/* ===== RESET & BASE STYLES - UPDATED 20250905-25 COMPLETE REDESIGN ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans KR', 'Roboto', sans-serif;
    line-height: 1.7;
    color: #2c3e50;
    background-color: #ffffff;
    font-weight: 400;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: #1a252f;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    font-size: 1rem;
    color: #34495e;
    font-weight: 400;
    line-height: 1.7;
}

/* ===== LAYOUT & CONTAINERS ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

.section-title {
    color: #2c3e50;
    margin-bottom: 1rem;
    position: relative;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.1),
                 0 1px 4px rgba(0, 0, 0, 0.05);
    font-weight: 800;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #3498db, #e74c3c);
    border-radius: 2px;
}

.section-subtitle {
    color: #7f8c8d;
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== LANGUAGE SWITCHER REMOVED ===== */

/* Language switcher styles removed */

/* ===== HEADER & NAVIGATION ===== */
.header {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.navbar {
    padding: 0.8rem 0;
}

.navbar .container {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    gap: 1rem !important;
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.navbar-brand {
    flex-shrink: 0;
    z-index: 10;
}

.logo {
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.5rem 0;
    transition: all 0.3s ease;
}

.logo:hover {
    transform: translateY(-2px);
}

.logo-text {
    font-size: 3.5rem;
    font-weight: 800;
    color: #2c3e50;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    letter-spacing: -1px;
    filter: none;
    background: linear-gradient(135deg, #ff0080 0%, #8000ff 16.66%, #0080ff 33.33%, #00ff00 50%, #ffff00 66.66%, #ff8000 83.33%, #ff0000 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-subtitle {
    font-size: 1rem;
    color: #5a6c7d;
    font-weight: 600;
    text-shadow: none;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-size: 0.9rem;
}

.navbar-menu {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 2rem;
}

.header-menu-grid {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    grid-template-rows: repeat(3, 1fr) !important;
    gap: 0.5rem !important;
    max-width: 1200px !important;
    margin: 0 auto !important;
    padding: 0.5rem 0 !important;
    overflow: visible !important;
}

.header-menu-grid::-webkit-scrollbar {
    height: 4px;
}

.header-menu-grid::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 2px;
}

.header-menu-grid::-webkit-scrollbar-thumb {
    background: #3498db;
    border-radius: 2px;
}

.header-menu-grid::-webkit-scrollbar-thumb:hover {
    background: #2980b9;
}

/* ===== HEADER MENU CARD STYLES ===== */
.nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0 1rem;
    gap: 0.8rem;
    align-items: center;
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: thin;
    scrollbar-color: #3498db #f1f1f1;
    min-width: 100%;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: 0.5rem 0.8rem;
    text-decoration: none;
    color: #2c3e50;
    font-weight: 700;
    font-size: 0.75rem;
    border-radius: 4px;
    background: linear-gradient(135deg, #34495e 0%, #2c3e50 100%);
    color: white;
    border: 1px solid #3498db;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    text-align: center;
    min-width: 110px;
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.1) 0%, rgba(41, 128, 185, 0.1) 100%);
    border-radius: 6px;
    z-index: 1;
}

.nav-link span {
    position: relative;
    z-index: 2;
}

.nav-link:hover {
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
    border-color: #2980b9;
}

/* ===== NAVIGATION SCROLLBAR STYLES ===== */
.nav-list::-webkit-scrollbar {
    height: 6px;
}

.nav-list::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.nav-list::-webkit-scrollbar-thumb {
    background: #3498db;
    border-radius: 3px;
}

.nav-list::-webkit-scrollbar-thumb:hover {
    background: #2980b9;
}

.header-menu-card {
    width: 100% !important;
    height: 3rem !important;
    border-radius: 8px !important;
    font-size: 0.9rem !important;
    font-weight: 600 !important;
    color: #2c3e50 !important;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%) !important;
    border: 2px solid #e9ecef !important;
    box-shadow: 0 4px 15px rgba(52, 73, 94, 0.15) !important;
    overflow: hidden !important;
    margin: 0 !important;
    padding: 0.5rem !important;
    text-decoration: none !important;
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    justify-content: center !important;
    transition: all 0.3s ease !important;
    position: relative !important;
}

.header-menu-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.header-menu-card:hover::before {
    left: 100%;
}

.header-menu-card:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    color: #ffffff !important;
    border-color: #667eea !important;
    transform: translateY(-3px) scale(1.05) !important;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4), 0 0 0 3px rgba(255, 255, 255, 0.3) !important;
}

