/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Pretendard:wght@100;200;300;400;500;600;700;800;900&display=swap');

/* Variables */
:root {
    /* Colors */
    --primary-color: #0f172a;
    /* Slate 900 */
    --primary-light: #1e293b;
    /* Slate 800 */
    --secondary-color: #3b82f6;
    /* Blue 500 */
    --secondary-hover: #2563eb;
    /* Blue 600 */
    --accent-color: #06b6d4;
    /* Cyan 500 */

    --bg-color: #f8fafc;
    /* Slate 50 */
    --bg-card: #ffffff;
    --text-main: #1e293b;
    --text-sub: #64748b;
    --text-white: #ffffff;

    --border-color: #e2e8f0;

    /* Spacing */
    --container-width: 1200px;
    --header-height: 80px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    /* Transitions */
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Layout Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

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

.mb-1 {
    margin-bottom: 1rem;
}

.mb-2 {
    margin-bottom: 2rem;
}

.mb-3 {
    margin-bottom: 3rem;
}

/* Header */
.header {
    height: var(--header-height);
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo span {
    color: var(--secondary-color);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.header-remote-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: #ef4444;
    color: white !important;
    padding: 8px 14px;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 700;
    transition: var(--transition);
    white-space: nowrap;
    text-decoration: none;
}

.header-remote-btn:hover {
    background-color: #dc2626;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-link {
    font-weight: 500;
    color: var(--text-main);
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--secondary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: var(--transition);
}

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

/* Remote Support Button Removed from Nav */
.nav-btn-remote::after {
    display: none;
    /* 밑줄 효과 제거 */
}

.mobile-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    background: none;
    border: none;
}

/* Hero Section */
.hero {
    margin-top: var(--header-height);
    height: 600px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--text-white);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 70% 50%, rgba(59, 130, 246, 0.2), transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #cbd5e1;
    margin-bottom: 40px;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    margin-left: 10px;
}

.btn-outline:hover {
    border-color: white;
    background-color: rgba(255, 255, 255, 0.1);
}

.btn-danger {
    background-color: #ef4444;
    color: white;
    font-weight: 700;
}

.btn-danger:hover {
    background-color: #dc2626;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
    color: white;
}

/* Features/Services Section */
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary-color);
}

.card-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.card-desc {
    color: var(--text-sub);
}

/* Product Section (Home Preview) */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.product-img {
    height: 200px;
    background-color: #ddd;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
}

.product-info {
    padding: 20px;
}

.product-badge {
    display: inline-block;
    padding: 4px 12px;
    background-color: #dbeafe;
    color: var(--secondary-color);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.product-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.product-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
}

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: #94a3b8;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h3 {
    color: white;
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col a:hover {
    color: var(--secondary-color);
}

.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Contact Info List alignment */
.info-list {
    list-style: none;
    padding: 0;
}

.info-list li {
    display: flex;
    margin-bottom: 12px;
    align-items: flex-start;
    line-height: 1.6;
}

.info-list li strong {
    min-width: 110px;
    display: inline-block;
    color: var(--primary-color);
}

.info-list li span {
    flex: 1;
    color: var(--text-main);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .mobile-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        transform: translateY(-150%);
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    /* 모바일에서 로고와 원격지원 버튼 조정 */
    .header-remote-btn {
        padding: 6px 10px;
        font-size: 0.85rem;
        gap: 3px;
    }

    .logo {
        font-size: 1.3rem;
    }

    .header-left {
        gap: 10px;
    }
}

/* Remote Support Image Button */
.remote-img-btn {
    height: 50px;
    /* 요청하신 대로 반으로 축소 (100px -> 50px) */
    width: auto;
    transition: var(--transition);
    display: block;
    position: relative;

    /* 배경 및 테두리 강제 제거 */
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;

    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.remote-img-btn:hover {
    transform: scale(1.1);
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.15));
}

@media (max-width: 768px) {
    .remote-img-btn {
        height: 35px;
        /* 모바일 크기 조정 */
    }
}

transform: scale(1.1);
/* 크기가 이미 크므로 scale로 확대 */
filter: brightness(1.1);
}

@media (max-width: 768px) {
    .remote-img-btn {
        height: 100px;
    }
}