/* ========================================
   알토컴퍼니 홈페이지 - 공통 스타일
   ======================================== */

:root {
    /* 색상 */
    --primary: #001D51;
    --bg-light: #F5F1E8;
    --bg-lighter: #FBF9F3;
    --accent: #EEE8DA;
    --wood: #E8DFC8;
    --dark-gray: #333333;
    --light-gray: #666666;

    /* 타이포그래피 */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
    --font-title: 28px;
    --font-subtitle: 22px;
    --font-body: 16px;
    --line-height: 1.6;

    /* 간격 */
    --spacing: 16px;
    --max-width: 1200px;
    --gap: 24px;

    /* 반응형 */
    --bp-mobile: 768px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-body);
    line-height: var(--line-height);
    color: var(--dark-gray);
    background-color: var(--bg-light);
}

/* ========================================
   컨테이너 & 레이아웃
   ======================================== */

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing);
}

section {
    padding: calc(var(--spacing) * 4) 0;
}

/* ========================================
   헤더 & 네비게이션
   ======================================== */

header {
    background-color: white;
    box-shadow: 0 2px 8px rgba(0, 29, 81, 0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing) var(--spacing);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 16px;
    font-weight: bold;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-text strong {
    font-size: 16px;
    font-weight: 700;
}

.logo-text small {
    font-size: 11px;
    font-weight: 400;
    color: var(--light-gray);
}

.logo:hover {
    opacity: 0.8;
}

@media (max-width: var(--bp-mobile)) {
    .logo {
        gap: 8px;
    }

    .logo img {
        height: 32px;
    }

    .logo-text strong {
        font-size: 14px;
    }

    .logo-text small {
        font-size: 10px;
    }
}

nav ul {
    list-style: none;
    display: flex;
    gap: var(--gap);
}

nav a {
    color: var(--dark-gray);
    text-decoration: none;
    font-size: 15px;
    padding: 8px 0;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

nav a:hover,
nav a.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* 모바일 메뉴 토글 (추후 JavaScript 추가) */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--primary);
}

@media (max-width: var(--bp-mobile)) {
    nav ul {
        display: none;
        flex-direction: column;
        gap: var(--spacing);
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: white;
        padding: var(--spacing);
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    }

    nav ul.active {
        display: flex;
    }

    .menu-toggle {
        display: block;
    }
}
/* ========================================
   푸터
   ======================================== */

footer {
    background-color: var(--primary);
    color: white;
    padding: calc(var(--spacing) * 5) var(--spacing);
    margin-top: calc(var(--spacing) * 4);
    border-top: 3px solid var(--wood);
}

footer .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: calc(var(--gap) * 2);
}

footer h4 {
    font-size: 18px;
    margin-bottom: calc(var(--spacing) * 1.5);
    color: var(--wood);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

footer p,
footer a {
    font-size: 15px;
    margin-bottom: 12px;
    line-height: 1.8;
}

footer p {
    color: rgba(255, 255, 255, 0.85);
}

footer a {
    color: var(--bg-light);
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

footer a:hover {
    color: var(--wood);
    transform: translateX(4px);
}

footer strong {
    color: white;
    display: block;
    margin-bottom: 8px;
    font-size: 16px;
}

.footer-bottom {
    grid-column: 1 / -1;
    text-align: center;
    padding-top: calc(var(--spacing) * 2);
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin-top: var(--gap);
}

/* 푸터 섹션 */
.footer-section {
    display: flex;
    flex-direction: column;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: calc(var(--spacing) * 1.5);
    color: var(--wood);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 0;
}

/* 연락처 아이템 */
.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    color: rgba(255, 255, 255, 0.85);
    font-size: 15px;
    transition: all 0.3s ease;
}

.contact-item:hover {
    color: var(--wood);
    transform: translateX(4px);
}

/* 연락처 아이콘 */
.contact-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--wood);
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: all 0.3s ease;
}

.contact-item:hover .contact-icon {
    color: white;
    transform: scale(1.1);
}

/* 빠른 링크 */
.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-links li {
    margin: 0;
    padding: 0;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    font-size: 15px;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
}