.header-menu-card.selected {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    color: #ffffff !important;
    border-color: #667eea !important;
    transform: translateY(-2px) scale(1.02) !important;
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5), 0 0 0 2px rgba(255, 255, 255, 0.4) !important;
}

.header-menu-card .menu-number {
    font-size: 1.2rem !important;
    font-weight: 700 !important;
    color: #667eea !important;
    margin-bottom: 0.2rem !important;
}

.header-menu-card .menu-text {
    font-size: 1rem !important;
    font-weight: 600 !important;
    color: #2c3e50 !important;
    text-align: center !important;
    line-height: 1.2 !important;
    white-space: nowrap !important;
}

.header-menu-card:hover .menu-text {
    color: #ffffff !important;
}

.header-menu-card.selected .menu-text {
    color: #ffffff !important;
}

}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, #3498db, #e74c3c);
    transition: left 0.3s ease;
    z-index: -1;
}

.nav-link:hover::before {
    left: 0;
}

.nav-link:hover {
    color: white;
    transform: translateY(-2px);
}

.navbar-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.navbar-toggle span {
    width: 25px;
    height: 3px;
    background: #2c3e50;
    transition: all 0.3s ease;
}

/* ===== BACKGROUND IMAGE SECTION ===== */
.background-image-section {
    height: 100vh;
    margin-top: 80px; /* Account for fixed header */
    padding-top: 0;
    position: relative;
    overflow: hidden;
}

.bg-image {
    width: 100%;
    height: 100%;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center 100%;
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    background: 
        linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%),
        url('images/sound-tech-hero-new.png?v=20251009-2') center 30%/contain no-repeat,
        linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding: 0;
    overflow: hidden;
}





.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 2.5rem;
    margin-top: 65vh;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.2) 100%);
    border-radius: 25px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(15px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
}



.hero-title {
    font-size: clamp(2.8rem, 5.5vw, 4.5rem);
    font-weight: 900;
    color: #ffffff;
    margin-bottom: 2rem;
    line-height: 1.1;
    text-shadow: 
        0 0 30px rgba(0, 0, 0, 0.9),
        0 0 60px rgba(0, 0, 0, 0.7),
        0 6px 12px rgba(0, 0, 0, 0.8),
        0 12px 24px rgba(0, 0, 0, 0.6),
        0 0 0 3px rgba(255, 255, 255, 0.4),
        0 0 0 6px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: clamp(1.2rem, 2.8vw, 1.6rem);
    color: #ffffff;
    margin-bottom: 3.5rem;
    line-height: 1.6;
    font-weight: 600;
    text-shadow: 
        0 0 25px rgba(0, 0, 0, 0.8),
        0 0 50px rgba(0, 0, 0, 0.6),
        0 4px 8px rgba(0, 0, 0, 0.7),
        0 8px 16px rgba(0, 0, 0, 0.5),
        0 0 0 2px rgba(255, 255, 255, 0.3),
        0 0 0 4px rgba(0, 0, 0, 0.4);
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.4s both;
    position: relative;
}


/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
    font-family: inherit;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transition: left 0.3s ease;
}

.btn:hover::before {
    left: 0;
}

.btn:active {
    transform: translateY(1px);
}

.btn-primary {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(52, 152, 219, 0.6);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #2c3e50;
    transform: translateY(-3px);
}

/* ===== MAIN MENU SECTION ===== */
.main-menu {
    padding: 4rem 0;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    position: relative;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.main-menu::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to bottom, transparent, rgba(255, 255, 255, 0.8));
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
    z-index: 2;
}

.section-title {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 1.5rem;
    position: relative;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    text-align: center !important;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #718096;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.menu-grid,
#main-menu-grid {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    grid-template-rows: repeat(3, 1fr) !important;
    gap: 2rem !important;
    max-width: 1200px !important;
    margin: 0 auto !important;
    padding: 0 1rem !important;
    overflow: visible !important;
}

.menu-grid::-webkit-scrollbar {
    height: 8px;
}

.menu-grid::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.menu-grid::-webkit-scrollbar-thumb {
    background: #3498db;
    border-radius: 4px;
}

.menu-grid::-webkit-scrollbar-thumb:hover {
    background: #2980b9;
}

.menu-card {
    background: white;
    border-radius: 16px;
    padding: 2rem 1.5rem;
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.1);
    border: 2px solid rgba(52, 152, 219, 0.15);
    min-height: 320px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.menu-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.menu-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15), 
                0 0 0 1px rgba(102, 126, 234, 0.2),
                inset 0 1px 0 rgba(255, 255, 255, 0.1);
    border-color: rgba(102, 126, 234, 0.3);
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
}

