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

:root {
    /* Modern Professional Palette */
    --primary: #0F172A;       /* Slate 900 - Deep, professional dark blue */
    --primary-light: #1E293B; /* Slate 800 */
    --accent: #D4AF37;        /* Metallic Gold - Trust & Wealth */
    --accent-hover: #B59326;

    --bg-white: #FFFFFF;
    --bg-light: #F8FAFC;      /* Slate 50 - Very subtle cool gray */
    --bg-card: #FFFFFF;

    --text-main: #0F172A;
    --text-body: #475569;     /* Slate 600 */
    --text-light: #94A3B8;    /* Slate 400 */

    --border: #E2E8F0;

    --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);

    --container-width: 1140px;
    --header-height: 80px;

    --font-main: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-main);
    color: var(--text-main);
    line-height: 1.6;
    background-color: var(--bg-light);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    word-break: keep-all;
    overflow-wrap: break-word;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
}

ul {
    list-style: none;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ===== Typography Utility ===== */
.text-highlight {
    color: var(--accent);
    position: relative;
    display: inline-block;
    text-shadow: 0 0 30px rgba(212, 175, 55, 0.3);
}

.section-tag {
    display: block;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-body);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Navbar ===== */
.navbar {
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

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

.nav-brand h2 {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.02em;
    white-space: nowrap;
}

.nav-menu {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-menu a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-body);
}

.nav-menu a:hover {
    color: var(--primary);
}

.nav-cta {
    background-color: var(--primary);
    color: white !important;
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    font-weight: 600 !important;
    font-size: 0.9rem !important;
}

.nav-cta:hover {
    background-color: var(--primary-light);
    transform: translateY(-1px);
}

.mobile-menu-toggle {
    display: none;
    border: none;
    background: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--primary);
}

/* ===== Hero Section ===== */
.hero {
    padding-top: calc(var(--header-height) + 60px);
    padding-bottom: 80px;
    background: linear-gradient(135deg, var(--primary) 0%, #1a365d 50%, var(--primary-light) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(15, 23, 42, 0.02) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(212, 175, 55, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 40% 80%, rgba(15, 23, 42, 0.015) 0%, transparent 45%);
    pointer-events: none;
}

.hero::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%230F172A' fill-opacity='0.015'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
}

.hero-badge {
    display: inline-block;
    background-color: rgba(212, 175, 55, 0.2);
    color: var(--accent);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(212, 175, 55, 0.3);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
    color: white;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 2.5rem;
    font-weight: 400;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 4rem;
}

.btn-primary {
    background-color: var(--accent);
    color: var(--primary);
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.3);
}

.btn-outline {
    background-color: transparent;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: 600;
}

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

.hero-trust {
    display: inline-flex;
    align-items: center;
    gap: 2rem;
    padding: 1.5rem 3rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.trust-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.trust-num {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent);
}

.trust-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

.trust-divider {
    width: 1px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.2);
}

/* ===== Services Section ===== */
.services {
    padding: 100px 0;
    background: linear-gradient(180deg, #F8FAFC 0%, #F1F5F9 100%);
    position: relative;
}

.services::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.3), transparent);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.service-card {
    background: white;
    padding: 2.5rem;
    border-radius: 16px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(212, 175, 55, 0.2);
}

.service-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.service-icon {
    font-size: 2rem;
    background-color: var(--bg-light);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    white-space: nowrap;
}

.service-desc {
    color: var(--text-body);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.service-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-body);
}

.service-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

/* ===== Value Prop Section ===== */
.value-prop {
    background: linear-gradient(180deg, #F1F5F9 0%, #E2E8F0 100%);
    color: var(--primary);
    padding: 80px 0;
    text-align: center;
    border-top: 3px solid var(--accent);
    border-bottom: 3px solid var(--accent);
}

.value-content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.value-content p {
    font-size: 1.1rem;
    color: var(--text-body);
    max-width: 700px;
    margin: 0 auto;
}

/* ===== About Section ===== */
.about {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--primary) 0%, var(--primary-light) 100%);
    position: relative;
}

.about::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.3), transparent);
}

.about .section-tag {
    color: var(--accent);
}

.about-content-centered {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.about .about-title {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: white;
    text-align: center;
}

.about .about-desc {
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 2.5rem;
    font-size: 1.05rem;
    text-align: center;
}

