/* ===== 모바일용 스타일 (767px 이하) ===== */

/* ===== 컨테이너 설정 ===== */
.container {
    max-width: 100%;
    padding: 0 var(--spacing-md);
}

/* ===== 헤더 스타일 ===== */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md) 0;
    gap: var(--spacing-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-white);
    font-size: var(--font-lg);
    font-weight: var(--font-bold);
    text-decoration: none;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
    text-decoration: none;
}

.logo i {
    font-size: var(--font-xl);
    color: var(--accent-color);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

/* ===== 검색 컨테이너 ===== */
.search-container {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 25px;
    padding: var(--spacing-sm);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    width: 100%;
    max-width: 100%;
    transition: var(--transition);
}

.search-container:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.search-container:focus-within {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.2);
}

.search-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-white);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-base);
    font-weight: var(--font-medium);
}

.search-input::placeholder {
    color: rgba(255, 255, 255, 0.7);
    font-weight: var(--font-normal);
}

.search-btn {
    background: var(--accent-color);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    cursor: pointer;
    transition: var(--transition);
    font-size: var(--font-sm);
    flex-shrink: 0;
}

.search-btn:hover {
    background: var(--secondary-color);
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

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

/* ===== 네비게이션 메뉴 ===== */
.nav-menu {
    display: flex;
    gap: var(--spacing-sm);
    width: 100%;
    justify-content: center;
}

.nav-item {
    color: var(--text-white);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-weight: var(--font-medium);
    font-size: var(--font-sm);
    position: relative;
    overflow: hidden;
    flex: 1;
    text-align: center;
}

.nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition);
}

.nav-item:hover::before {
    left: 100%;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
}

/* ===== 메인 컨텐츠 ===== */
.main-content {
    padding: var(--spacing-xl) 0;
    padding-bottom: 160px; /* 모바일에서 티커 높이만큼 여백 */
}

.welcome-section {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl) 0;
    position: relative;
}

.welcome-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-color), var(--secondary-color));
    border-radius: 2px;
}

.welcome-section h1 {
    font-size: var(--font-2xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.3;
}

.welcome-section p {
    font-size: var(--font-base);
    color: var(--text-secondary);
    line-height: 1.6;
    font-weight: var(--font-normal);
}

/* ===== 카테고리 그리드 ===== */
.categories-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.category-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 140px;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--secondary-color));
    transform: scaleX(0);
    transition: var(--transition);
    transform-origin: left;
}

.category-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(49, 130, 206, 0.05), rgba(45, 90, 135, 0.05));
    opacity: 0;
    transition: var(--transition);
}

.category-card:hover::before,
.category-card:active::before {
    transform: scaleX(1);
}

.category-card:hover::after,
.category-card:active::after {
    opacity: 1;
}

.category-card:hover,
.category-card:active {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.category-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-lg);
    color: var(--text-white);
    background: linear-gradient(135deg, var(--accent-color), var(--secondary-color));
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    z-index: 1;
    flex-shrink: 0;
}

.category-card:hover .category-icon,
.category-card:active .category-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-md);
}

.category-card h3 {
    font-size: var(--font-base);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    position: relative;
    z-index: 1;
    line-height: 1.3;
}

.category-card p {
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
    flex: 1;
    font-size: var(--font-sm);
    position: relative;
    z-index: 1;
}

.category-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-color), var(--secondary-color));
    color: var(--text-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 15px;
    font-size: var(--font-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    align-self: flex-start;
    position: relative;
    z-index: 1;
    box-shadow: var(--shadow-sm);
}

/* ===== 카테고리별 특별 스타일 ===== */
.overseas-briefing .category-icon { 
    background: linear-gradient(135deg, #667eea, #764ba2); 
}

.investment-news .category-icon { 
    background: linear-gradient(135deg, #f093fb, #f5576c); 
}

.analyst-reports .category-icon { 
    background: linear-gradient(135deg, #4facfe, #00f2fe); 
}

.daily-disclosure .category-icon { 
    background: linear-gradient(135deg, #43e97b, #38f9d7); 
}

.investment-terms .category-icon { 
    background: linear-gradient(135deg, #fa709a, #fee140); 
}

.chart-guide .category-icon { 
    background: linear-gradient(135deg, #a8edea, #fed6e3); 
}

.life-investment .category-icon { 
    background: linear-gradient(135deg, #ff9a9e, #fecfef); 
}

.market-calendar .category-icon { 
    background: linear-gradient(135deg, #a18cd1, #fbc2eb); 
}

/* ===== 모바일 티커 오버라이드 ===== */
.ticker-container {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    text-align: center;
    padding: var(--spacing-sm) var(--spacing-md);
}

.ticker-label {
    font-size: var(--font-xs);
    gap: var(--spacing-xs);
}

.ticker-label .ticker-text {
    display: none; /* 모바일에서는 텍스트 숨김 */
}

.ticker-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    width: 100%;
    max-width: 100%;
    overflow: visible;
}