.menu-card.selected {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    border-color: #667eea !important;
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.4) !important;
    transform: translateY(-8px) !important;
    border: 3px solid #667eea !important;
}

.menu-card.selected .menu-number {
    background: rgba(255, 255, 255, 0.2) !important;
    color: white !important;
    border: 2px solid rgba(255, 255, 255, 0.3) !important;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.3) !important;
}

.menu-card.selected .menu-icon {
    filter: brightness(1.2) !important;
}

.menu-card.selected h3 {
    color: white !important;
}

.menu-card.selected p {
    color: rgba(255, 255, 255, 0.9) !important;
}

.menu-card.selected .tag {
    background: rgba(255, 255, 255, 0.2) !important;
    color: white !important;
    border: 1px solid rgba(255, 255, 255, 0.3) !important;
}

.menu-card.selected .menu-link {
    background: rgba(255, 255, 255, 0.2) !important;
    color: white !important;
    border: 1px solid rgba(255, 255, 255, 0.3) !important;
}

.menu-card.selected .menu-link:hover {
    background: rgba(255, 255, 255, 0.3) !important;
    color: white !important;
}

/* ===== NEWS SECTION STYLES ===== */
.news-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border: 1px solid #e9ecef;
    transition: all 0.3s ease;
    margin-bottom: 1.5rem;
}

.news-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.news-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}


.news-category {
    background: #f8f9fa;
    color: #6c757d;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.news-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #2c3e50;
    margin: 0 0 0.75rem 0;
    line-height: 1.3;
}

.news-description {
    color: #6c757d;
    line-height: 1.6;
    margin: 0 0 1rem 0;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.news-source {
    color: #667eea;
    font-weight: 600;
}

.news-time {
    color: #adb5bd;
}

.news-link {
    display: inline-block;
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.news-link:hover {
    color: #764ba2;
}

.news-card.announcement {
    border-left: 4px solid #667eea;
}

.news-card.research {
    border-left: 4px solid #00ff88;
}

.news-card.standards {
    border-left: 4px solid #ffd700;
}

.news-card.technology {
    border-left: 4px solid #ff6b6b;
}

.news-card.software {
    border-left: 4px solid #9b59b6;
}

.news-card.equipment {
    border-left: 4px solid #e67e22;
}

.news-card.development {
    border-left: 4px solid #3498db;
}

.news-card.community {
    border-left: 4px solid #1abc9c;
}

.news-card.engineering {
    border-left: 4px solid #f39c12;
}

.news-card.design {
    border-left: 4px solid #e74c3c;
}

.news-card.music {
    border-left: 4px solid #8e44ad;
}

.news-card.general {
    border-left: 4px solid #95a5a6;
}

.menu-card:hover::before {
    transform: scaleX(1);
}

.menu-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
    text-align: center;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
    transition: all 0.3s ease;
}

.menu-card:hover .menu-icon {
    transform: scale(1.1) rotate(5deg);
    filter: drop-shadow(0 8px 16px rgba(102, 126, 234, 0.3));
}

.menu-number {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.menu-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: #1a252f;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    line-height: 1.3;
    transition: all 0.3s ease;
}

.menu-card:hover h3 {
    color: #667eea;
    text-shadow: 0 4px 8px rgba(102, 126, 234, 0.3);
    transform: translateY(-2px);
}

.menu-card p {
    font-size: 1rem; /* Increased font size */
    font-weight: 500; /* Bolder font */
    color: #34495e;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.menu-card:hover p {
    color: #2c3e50;
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.menu-tags {
    display: flex;
    gap: 0.4rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.tag {
    background: #f1f3f4;
    color: #495057;
    padding: 0.3rem 0.6rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 400;
    border: none;
    box-shadow: none;
}

.menu-link {
    display: inline-block;
    background: #f8f9fa;
    color: #495057;
    text-decoration: none;
    padding: 0.5rem 1.2rem;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
    box-shadow: none;
    text-align: center;
    width: 100%;
    font-size: 0.9rem;
}

.menu-link:hover {
    transform: translateY(-1px);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
    border-color: #adb5bd;
    background: #e9ecef;
}

/* ===== LATEST ARTICLES SECTION ===== */
.latest-articles {
    padding: 5rem 0;
    background: white;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.article-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #f7fafc;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.article-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.article-card:hover .article-image img {
    transform: scale(1.05);
}

