/*
 * 현대적 프리미엄 디자인 CSS - 2026-2 Ultimate Edition
 * 기반: 2026-1.css + 참조css.txt 모든 클래스 완전 반영
 * 목표: Stripe, Vercel, Linear, Notion, Arc Browser 수준의 고급스러운 느낌
 * 특징:
 *   • Deep Glassmorphism + Soft Neumorphism + Vibrant Gradient
 *   • Micro-interactions & Hover Glow 효과 대폭 강화
 *   • Ultra-clean Typography + Perfect Spacing
 *   • 모바일에서 콘텐츠 최대 노출 + 극강의 세련미
 */

:root {
    /* 2026 프리미엄 팔레트 (Indigo + Violet + Soft Blue) */
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --primary-gradient-start: #6366f1;
    --primary-gradient-end: #a855f7;
    --primary-light: #e0e7ff;
    --primary-glow: 0 0 30px rgba(99, 102, 241, 0.4);

    --accent-color: #ec4899;
    --accent-light: #fce7f3;

    --dark-color: #0f172a;
    --gray-900: #1e2937;
    --gray-700: #334155;
    --gray-500: #64748b;
    --gray-300: #cbd5e1;
    --gray-100: #f1f5f9;
    --light-color: #ffffff;

    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-glass: rgba(255, 255, 255, 0.78);
    --border-color: rgba(148, 163, 184, 0.25);

    /* 그림자 - 고급스러운 Depth */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.06);
    --shadow-md: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.08);
    --shadow-lg: 0 25px 50px -12px rgba(99, 102, 241, 0.22);
    --shadow-inset: inset 0 2px 4px rgba(0,0,0,0.03);
    --shadow-glow: var(--primary-glow);

    /* 트랜지션 - 매우 부드럽게 */
    --transition-fast: all 0.18s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: all 0.32s cubic-bezier(0.4, 0.0, 0.2, 1);
    --transition-slow: all 0.55s cubic-bezier(0.34, 1.56, 0.64, 1);

    /* 라디우스 - 현대적이고 부드러움 */
    --radius-sm: 14px;
    --radius: 18px;
    --radius-lg: 26px;
    --radius-xl: 36px;

    /* 간격 시스템 */
    --spacing-xs: 0.4rem;
    --spacing-sm: 0.8rem;
    --spacing-md: 1.15rem;
    --spacing-lg: 1.75rem;
    --spacing-xl: 2.5rem;
}

/* ========== 기본 리셋 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Noto Sans KR', system-ui, -apple-system, sans-serif;
    font-size: 16px;
    line-height: 1.75;
    color: var(--dark-color);
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

/* 컨테이너 최대 활용 */
.container, .container-fluid,
.row, .col, [class*="col-"] {
    padding: 0 !important;
    margin: 0 !important;
    max-width: 100% !important;
}

/* ========== 헤더 (고급 Glassmorphism) ========== */
.sc-site-top,
.sc-site-header,
.blog-header {
    background: var(--bg-glass);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1200;
    padding: 0.85rem 1.25rem;
}

.blog-header-logo,
.sc-site-header .navbar-brand {
    font-size: 1.95rem;
    font-weight: 900;
    letter-spacing: -0.03em;
    background: linear-gradient(to right, var(--primary-gradient-start), var(--primary-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: var(--transition-slow);
}

.blog-header-logo:hover,
.sc-site-header .navbar-brand:hover {
    transform: scale(1.06) translateY(-2px);
}

/* 모바일 헤더 */
@media (max-width: 767px) {
    .sc-site-header, .blog-header {
        padding: 0.65rem 1rem;
    }
    .blog-header-logo, .sc-site-header .navbar-brand {
        font-size: 1.45rem;
    }
    .blog-header-logo img,
    .sc-site-header .navbar-brand img {
        width: 30px !important;
        height: auto;
    }
}

/* ========== 네비게이션 (Floating Modern Pill) ========== */
.sc-site-menu,
.navbar {
    background: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-sm) 0;
}

.navbar-nav {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    width: 100%;
    padding: 0 var(--spacing-sm);
}

.nav-link {
    padding: 0.8rem 1.5rem !important;
    border-radius: 9999px;
    background: var(--bg-primary);
    box-shadow: var(--shadow);
    font-weight: 600;
    color: var(--gray-700);
    transition: var(--transition-slow);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.nav-link:hover {
    transform: translateY(-7px) scale(1.04);
    background: linear-gradient(135deg, var(--primary-gradient-start), var(--primary-gradient-end));
    color: white !important;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.nav-link.active,
.nav-item.active .nav-link {
    background: linear-gradient(135deg, var(--primary-gradient-start), var(--primary-gradient-end));
    color: white !important;
    box-shadow: var(--shadow-glow);
}

/* ========== 페이지 타이틀 (Dramatic Hero) ========== */
.sc-site-title,
.jumbotron {
    position: relative;
    background: linear-gradient(135deg, #4f46e5 0%, #1e2937 100%);
    color: white;
    padding: 4.5rem 0 !important;
    overflow: hidden;
}

.sc-site-title::before,
.jumbotron::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 20%, rgba(167, 139, 250, 0.25), transparent 60%);
    z-index: 1;
}