.ticker-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-sm);
    min-height: 50px;
    justify-content: center;
    min-width: auto;
    gap: 2px;
}

.ticker-name {
    font-size: 10px;
    margin-bottom: 2px;
}

.ticker-value {
    font-size: var(--font-xs);
    margin-bottom: 2px;
}

.ticker-change {
    font-size: 9px;
    padding: 1px 4px;
    line-height: 1.1;
}

.ticker-time {
    font-size: 9px;
    margin-top: var(--spacing-xs);
}

/* 메인 컨텐츠 하단 여백 조정 */
.main-content {
    padding-bottom: 100px; /* 모바일에서 티커 높이만큼 여백 */
}

/* ===== 애니메이션 ===== */
.category-card {
    animation: fadeInUp 0.5s ease-out;
}

.category-card:nth-child(1) { animation-delay: 0.05s; }
.category-card:nth-child(2) { animation-delay: 0.1s; }
.category-card:nth-child(3) { animation-delay: 0.15s; }
.category-card:nth-child(4) { animation-delay: 0.2s; }
.category-card:nth-child(5) { animation-delay: 0.25s; }
.category-card:nth-child(6) { animation-delay: 0.3s; }
.category-card:nth-child(7) { animation-delay: 0.35s; }
.category-card:nth-child(8) { animation-delay: 0.4s; }

/* ===== 스크롤 효과 ===== */
.header.scrolled {
    background: linear-gradient(135deg, rgba(26, 54, 93, 0.95) 0%, rgba(45, 90, 135, 0.95) 100%);
    backdrop-filter: blur(20px);
}

/* ===== 터치 최적화 ===== */
@media (hover: none) and (pointer: coarse) {
    .category-card:active .category-badge {
        transform: scale(1.05);
        box-shadow: var(--shadow-md);
    }
    
    .ticker-item:active .ticker-value {
        color: var(--accent-color);
    }
    
    /* 터치 디바이스에서 호버 효과 제거 */
    .category-card:hover {
        transform: none;
        box-shadow: var(--shadow-sm);
        border-color: var(--border-color);
    }
    
    .category-card:hover .category-icon {
        transform: none;
        box-shadow: var(--shadow-sm);
    }
}

/* ===== 초소형 모바일 (480px 이하) ===== */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .welcome-section h1 {
        font-size: var(--font-xl);
    }
    
    .welcome-section p {
        font-size: var(--font-sm);
    }
    
    .category-card {
        padding: var(--spacing-md);
        min-height: 120px;
    }
    
    .category-icon {
        width: 40px;
        height: 40px;
        font-size: var(--font-base);
    }
    
    .category-card h3 {
        font-size: var(--font-sm);
    }
    
    .category-card p {
        font-size: var(--font-xs);
    }
    
    .ticker-label {
        font-size: var(--font-xs);
    }
    
    .ticker-item {
        padding: var(--spacing-xs);
        min-height: 50px;
    }
    
    .ticker-value {
        font-size: var(--font-xs);
    }
    
    .ticker-change {
        font-size: 10px;
    }
}

/* ===== 가로 모드 모바일 최적화 ===== */
@media (max-width: 767px) and (orientation: landscape) {
    .header-content {
        flex-direction: row;
        justify-content: space-between;
        padding: var(--spacing-sm) 0;
    }
    
    .search-container {
        max-width: 250px;
        margin-top: 0;
    }
    
    .nav-menu {
        gap: var(--spacing-xs);
    }
    
    .nav-item {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-xs);
    }
    
    .main-content {
        padding: var(--spacing-lg) 0;
        padding-bottom: 100px;
    }
    
    .welcome-section {
        padding: var(--spacing-md) 0;
        margin-bottom: var(--spacing-lg);
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .ticker-content {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .ticker-container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

/* ===== 접근성 향상 ===== */
@media (prefers-reduced-motion: reduce) {
    .category-card {
        animation: none;
    }
    
    .category-card:hover {
        transform: none;
    }
    
    .category-card:hover .category-icon {
        transform: none;
    }
}

/* ===== 다크 모드 지원 (시스템 설정 기반) ===== */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-secondary: #1a202c;
        --bg-card: #2d3748;
        --text-primary: #f7fafc;
        --text-secondary: #e2e8f0;
        --border-color: #4a5568;
    }
}

/* ===== 저작권 섹션 모바일 스타일 ===== */
.copyright-content {
    flex-direction: column;
    text-align: center;
    gap: 1.5rem;
}

.copyright-links {
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.copyright-links a {
    font-size: 0.8rem;
}

.copyright-text {
    font-size: 0.75rem;
}

.company-info {
    font-size: 0.7rem;
}

/* ===== 스크롤업 버튼 모바일 스타일 ===== */
.scroll-to-top {
    width: 45px;
    height: 45px;
    bottom: 130px; /* 모바일 티커 높이에 맞춤 */
    right: 15px;
    font-size: 1.1rem;
}