.article-content {
    padding: 2rem;
}

.article-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.article-excerpt {
    color: #718096;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.article-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.article-source, .article-date {
    background: #f7fafc;
    color: #4a5568;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 500;
}

.article-link {
    display: inline-block;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 20px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.article-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
}

/* ===== TECHNOLOGY HIGHLIGHTS SECTION ===== */
.technology-highlights {
    padding: 5rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
}

.technology-highlights::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain2" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain2)"/></svg>');
    opacity: 0.2;
}

.technology-highlights .section-title,
.technology-highlights .section-subtitle {
    color: white;
    position: relative;
    z-index: 2;
}

.technology-highlights .section-title::after {
    background: linear-gradient(90deg, #ffffff, rgba(255, 255, 255, 0.6));
}

.highlights-content {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 2.5rem !important;
    max-width: 1200px !important;
    margin: 0 auto !important;
    padding: 0 1rem !important;
    position: relative !important;
    z-index: 2 !important;
}

.highlight-item {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    border-radius: 20px !important;
    padding: 2.5rem 2rem !important;
    border: 3px solid rgba(102, 126, 234, 0.3) !important;
    transition: all 0.3s ease !important;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2) !important;
    position: relative !important;
    overflow: hidden !important;
}

.highlight-item::before {
    content: '' !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%) !important;
    z-index: 1 !important;
}

.highlight-item:hover {
    transform: translateY(-8px) !important;
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.4) !important;
    border-color: rgba(102, 126, 234, 0.6) !important;
}

.highlight-item h3 {
    font-size: 1.6rem !important;
    font-weight: 800 !important;
    margin-bottom: 2rem !important;
    color: #ffffff !important;
    text-align: center !important;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3) !important;
    position: relative !important;
    z-index: 2 !important;
    letter-spacing: 0.5px !important;
}

.highlight-item ul {
    list-style: none !important;
    padding: 0 !important;
    margin: 0 !important;
    position: relative !important;
    z-index: 2 !important;
}

.highlight-item li {
    margin-bottom: 1.2rem !important;
    padding: 1rem !important;
    background: rgba(255, 255, 255, 0.15) !important;
    border-radius: 12px !important;
    transition: all 0.3s ease !important;
    border: 1px solid rgba(255, 255, 255, 0.2) !important;
    backdrop-filter: blur(10px) !important;
}

.highlight-item li:hover {
    background: rgba(255, 255, 255, 0.25) !important;
    transform: translateX(8px) !important;
    border-color: rgba(255, 255, 255, 0.4) !important;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2) !important;
}

.highlight-item a {
    color: #ffffff !important;
    text-decoration: none !important;
    font-weight: 600 !important;
    transition: all 0.3s ease !important;
    font-size: 1rem !important;
    display: block !important;
    line-height: 1.5 !important;
}

.highlight-item a:hover {
    color: #fbbf24 !important;
    text-shadow: 0 0 8px rgba(251, 191, 36, 0.6) !important;
    transform: scale(1.02) !important;
}


/* ===== SERVICES SECTION (Legacy - for backward compatibility) ===== */
.services {
    padding: 6rem 0;
    background: #f8f9fa;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3498db, #e74c3c);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: block;
}

.service-title {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.service-description {
    color: #7f8c8d;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.service-link {
    color: #3498db;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.service-link:hover {
    color: #2980b9;
}

/* ===== ABOUT SECTION ===== */
#about {
    padding: 6rem 0;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    position: relative;
}

#about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, #e2e8f0, transparent);
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
    padding: 2rem 0;
}

.about-text p {
    font-size: 1.2rem;
    color: #718096;
    line-height: 1.8;
    margin-bottom: 4rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 1rem;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
    margin-top: 2rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 2rem;
}

.feature-item {
    background: linear-gradient(135deg, #ffffff 0%, #fefefe 100%);
    padding: 2.5rem;
    border-radius: 24px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
    border: 1px solid #f1f5f9;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-item:hover::before {
    opacity: 1;
}

.feature-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
    border-color: #e2e8f0;
}

.feature-item h3 {
    color: #1e40af;
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 1.2rem;
    position: relative;
}

.feature-item p {
    color: #64748b;
    line-height: 1.7;
    margin: 0;
    font-size: 1.05rem;
}

/* ===== CONTACT SECTION ===== */
#contact {
    padding: 6rem 0;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    position: relative;
}

#contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, #e2e8f0, transparent);
}