.footer-links a::before {
    content: "→";
    margin-right: 0;
    opacity: 0;
    transition: all 0.3s ease;
    position: absolute;
    left: -12px;
}

.footer-links a:hover {
    color: var(--wood);
    padding-left: 12px;
}

.footer-links a:hover::before {
    opacity: 1;
}

/* 모바일 반응형 */
@media (max-width: var(--bp-mobile)) {
    footer {
        padding: calc(var(--spacing) * 3) var(--spacing);
    }
    
    footer .container {
        grid-template-columns: 1fr;
    }
    
    footer h4 {
        font-size: 16px;
    }

    .footer-section {
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding-bottom: var(--spacing);
        margin-bottom: var(--spacing);
    }

    .footer-section:last-child {
        border-bottom: none;
    }

    .contact-icon {
        width: 18px;
        height: 18px;
    }
}

/* ========================================
   타이포그래피
   ======================================== */

h1 {
    font-size: var(--font-title);
    color: var(--primary);
    margin-bottom: var(--spacing);
    line-height: 1.3;
}

h2 {
    font-size: var(--font-subtitle);
    color: var(--primary);
    margin-bottom: calc(var(--spacing) * 1.5);
    line-height: 1.3;
}

h3 {
    font-size: 20px;
    color: var(--primary);
    margin-bottom: var(--spacing);
}

h4 {
    font-size: 18px;
    color: var(--dark-gray);
    margin-bottom: 8px;
}

p {
    margin-bottom: var(--spacing);
    color: var(--light-gray);
}

strong {
    color: var(--dark-gray);
    font-weight: 600;
}

/* ========================================
   버튼 & 링크
   ======================================== */

.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 29, 81, 0.2);
}

.btn-primary:hover {
    background-color: #00142f;
    box-shadow: 0 8px 24px rgba(0, 29, 81, 0.4);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--wood);
    color: white;
    box-shadow: 0 4px 12px rgba(232, 223, 200, 0.2);
}

.btn-secondary:hover {
    background-color: #d9cfb9;
    color: var(--primary);
    box-shadow: 0 8px 24px rgba(232, 223, 200, 0.4);
    transform: translateY(-2px);
}

.btn-outline {
    border: 2px solid var(--primary);
    color: var(--primary);
    background-color: transparent;
}

.btn-outline:hover {
    background-color: var(--primary);
    color: white;
}
/* 히어로 버튼 그룹 */
.hero-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    max-width: 900px;
    margin: 0 auto;
    margin-top: calc(var(--spacing) * 3);
}

.hero-buttons .btn {
    padding: 16px 32px;
    font-size: 16px;
    border-radius: 6px;
}

.hero-buttons .btn-primary:hover,
.hero-buttons .btn-secondary:hover,
.hero-buttons .btn-outline:hover {
    transform: translateY(-3px);
}

@media (max-width: var(--bp-mobile)) {
    .hero-buttons {
        grid-template-columns: 1fr;
        gap: 12px;
        margin-top: calc(var(--spacing) * 2);
    }

    .hero-buttons .btn {
        padding: 14px 24px;
        font-size: 15px;
    }
}
/* ========================================
   히어로 섹션
   ======================================== */

.hero {
    background: linear-gradient(135deg, var(--primary) 0%, #002d6a 100%);
    background-size: cover;
    background-position: center;
    color: white;
    text-align: center;
    padding: calc(var(--spacing) * 10) var(--spacing);
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* 배경 이미지 오버레이 (어두운 반투명) */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 29, 81, 0.35);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
    max-width: 700px;
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: 12px;
    line-height: 1.2;
    color: white;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 22px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.98);
    margin-bottom: 8px;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.hero p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 16px;
    margin-bottom: calc(var(--spacing) * 3);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.hero .btn {
    margin: 0 8px;
    font-size: 16px;
}

@media (max-width: var(--bp-mobile)) {
    .hero {
        min-height: 450px;
        padding: calc(var(--spacing) * 5) var(--spacing);
    }