.about .profile-box {
    text-align: left;
    max-width: 500px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 2rem;
    border-radius: 16px;
}

.about .profile-box h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--accent);
}

.about .career-list li {
    margin-bottom: 0.5rem;
    padding-left: 1rem;
    position: relative;
    color: rgba(255, 255, 255, 0.9);
}

.about .career-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    width: 4px;
    height: 4px;
    background-color: var(--accent);
    border-radius: 50%;
}

/* ===== Contact Section ===== */
.contact {
    padding: 100px 0;
    background: linear-gradient(180deg, #F8FAFC 0%, #EFF3F8 100%);
    position: relative;
}

.contact::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.3), transparent);
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.contact-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.contact-card.highlight {
    background: var(--primary);
    color: white;
}

.contact-card.highlight h3,
.contact-card.highlight p,
.contact-card.highlight .phone-number {
    color: white;
}

.contact-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.contact-desc {
    opacity: 0.8;
    margin-bottom: 1rem;
}

.phone-number {
    font-size: 2rem;
    font-weight: 800;
    display: block;
    margin-bottom: 0.5rem;
}

.location-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.location-info {
    flex: 1;
}

.location-info .address {
    font-size: 1rem;
    color: var(--text-main);
    margin-bottom: 0.25rem;
}

.location-info .address-detail {
    color: var(--text-body);
    margin-bottom: 1rem;
}

.location-details {
    background: var(--bg-light);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.location-details p {
    font-size: 0.9rem;
    color: var(--text-body);
    margin-bottom: 0.25rem;
}

.location-details p:last-child {
    margin-bottom: 0;
}

.map-link-btn {
    display: block;
    margin-top: 1rem;
    padding: 1rem 1.5rem;
    background: var(--primary);
    color: white !important;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    transition: all 0.2s ease;
    text-decoration: none;
}

.map-link-btn:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.modern-form {
    background: white;
    padding: 3rem;
    border-radius: 24px;
    box-shadow: var(--shadow-md);
}

.modern-form h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--primary);
}

.modern-form p {
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 0.9rem;
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    color: var(--primary);
}

.input-group input,
.input-group select,
.input-group textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.2s;
    background-color: var(--bg-light);
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background-color: white;
    box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.1);
}

.btn-submit-full {
    width: 100%;
    padding: 1rem;
    background-color: var(--accent);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-submit-full:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ===== Footer ===== */
.footer {
    background-color: var(--primary);
    color: rgba(255,255,255,0.7);
    padding: 60px 0 30px;
    font-size: 0.9rem;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand h3 {
    color: white;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.footer-contact p {
    margin-bottom: 0.5rem;
}

.footer-copyright {
    padding-top: 2rem;
    text-align: center;
    font-size: 0.85rem;
}

/* ===== Scroll Top ===== */
.scroll-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: white;
    color: var(--primary);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    font-size: 1.2rem;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s;
    pointer-events: none;
    z-index: 900;
}

.scroll-top-btn.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

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

/* ===== Mobile Responsive ===== */
@media (max-width: 768px) {
    .navbar .container {
        padding: 0 1rem;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--border);
    }

    .nav-menu.active {
        display: flex;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-trust {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        padding: 1rem 1.5rem;
        gap: 1rem;
    }

    .trust-num {
        font-size: 1.25rem;
    }

    .trust-label {
        font-size: 0.75rem;
    }

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

    .service-card {
        padding: 1.5rem;
    }

    .service-card h3 {
        white-space: normal;
        font-size: 1.1rem;
    }

    .service-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .about-wrapper, .contact-cards {
        grid-template-columns: 1fr;
    }

    .about-title {
        font-size: 1.75rem;
    }

    .profile-card {
        padding: 2rem 1.5rem;
    }

    .profile-name {
        font-size: 1.5rem;
    }

    .profile-stats {
        gap: 1.5rem;
    }

    .value-content h2 {
        font-size: 1.5rem;
    }

    .value-content p {
        font-size: 1rem;
    }

    .contact-card h3 {
        font-size: 1.1rem;
    }

    .phone-number {
        font-size: 1.5rem;
    }

    .modern-form {
        padding: 1.5rem;
    }

    .modern-form h3 {
        font-size: 1.25rem;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }

    .footer-brand h3 {
        font-size: 1rem;
    }
}