.contact-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem 0;
    text-align: center;
}

.contact-info {
    display: flex;
    justify-content: center;
    margin-top: 4rem;
    padding: 0 2rem;
}

.contact-item {
    background: linear-gradient(135deg, #ffffff 0%, #fefefe 100%);
    padding: 3rem;
    border-radius: 24px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
    border: 1px solid #f1f5f9;
    text-align: center;
    transition: all 0.3s ease;
    max-width: 450px;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.contact-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.contact-item:hover::before {
    opacity: 1;
}

.contact-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
    border-color: #e2e8f0;
}

.contact-item h3 {
    color: #1e40af;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.2rem;
    position: relative;
}

.contact-item p {
    color: #64748b;
    line-height: 1.7;
    margin-bottom: 2rem;
    font-size: 1.05rem;
}

.contact-link {
    display: inline-block;
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
}

.contact-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.5);
    color: white;
}

/* ===== FORMS ===== */
.form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-input,
.form-textarea {
    padding: 1rem;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: #3498db;
}

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

/* ===== UPDATE INDICATOR ===== */
.update-indicator {
    position: fixed;
    top: 20px;
    right: 20px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: white;
    padding: 12px 20px;
    border-radius: 25px;
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.3);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    z-index: 1000;
    animation: slideInRight 0.3s ease-out;
}

.update-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ===== FOOTER ===== */
.footer {
    background: linear-gradient(135deg, #1a252f 0%, #2c3e50 100%) !important;
    color: white !important;
    padding: 4rem 0 2rem !important;
    border-top: 3px solid #3498db !important;
}

.footer-content {
    display: grid !important;
    grid-template-columns: 2fr 1fr !important;
    gap: 3rem !important;
    margin-bottom: 3rem !important;
    max-width: 1200px !important;
    margin-left: auto !important;
    margin-right: auto !important;
    padding: 0 2rem !important;
}

.footer-section {
    display: block !important;
    width: 100% !important;
}

.footer-section h3 {
    color: #ffffff !important;
    font-size: 1.8rem !important;
    font-weight: 700 !important;
    margin-bottom: 1rem !important;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3) !important;
    display: block !important;
}

.footer-section h4 {
    color: #ecf0f1 !important;
    font-size: 1.3rem !important;
    font-weight: 600 !important;
    margin-bottom: 1rem !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2) !important;
    display: block !important;
}

.footer-section p {
    color: #bdc3c7 !important;
    line-height: 1.6 !important;
    font-size: 1rem !important;
    margin-bottom: 0 !important;
}

.footer-section ul {
    list-style: none !important;
    padding: 0 !important;
    margin: 0 !important;
}

.footer-section ul li {
    margin-bottom: 0.8rem !important;
}

.footer-section ul li a {
    color: #3498db !important;
    text-decoration: none !important;
    font-size: 1rem !important;
    font-weight: 500 !important;
    transition: all 0.3s ease !important;
    display: inline-block !important;
    padding: 0.2rem 0 !important;
}

.footer-section ul li a:hover {
    color: #ffffff !important;
    text-shadow: 0 0 8px rgba(52, 152, 219, 0.6) !important;
    transform: translateX(5px) !important;
}

.social-links {
    display: flex !important;
    gap: 1.5rem !important;
    margin-top: 1rem !important;
    flex-wrap: wrap !important;
    justify-content: flex-start !important;
}

.social-links a {
    color: #3498db !important;
    text-decoration: none !important;
    font-size: 1.5rem !important;
    transition: all 0.3s ease !important;
    display: inline-block !important;
    padding: 0.5rem !important;
    border-radius: 50% !important;
    background: rgba(52, 152, 219, 0.1) !important;
    border: 2px solid rgba(52, 152, 219, 0.3) !important;
}

.social-links a:hover {
    color: #ffffff !important;
    background: rgba(52, 152, 219, 0.2) !important;
    border-color: #3498db !important;
    transform: translateY(-3px) !important;
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4) !important;
}

.footer-bottom {
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    padding-top: 2rem !important;
    border-top: 2px solid #34495e !important;
    margin-top: 2rem !important;
}

.footer-bottom p {
    color: #95a5a6 !important;
    font-size: 0.9rem !important;
    margin: 0 !important;
    text-align: center !important;
    font-weight: 400 !important;
}

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

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }
.mb-4 { margin-bottom: 4rem; }

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mt-4 { margin-top: 4rem; }

.p-1 { padding: 1rem; }
.p-2 { padding: 2rem; }
.p-3 { padding: 3rem; }
.p-4 { padding: 4rem; }