.sc-site-title > *, .jumbotron > * {
    position: relative;
    z-index: 2;
}

.sc-site-title h1,
.jumbotron h1 {
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: -0.045em;
    line-height: 1.1;
}

/* ========== 스마트큐빅 & 아이콘 리스트 (Premium Card) ========== */
.sc-page-home-cubic,
.sc-cubic-search {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: var(--spacing-xl);
    margin: var(--spacing-lg) 0;
}

.sc-list-cubic {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    padding: var(--spacing-sm) 0;
}

.sc-item-cubic > .figure,
.sc-item-cubic > figure {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    background: var(--bg-primary);
    transition: var(--transition-slow);
}

.sc-item-cubic:hover > .figure {
    transform: translateY(-14px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.sc-item-cubic img,
.sc-item-cubic .figure-img,
.sc-item-cubic .app-img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    transition: var(--transition-slow);
}

.sc-item-cubic:hover img {
    transform: scale(1.08);
}

.sc-item-cubic .figure-caption,
.sc-item-cubic figcaption {
    padding: var(--spacing-md);
    font-weight: 700;
    color: var(--dark-color);
    text-align: center;
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
}

/* 아이콘 그리드 */
.icon-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--spacing-lg);
}

.icon-item,
.icon-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow), var(--shadow-inset);
    padding: var(--spacing-md);
    transition: var(--transition-slow);
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.icon-item:hover,
.icon-card:hover {
    transform: translateY(-16px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.icon-item img,
.icon-card img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: var(--radius) var(--radius) 0 0;
    margin-bottom: var(--spacing-sm);
}

.icon-item:hover img,
.icon-card:hover img {
    transform: scale(1.09);
    filter: brightness(1.05);
}

.icon-item h3,
.icon-card h3,
.icon-item .title,
.icon-card .title {
    font-size: 1.2rem;
    font-weight: 700;
    margin: var(--spacing-xs) 0 0.4rem;
}

.icon-item p,
.icon-card p,
.icon-item .description,
.icon-card .description {
    font-size: 0.95rem;
    color: var(--gray-700);
    line-height: 1.65;
    margin-top: auto;
}

/* ========== 게시판 & 리스트 ========== */
.sc-list-board {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.sc-list-board th {
    background: var(--gray-100);
    padding: 1.1rem 1rem;
    font-weight: 700;
}

.sc-list-board td {
    padding: 1.1rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.sc-list-board tbody tr:hover {
    background: var(--primary-light);
}

/* 블로그 리스트 */
.sc-list-blog {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--spacing-xl);
}

.sc-item-blog .card {
    height: 100%;
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

.sc-item-blog .card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

/* ========== 퍼머링크 페이지 ========== */
.sc-permalink-header {
    background: var(--dark-color);
    color: white;
    padding: 1.1rem 1.5rem;
    position: sticky;
    top: 0;
    z-index: 1300;
}

.sc-permalink-container {
    padding: var(--spacing-xl) 0;
}

.sc-permalink-info {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    margin-bottom: var(--spacing-xl);
}

.sc-permalink-menu-tab {
    display: flex;
    gap: var(--spacing-sm);
    border-bottom: 2px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.sc-permalink-menu-tab .nav-link {
    padding: 0.9rem 1.75rem;
    border-radius: var(--radius) var(--radius) 0 0;
    font-weight: 600;
    transition: var(--transition);
}

.sc-permalink-menu-tab .nav-link.active {
    background: var(--primary-light);
    color: var(--primary-color);
    border-bottom: 4px solid var(--primary-color);
}

/* ========== 버튼 & 마이페이지 ========== */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-gradient-start), var(--primary-gradient-end));
    border: none;
    box-shadow: var(--shadow), var(--shadow-glow);
    padding: 0.85rem 1.75rem;
    font-weight: 600;
    border-radius: var(--radius);
    transition: var(--transition-slow);
}

.btn-primary:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px -10px rgba(99, 102, 241, 0.35);
}

.sc-mypage-menu .btn-group > a {
    border-radius: var(--radius-lg);
    padding: 0.85rem 1.5rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.sc-mypage-menu .btn-group > a:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

/* ========== 푸터 ========== */
.sc-site-footer,
.blog-footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0;
    color: var(--gray-700);
    margin-top: auto;
}

/* ========== 반응형 (모바일 극강 최적화) ========== */
@media (max-width: 767px) {
    :root {
        --spacing-lg: 1.4rem;
        --spacing-md: 1rem;
    }
    
    .sc-list-cubic {
        grid-template-columns: repeat(auto-fill, minmax(100%, 1fr));
        gap: var(--spacing-md);
    }
    
    .icon-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .sc-site-title h1 {
        font-size: 2.35rem;
    }
    
    .icon-item, .icon-card {
        min-height: 340px;
    }
}

@media (max-width: 480px) {
    .icon-grid {
        grid-template-columns: 1fr;
    }
}

/* 부드러운 Floating 애니메이션 */
@keyframes premiumFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-9px); }
}

.card:hover,
.icon-item:hover,
.icon-card:hover,
.sc-item-cubic > .figure {
    animation: premiumFloat 5s ease-in-out infinite;
}