/* =============================================================================
   KALIMENT KOREA - PREMIUM B2B WEBSITE STYLES
   ============================================================================= */

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

:root {
    /* Colors */
    --primary-navy: #01164B;
    --primary-light: #1a2d6b;
    --warm-gray: #8B8680;
    --light-gray: #F5F5F5;
    --white: #FFFFFF;
    --text-dark: #1a1a1a;
    --text-medium: #555555;
    --text-light: #777777;
    --border-color: #E0E0E0;
    --accent-gold: #C9A961;
    
    /* Typography */
    --font-primary: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-secondary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --section-padding: 120px;
    --container-max-width: 1200px;
    
    /* Transitions */
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 30px;
}

/* Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 0;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-smooth);
}

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

/* Buttons
   ========================================================================== */
.btn {
    display: inline-block;
    padding: 16px 40px;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    border-radius: 4px;
    cursor: pointer;
    border: none;
    transition: var(--transition-smooth);
    font-family: var(--font-primary);
}

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

.btn-primary:hover {
    background-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(1, 22, 75, 0.3);
}

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

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

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

.btn-white:hover {
    background-color: var(--light-gray);
}

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

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

/* Navigation
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo-text {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--primary-navy);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
    align-items: center;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-navy);
    transition: width 0.3s ease;
}

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

.nav-menu .btn-contact {
    padding: 10px 24px;
    background-color: var(--primary-navy);
    color: var(--white);
    border-radius: 4px;
}

.nav-menu .btn-contact::after {
    display: none;
}

.nav-menu .btn-contact:hover {
    background-color: var(--primary-light);
}

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

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-navy);
    transition: var(--transition-smooth);
}

/* Hero Section
   ========================================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
    background-color: var(--white);
}

.hero-bg {
    position: absolute;
    top: 0;
    right: 0;
    width: 45%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-light) 100%);
    clip-path: polygon(25% 0, 100% 0, 100% 100%, 0% 100%);
    z-index: 0;
    opacity: 0.95;
}

.hero-content {
    max-width: 650px;
    padding: 60px 0;
    position: relative;
    z-index: 1;
    background-color: rgba(255, 255, 255, 0.98);
    padding-right: 40px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background-color: var(--light-gray);
    color: var(--text-medium);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 20px;
    margin-bottom: 30px;
    font-family: var(--font-secondary);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 30px;
    color: var(--text-dark);
}

.hero-title .highlight {
    color: var(--primary-navy);
}

.hero-subtitle {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-medium);
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 20px;
}

/* Section Styles
   ========================================================================== */
.section {
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-header.left {
    text-align: left;
    margin-left: 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-medium);
    line-height: 1.8;
}

/* Values Section
   ========================================================================== */
.section-values {
    background-color: var(--light-gray);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.value-card {
    background-color: var(--white);
    padding: 50px 40px;
    border-radius: 8px;
    text-align: center;
    transition: var(--transition-smooth);
}

.value-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.value-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 30px;
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.value-icon i {
    font-size: 2rem;
    color: var(--white);
}

.value-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.value-description {
    color: var(--text-medium);
    line-height: 1.8;
}

/* Overview Section
   ========================================================================== */
.overview-wrapper {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 80px;
    align-items: center;
}

.overview-features {
    margin: 40px 0;
}

.feature-item {
    display: flex;
    gap: 25px;
    margin-bottom: 30px;
    padding: 25px 30px;
    background-color: var(--white);
    border-radius: 8px;
    transition: var(--transition-smooth);
    border: 2px solid var(--light-gray);
}

.feature-item:hover {
    background-color: var(--white);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-navy);
    transform: translateX(5px);
}

.feature-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-navy);
    font-family: var(--font-secondary);
    flex-shrink: 0;
    min-width: 40px;
}

.feature-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.feature-content p {
    color: var(--text-medium);
    line-height: 1.7;
    font-size: 0.95rem;
}

.overview-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.stats-card {
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-light) 100%);
    padding: 60px 50px;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(1, 22, 75, 0.3);
}

.stat-item {
    text-align: center;
    padding: 30px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-item:last-child {
    border-bottom: none;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 10px;
    font-family: var(--font-secondary);
}

.stat-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

/* Why Section
   ========================================================================== */
.section-why {
    background-color: var(--light-gray);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.why-item {
    background-color: var(--white);
    padding: 40px 30px;
    border-radius: 8px;
    transition: var(--transition-smooth);
}

.why-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.why-item i {
    font-size: 2rem;
    color: var(--primary-navy);
    margin-bottom: 20px;
}

.why-item h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.why-item p {
    color: var(--text-medium);
    line-height: 1.7;
}

/* CTA Section
   ========================================================================== */
.section-cta {
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-light) 100%);
    color: var(--white);
    text-align: center;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--white);
}

.cta-subtitle {
    font-size: 1.2rem;
    margin-bottom: 40px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* Footer
   ========================================================================== */
.footer {
    background-color: #0a0f24;
    color: var(--white);
    padding: 80px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 60px;
    margin-bottom: 50px;
}

.footer-logo {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 15px;
}

.footer-tagline {
    color: var(--accent-gold);
    font-size: 0.9rem;
    margin-bottom: 20px;
    font-weight: 500;
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    font-size: 0.95rem;
}

.footer-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--white);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    transition: var(--transition-smooth);
}

.footer-links a:hover {
    color: var(--accent-gold);
}

.footer-contact {
    list-style: none;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

.footer-contact i {
    color: var(--accent-gold);
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* Responsive Design
   ========================================================================== */

/* Tablet */
@media (max-width: 992px) {
    :root {
        --section-padding: 80px;
    }
    
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--white);
        flex-direction: column;
        padding: 40px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        transition: left 0.3s ease;
        gap: 20px;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-content {
        max-width: 100%;
        background-color: transparent;
        padding-right: 0;
    }
    
    .hero-bg {
        width: 50%;
        clip-path: polygon(40% 0, 100% 0, 100% 100%, 0% 100%);
        opacity: 0.8;
    }
    
    .values-grid,
    .why-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .overview-wrapper {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

/* Mobile */
@media (max-width: 576px) {
    :root {
        --section-padding: 60px;
    }
    
    .container {
        padding: 0 20px;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    
    .hero {
        min-height: auto;
        padding: 100px 0 60px;
    }
    
    .hero-bg {
        display: none;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        padding: 14px 30px;
    }
    
    .values-grid,
    .why-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .value-card {
        padding: 40px 30px;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .cta-title {
        font-size: 1.75rem;
    }
    
    .cta-subtitle {
        font-size: 1rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}