/* ===== PAGE HEADER STYLES ===== */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem 0;
    margin-top: 80px; /* Account for fixed header */
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 320px;
    height: 40vh;
}

.page-header .container {
    display: flex !important;
    justify-content: center !important;
    align-items: flex-end !important;
    text-align: center !important;
    max-width: 1200px !important;
    margin: 0 auto !important;
    padding: 2rem 2rem 3rem 2rem !important;
    height: 100% !important;
    width: 100% !important;
}

.page-header .page-header-content {
    position: relative !important;
    z-index: 2 !important;
    text-align: center !important;
    max-width: 800px !important;
    margin: 0 !important;
    padding: 0 !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    width: 100% !important;
}

.page-header .page-title {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem) !important;
    font-weight: 700 !important;
    color: white !important;
    margin: 0 0 1rem 0 !important;
    line-height: 1.2 !important;
    text-shadow: 0 3px 15px rgba(0, 0, 0, 0.4) !important;
    text-align: center !important;
    display: block !important;
    width: 100% !important;
}

.page-header .page-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem) !important;
    color: rgba(255, 255, 255, 0.95) !important;
    margin: 0 0 1.5rem 0 !important;
    line-height: 1.5 !important;
    font-weight: 400 !important;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3) !important;
    text-align: center !important;
    display: block !important;
    width: 100% !important;
}

.page-header .breadcrumb {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 0.5rem !important;
    font-size: 0.85rem !important;
    color: rgba(255, 255, 255, 0.8) !important;
    text-align: center !important;
    margin: 0 !important;
    width: 100% !important;
}

.page-header .breadcrumb a {
    color: #00ff88 !important;
    text-decoration: underline !important;
    text-underline-offset: 3px !important;
    font-size: 1rem !important;
    font-weight: 600 !important;
    transition: all 0.3s ease !important;
}

.page-header .breadcrumb a:hover {
    color: #ffffff !important;
    text-decoration: underline !important;
    text-shadow: 0 0 8px rgba(0, 255, 136, 0.6) !important;
    transform: scale(1.05) !important;
}

.page-header .breadcrumb .separator {
    color: rgba(255, 255, 255, 0.6) !important;
}

.page-header .breadcrumb .current {
    color: #ffffff !important;
    font-weight: 700 !important;
    font-size: 0.9rem !important;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3) !important;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain3" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain3)"/></svg>');
    opacity: 0.3;
}

/* Removed duplicate styles - using .page-header specific styles above */

/* ===== MAIN CONTENT STYLES ===== */
.main-content {
    padding: 4rem 0;
    background: white;
}

.content-section {
    margin-bottom: 4rem;
}

.concepts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.concept-card {
    background: white;
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid #f7fafc;
    transition: all 0.3s ease;
}

.concept-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.concept-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 1.5rem;
    text-align: center;
}

.concept-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.concept-card li {
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: #f7fafc;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.concept-card li:hover {
    background: #edf2f7;
    transform: translateX(5px);
}

.concept-card a {
    color: #2d3748;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.concept-card a:hover {
    color: #667eea;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero-content {
        padding: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .menu-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        grid-template-rows: auto !important;
        gap: 1.5rem !important;
        padding: 0 1rem !important;
    }
    
    .menu-card {
        min-height: 280px;
    }
    
    .menu-number {
        width: 2rem;
        height: 2rem;
        font-size: 1rem;
    }
    
    .header-menu-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        grid-template-rows: auto !important;
        max-width: 800px !important;
    }
}

/* Mobile styles */
@media (max-width: 768px) {
    .menu-grid {
        grid-template-columns: 1fr !important;
        grid-template-rows: auto !important;
        gap: 1.5rem !important;
        padding: 0 1rem !important;
    }
    
    .header-menu-grid {
        grid-template-columns: 1fr !important;
        grid-template-rows: auto !important;
        max-width: 400px !important;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }
    
    .highlights-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }
    
    .section-header {
        margin-bottom: 3rem;
        padding: 0 1rem;
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 2rem;
    }
    
    .menu-card,
    .article-card,
    .service-card {
        padding: 2rem 1.5rem;
    }
    
    .nav-list {
        gap: 0.8rem !important;
        overflow-x: auto !important;
    }
    
    .nav-link {
        font-size: 0.75rem !important;
        padding: 0.5rem 0.8rem !important;
        min-width: 110px !important;
        flex-shrink: 0 !important;
    }
}