    .hero .container {
        max-width: 100%;
    }

    .hero-title {
        font-size: 32px;
        margin-bottom: 8px;
    }

    .hero-subtitle {
        font-size: 16px;
        margin-bottom: 12px;
    }

    .hero p {
        font-size: 14px;
        margin-bottom: calc(var(--spacing) * 2);
    }

    .hero .btn {
        display: inline-block;
        margin: 6px;
        padding: 10px 24px;
        font-size: 14px;
    }
}

/* ========================================
   카드 레이아웃
   ======================================== */

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--gap);
    margin: var(--gap) 0;
}

.card {
    background-color: var(--bg-lighter);
    border-radius: 8px;
    padding: calc(var(--spacing) * 2);
    border: 1px solid var(--accent);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 8px 24px rgba(0, 29, 81, 0.12);
    transform: translateY(-4px);
}

.card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 4px;
    margin-bottom: var(--spacing);
}

.card h3 {
    margin-bottom: 8px;
}

.card p {
    font-size: 14px;
    margin-bottom: var(--spacing);
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing);
    padding-top: var(--spacing);
    border-top: 1px solid var(--accent);
}

/* ========================================
   특징 리스트
   ======================================== */

.features-list {
    list-style: none;
}

.features-list li {
    padding: var(--spacing) 0;
    border-bottom: 1px solid var(--accent);
    display: flex;
    gap: var(--spacing);
}

.features-list li:last-child {
    border-bottom: none;
}

.features-list li::before {
    content: "✓";
    color: var(--wood);
    font-weight: bold;
    font-size: 20px;
    flex-shrink: 0;
}

.features-list strong {
    display: block;
    margin-bottom: 4px;
}

/* ========================================
   폼 요소
   ======================================== */

.form-group {
    margin-bottom: var(--gap);
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-gray);
}

input,
textarea,
select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--accent);
    border-radius: 4px;
    font-family: var(--font-family);
    font-size: var(--font-body);
    transition: border-color 0.3s ease;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 29, 81, 0.08);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

/* ========================================
   테이블
   ======================================== */

table {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
    margin: var(--gap) 0;
}

th {
    background-color: var(--primary);
    color: white;
    padding: var(--spacing);
    text-align: left;
    font-weight: 600;
}

td {
    padding: var(--spacing);
    border-bottom: 1px solid var(--accent);
}

tr:hover {
    background-color: var(--bg-light);
}

/* ========================================
   필터 버튼
   ======================================== */

.filter-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: var(--gap);
}

.filter-btn {
    padding: 8px 16px;
    border: 2px solid var(--wood);
    background-color: transparent;
    color: var(--primary);
    border-radius: 24px;
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* ========================================
   유틸리티
   ======================================== */

.text-center {
    text-align: center;
}

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

.text-muted {
    color: var(--light-gray);
}

.mb-1 { margin-bottom: var(--spacing); }
.mb-2 { margin-bottom: calc(var(--spacing) * 2); }
.mb-3 { margin-bottom: calc(var(--spacing) * 3); }

.mt-1 { margin-top: var(--spacing); }
.mt-2 { margin-top: calc(var(--spacing) * 2); }
.mt-3 { margin-top: calc(var(--spacing) * 3); }

.highlight {
    background-color: var(--accent);
    padding: calc(var(--spacing) * 2);
    border-radius: 4px;
    border-left: 4px solid var(--wood);
}

.divider {
    height: 1px;
    background-color: var(--accent);
    margin: calc(var(--spacing) * 3) 0;
}

/* ========================================
   반응형 디자인
   ======================================== */

@media (max-width: var(--bp-mobile)) {
    :root {
        --font-title: 24px;
        --font-subtitle: 18px;
        --font-body: 15px;
        --spacing: 12px;
        --gap: 16px;
    }

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

    section {
        padding: calc(var(--spacing) * 3) 0;
    }

    h1 { font-size: 24px; }
    h2 { font-size: 18px; }
    h3 { font-size: 16px; }

    .cards {
        grid-template-columns: 1fr;
    }

    footer .container {
        grid-template-columns: 1fr;
    }

    table {
        font-size: 13px;
    }

    th, td {
        padding: 8px;
    }
}