/* ============================================================
   더높이 법률사무소 — Design Tokens & Components
   design-tokens.css  v1.0
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700;900&family=Crimson+Text:ital,wght@0,400;0,600;0,700;1,400&family=Noto+Serif+KR:wght@300;400;500;600;700;900&family=Noto+Sans+KR:wght@300;400;500;600;700&display=swap');

/* ============================
   1. TOKENS (Variables)
   ============================ */
:root {
    /* Colors */
    --navy: #0a1f44;
    --dark-navy: #050f24;
    --primary: #3BA4D8;
    --primary-light: #5CB8E6;
    --light-gold: #e8f4f9;
    --cream: #faf8f3;
    --gray: #4a5568;
    --light-gray: #e8e8e8;
    --white: #ffffff;

    /* Typography */
    --font-serif: 'Noto Serif KR', serif;
    --font-sans: 'Noto Sans KR', sans-serif;
    --font-display-en: 'Playfair Display', serif;
    --font-body-en: 'Crimson Text', serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;

    /* Layout */
    --max-width: 1400px;
    --content-width: 1200px;
    --page-padding: 2rem;
    --header-height: 90px;
    --header-height-scrolled: 75px;

    /* Border Radius */
    --radius-sm: 6px;      /* 뱃지, 작은 요소 */
    --radius-md: 8px;      /* 버튼, 인풋 */
    --radius-lg: 12px;     /* 기능카드, 공지카드 */
    --radius-xl: 16px;     /* 멤버카드, 수행사례 */

    /* Shadows */
    --shadow-sm: 0 4px 16px rgba(10, 31, 68, 0.06);
    --shadow-md: 0 8px 32px rgba(10, 31, 68, 0.08);
    --shadow-lg: 0 16px 48px rgba(10, 31, 68, 0.12);
    --shadow-header: 0 4px 24px rgba(10, 31, 68, 0.08);
    --shadow-cta: 0 8px 24px rgba(59, 164, 216, 0.3);

    /* Transitions */
    --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.3s ease;
    --transition-medium: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}


/* ============================
   2. RESET & BASE
   ============================ */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: var(--font-sans);
    background: var(--cream);
    color: var(--navy);
    line-height: 1.6;
}


/* ============================
   3. GRADIENTS (배경용 클래스)
   ============================ */

/* Hero, 다크 섹션 배경 */
.bg-hero {
    background: linear-gradient(135deg, var(--dark-navy) 0%, var(--navy) 50%, #1a3a6e 100%);
}

/* Footer, 사이드바 배경 */
.bg-footer {
    background: linear-gradient(135deg, var(--dark-navy) 0%, var(--navy) 100%);
}

/* CTA 버튼 배경 */
.bg-cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
}

/* 뱃지, 아이콘 배경 */
.bg-badge {
    background: linear-gradient(135deg, var(--primary), var(--light-gold));
}

/* 섹션 타이틀 하단 언더라인 */
.underline-primary {
    background: linear-gradient(90deg, var(--primary), transparent);
}

/* 은은한 빛 오버레이 (Hero/Footer 위에 ::before 또는 별도 div로 사용) */
.radial-overlay {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(59, 164, 216, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(59, 164, 216, 0.1) 0%, transparent 50%);
    pointer-events: none;
}


/* ============================
   4. TYPOGRAPHY
   ============================ */

/* 제목 공통 — serif */
.hero-title {
    font-family: var(--font-serif);
    font-size: 4rem;
    font-weight: 900;
    line-height: 1.2;
    letter-spacing: -1px;
    color: var(--navy);
}

.page-title {
    font-family: var(--font-serif);
    font-size: 3rem;
    font-weight: 700;
    color: var(--navy);
}

.section-title {
    font-family: var(--font-serif);
    font-size: 2.75rem;
    font-weight: 700;
    text-align: center;
    color: var(--navy);
}

/* 섹션 타이틀 하단 바 */
.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), transparent);
    margin: 1rem auto 0;
}

.card-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--navy);
}

/* 본문 공통 — sans-serif */
.body-text {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    color: var(--gray);
    line-height: 1.7;
}

