color-up: #F04452;
    --color-down: #3182F6;
    --color-neutral: #8B95A1;

    /* 카테고리 컬러 */
    --cat-food: #FF6B35;
    --cat-transport: #4ECDC4;
    --cat-fixed: #6366F1;
    --cat-etc: #8B5CF6;
    --cat-insurance: #10B981;
    --cat-subscription: #EC4899;

    /* 그림자 */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

    /* 간격 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* 반경 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
}

/* ============================================
   Reset & Base
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ============================================
   App Container
   ============================================ */
.app {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    background: var(--bg-primary);
}

/* ============================================
   Header
   ============================================ */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-card);
    border-bottom: 1px solid #EAEEF3;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    max-width: 480px;
    margin: 0 auto;
}

.header-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.sync-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--bg-primary);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

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

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

.sync-icon {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.sync-btn.loading .sync-icon {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* ============================================
   Island (섹션 그룹)
   ============================================ */
.island {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.island-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid #F0F1F4;
}

.island-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.island-badge {
    background: var(--toss-blue);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.island-section {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid #F0F1F4;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ============================================
   Monthly Cards (수입/지출/잔액)
   ============================================ */
.monthly-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
}

.monthly-card {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
}

.monthly-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.monthly-amount {
    display: block;
    font-size: 1rem;
    font-weight: 700;
}

.monthly-card.income .monthly-amount {
    color: var(--toss-blue);
}

.monthly-card.expense .monthly-amount {
    color: #F04452;
}

.monthly-card.balance .monthly-amount {
    color: var(--text-primary);
}

/* ============================================
   Weekly Summary (주간 요약)
   ============================================ */
.weekly-summary {
    text-align: center;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--toss-blue) 0%, #1E6FE6 100%);
    border-radius: var(--radius-lg);
    color: white;
}

.weekly-amount {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.weekly-comparison {
    display: flex;
    justify-content: center;
}

.comparison-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.comparison-badge.up {
    background: rgba(240, 68, 82, 0.2);
    color: #FFB3B8;
}

.comparison-badge.down {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.comparison-badge.neutral {
    background: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
    padding: var(--spacing-md);
    padding-bottom: 100px;
}

/* ============================================
   Summary Card (이번 주 요약)
   ============================================ */
.summary-card {
    background: linear-gradient(135deg, var(--toss-blue) 0%, #1E6FE6 100%);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    color: white;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-lg);
}

.summary-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
}

.summary-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

.week-badge {
    background: rgba(255, 255, 255, 0.2);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.summary-amount {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.5px;
}

.summary-comparison {
    display: flex;
    align-items: center;
}

.comparison-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.comparison-badge.up {
    background: rgba(240, 68, 82, 0.2);
    color: #FFB3B8;
}

.comparison-badge.down {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.comparison-badge.neutral {
    background: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   Card (일반 카드)
   ============================================ */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.card-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ============================================
   Category Chart & List
   ============================================ */
.category-chart-container {
    height: 180px;
    margin-bottom: var(--spacing-md);
    display: flex;
    justify-content: center;
}

.category-chart-container canvas {
    max-width: 180px;
    max-height: 180px;
}

.category-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.category-item {
    border-bottom: 1px solid #F0F1F4;
}

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

.category-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    cursor: pointer;
    transition: background 0.2s ease;
}

.category-header:hover {
    background: var(--bg-hover);
    margin: 0 calc(-1 * var(--spacing-lg));
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
}

.category-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.category-info {
    flex: 1;
    min-width: 0;
}

.category-name-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.category-name {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.category-count {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    background: var(--bg-primary);
    padding: 2px 8px;
    border-radius: 10px;
}

.category-bar-container {
    height: 6px;
    background: var(--bg-primary);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 6px;
}

.category-bar {
    height: 100%;
    border-radius: 3px;
    transition: width 0.5s ease;
}

.category-values {
    text-align: right;
    min-width: 80px;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
}

.category-amount {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}

.category-percent {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.category-arrow {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    transition: transform 0.3s ease;
    margin-left: var(--spacing-sm);
}

.category-item.expanded .category-arrow {
    transform: rotate(180deg);
}

/* 카테고리 상세 내역 (드롭다운) */
.category-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    background: var(--bg-primary);
    margin: 0 calc(-1 * var(--spacing-lg));
    padding: 0 var(--spacing-lg);
}

.category-item.expanded .category-details {
    max-height: 500px;
    padding: var(--spacing-md) var(--spacing-lg);
}

.detail-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid #E8E8E8;
}

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

.detail-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.detail-note {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

.detail-date {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.detail-amount {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ============================================
   Chart Container
   ============================================ */
.chart-container {
    height: 200px;
    position: relative;
}

/* ============================================
   Transaction List
   ============================================ */
.transaction-list {
    display: flex;
    flex-direction: column;
}

.transaction-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid #F0F1F4;
}

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

.transaction-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    background: var(--bg-primary);
}

.transaction-info {
    flex: 1;
    min-width: 0;
}

.transaction-note {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.transaction-date {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.transaction-amount {
    font-size: 1rem;
    font-weight: 700;
    text-align: right;
}

.transaction-amount.expense {
    color: var(--text-primary);
}

.transaction-amount.income {
    color: var(--toss-blue);
}

/* ============================================
   Week Selector
   ============================================ */
.week-selector {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-top: 1px solid #EAEEF3;
    padding: var(--spacing-md);
    z-index: 100;
}

.week-tabs {
    display: flex;
    gap: var(--spacing-sm);
    max-width: 480px;
    margin: 0 auto;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.week-tabs::-webkit-scrollbar {
    display: none;
}

.week-tab {
    flex: 1;
    min-width: 70px;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    font-family: 'Pretendard', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.week-tab:hover {
    background: var(--bg-hover);
}

.week-tab.active {
    background: var(--toss-blue);
    color: white;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    text-align: center;
    padding: var(--spacing-lg);
    padding-bottom: 100px;
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

/* ============================================
   Toast
   ============================================ */
#toast-container {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
}

.toast {
    padding: 14px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    color: white;
    box-shadow: var(--shadow-lg);
    animation: toastIn 0.3s ease;
}

.toast.success {
    background: #1A1A1A;
}

.toast.warning {
    background: #FF9500;
}

.toast.error {
    background: #F04452;
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

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

@keyframes toastOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }

    to {
        opacity: 0;
        transform: translateY(-10px);
    }
}

/* ============================================
   Empty State
   ============================================ */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.empty-state-text {
    font-size: 0.95rem;
}

/* ============================================
   Responsive
   ============================================ */
@media (min-width: 481px) {
    .app {
        border-left: 1px solid #EAEEF3;
        border-right: 1px solid #EAEEF3;
    }

    .week-selector {
        left: 50%;
        transform: translateX(-50%);
        max-width: 480px;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    }
}