/* 네비게이션 링크 */
.nav-link {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--navy);
    letter-spacing: 0.3px;
    text-decoration: none;
    position: relative;
    transition: var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--light-gold));
    transition: var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link.active {
    color: var(--primary);
    font-weight: 600;
}


/* ============================
   5. LAYOUT
   ============================ */

/* SPA 페이지 래퍼 */
.page { display: none; }
.page.active {
    display: block;
    animation: fadeIn 0.6s ease-out;
}

/* 콘텐츠 페이지 래퍼 */
.content-page {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: var(--space-2xl) var(--page-padding);
}

/* 페이지 헤더 */
.page-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-lg);
    border-bottom: 2px solid var(--light-gold);
}

.page-description {
    font-family: var(--font-sans);
    color: var(--gray);
    margin-top: var(--space-sm);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 그리드 패턴 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
}

.members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
}

.notices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}


/* ============================
   6. COMPONENTS — Buttons
   ============================ */

/* Primary CTA 버튼 */
.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--white);
    padding: 1.25rem 2.5rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.05rem;
    border: none;
    cursor: pointer;
    transition: var(--transition-medium);
    box-shadow: var(--shadow-cta);
}

.hero-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(59, 164, 216, 0.4);
}

/* Outline 버튼 */
.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: transparent;
    color: var(--primary);
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    border: 2px solid var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition-medium);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
}


/* ============================
   7. COMPONENTS — Cards
   ============================ */

/* 기능 카드 (Features) */
.feature-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    border: 1px solid var(--light-gray);
    transition: var(--transition-medium);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--light-gold));
    border-radius: var(--radius-lg);
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.feature-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: var(--space-sm);
}

/* 공지사항 카드 */
.notice-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--light-gray);
    box-shadow: var(--shadow-sm);
    transition: all 0.25s ease;
    overflow: hidden;
}

.notice-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.08);
    border-color: var(--primary);
}

/* 수행사례 카드 */
.case-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
    border-top: 4px solid var(--primary);
    transition: var(--transition-medium);
}

.case-card:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.case-category {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--light-gold));
    color: var(--navy);
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}


/* ============================
   8. COMPONENTS — Form (다크 배경용)
   ============================ */
.dark-input {
    width: 100%;
    padding: 1rem 3rem 1rem 1.25rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    color: var(--white);
    font-size: 1rem;
    font-family: var(--font-sans);
    outline: none;
    transition: var(--transition-fast);
}

.dark-input:focus {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.15);
}

.dark-input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}


/* ============================
   9. ANIMATIONS
   ============================ */
@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Hero 순차 등장용 유틸리티 */
.animate-hero-1 { animation: fadeInUp 1s ease-out 0s backwards; }
.animate-hero-2 { animation: fadeInUp 1s ease-out 0.2s backwards; }
.animate-hero-3 { animation: fadeInUp 1s ease-out 0.4s backwards; }


/* ============================
   10. MOBILE SIDEBAR
   ============================ */
.mobile-sidebar {
    position: fixed;
    top: 0;
    right: -100%;
    width: 320px;
    height: 100vh;
    background: linear-gradient(135deg, var(--dark-navy) 0%, var(--navy) 100%);
    z-index: 1000;
    transition: var(--transition-medium);
    overflow-y: auto;
}

.mobile-sidebar.open {
    right: 0;
}

.sidebar-link {
    display: block;
    padding: 1rem 1.5rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    border-left: 4px solid transparent;
    transition: var(--transition-fast);
}

.sidebar-link:hover,
.sidebar-link.active {
    border-left-color: var(--primary);
    padding-left: 2rem;
    color: var(--white);
}


/* ============================
   11. RESPONSIVE
   ============================ */
@media (min-width: 768px) {
    .desktop-nav { display: flex; }
    .mobile-menu-btn { display: none; }
}

@media (max-width: 767px) {
    .hero-title { font-size: 2.5rem; }
    .section-title { font-size: 2rem; }
    .page-title { font-size: 2.25rem; }
    .footer-content { grid-template-columns: 1fr; gap: 2.5rem; }
    .members-grid,
    .features-grid { grid-template-columns: 1fr; }
}