/* ===== Global Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #ffc107;
    --primary-dark: #e0a800;
    --secondary-color: #1a1a1a;
    --accent-blue: #00b4d8;
    --accent-purple: #7209b7;
    --accent-orange: #ff6b35;
    --accent-green: #06ffa5;
    --text-dark: #333;
    --text-light: #666;
    --text-white: #ffffff;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 15px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.15);
    --shadow-glow: 0 0 20px rgba(255, 193, 7, 0.3);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Tech Pattern Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255, 193, 7, 0.06) 2px, rgba(255, 193, 7, 0.06) 4px),
        repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(0, 180, 216, 0.04) 2px, rgba(0, 180, 216, 0.04) 4px);
    pointer-events: none;
    z-index: 1;
}

body > * {
    position: relative;
    z-index: 2;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Plus Jakarta Sans', 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Space Grotesk', 'Noto Sans TC', sans-serif;
    letter-spacing: -0.02em;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2em;
}

/* ===== Navigation ===== */
nav {
    position: sticky;
    top: 0;
    background: linear-gradient(135deg, rgba(26, 26, 26, 0.98), rgba(255, 193, 7, 0.15), rgba(0, 180, 216, 0.15));
    backdrop-filter: blur(15px);
    padding: 1.2em 2em;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    box-shadow: 
        0 4px 20px rgba(0, 0, 0, 0.5),
        0 0 40px rgba(255, 193, 7, 0.2);
    transition: var(--transition);
    border-bottom: 2px solid rgba(255, 193, 7, 0.3);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75em;
}

.nav-logo-image {
    height: 40px;
    width: auto;
    transition: var(--transition);
}

.nav-logo-image:hover {
    transform: scale(1.05);
}

.nav-logo span {
    font-size: 1.8em;
    color: var(--primary-color);
    font-weight: 700;
    font-family: 'Space Grotesk', 'Noto Sans TC', sans-serif;
    letter-spacing: -1px;
    text-shadow: 0 2px 10px rgba(255, 193, 7, 0.5);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1.5em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2em;
}

.nav-links a {
    color: var(--text-white);
    text-decoration: none;
    font-weight: 700;
    font-size: 1em;
    position: relative;
    transition: var(--transition);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

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

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

.nav-links a:hover::after {
    width: 100%;
}

.lang-switcher {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-white);
    font-size: 1.1em;
    cursor: pointer;
    padding: 0.6em 0.8em;
    border-radius: 8px;
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.lang-switcher:hover {
    background: rgba(255, 193, 7, 0.2);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.mobile-menu-toggle {
    display: none;
    font-size: 1.5em;
    color: var(--text-white);
    cursor: pointer;
    padding: 0.5em;
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    color: var(--text-white);
    text-align: center;
    padding: 10em 2em 8em;
    background: 
        linear-gradient(135deg, rgba(0, 64, 128, 0.85) 0%, rgba(0, 100, 180, 0.75) 30%, rgba(255, 193, 7, 0.15) 70%, rgba(0, 64, 128, 0.9) 100%),
        url('images/bg/pexels-tara-winstead-8386440.jpg') center/cover no-repeat;
    overflow: hidden;
    box-shadow: inset 0 0 100px rgba(0, 64, 128, 0.5);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 15% 40%, rgba(255, 193, 7, 0.25) 0%, transparent 40%),
        radial-gradient(circle at 85% 70%, rgba(0, 180, 216, 0.3) 0%, transparent 40%),
        radial-gradient(circle at 50% 10%, rgba(255, 193, 7, 0.2) 0%, transparent 40%),
        radial-gradient(circle at 70% 90%, rgba(0, 180, 216, 0.2) 0%, transparent 40%);
    animation: pulseGlow 10s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, transparent 48%, rgba(255, 193, 7, 0.05) 49%, rgba(255, 193, 7, 0.05) 51%, transparent 52%),
        linear-gradient(-45deg, transparent 48%, rgba(0, 180, 216, 0.05) 49%, rgba(0, 180, 216, 0.05) 51%, transparent 52%);
    background-size: 30px 30px;
    animation: gridMove 20s linear infinite;
    opacity: 0.4;
}

@keyframes pulseGlow {
    0%, 100% { 
        opacity: 0.6;
        transform: scale(1);
    }
    50% { 
        opacity: 1;
        transform: scale(1.05);
    }
}

@keyframes gridMove {
    0% { background-position: 0 0, 0 0; }
    100% { background-position: 30px 30px, -30px 30px; }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.95), rgba(255, 193, 7, 0.8));
    backdrop-filter: blur(15px);
    padding: 0.6em 2em;
    border-radius: 50px;
    font-size: 1em;
    font-weight: 700;
    margin-bottom: 2em;
    border: 2px solid rgba(255, 193, 7, 1);
    color: var(--secondary-color);
    box-shadow: 
        0 4px 20px rgba(255, 193, 7, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
    animation: fadeInDown 0.8s ease, badgePulse 3s ease-in-out infinite;
}

@keyframes badgePulse {
    0%, 100% { 
        box-shadow: 
            0 4px 20px rgba(255, 193, 7, 0.3),
            inset 0 1px 0 rgba(255, 255, 255, 0.2);
    }
    50% { 
        box-shadow: 
            0 4px 30px rgba(255, 193, 7, 0.5),
            0 0 40px rgba(255, 193, 7, 0.3),
            inset 0 1px 0 rgba(255, 255, 255, 0.3);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero h1 {
    font-size: 4em;
    font-weight: 700;
    margin-bottom: 0.5em;
    line-height: 1.1;
    text-shadow: 
        2px 2px 10px rgba(0, 0, 0, 0.5),
        0 0 20px rgba(255, 193, 7, 0.5),
        0 0 40px rgba(0, 180, 216, 0.3);
    animation: fadeInUp 0.8s ease 0.2s both, titleGlow 4s ease-in-out infinite;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, #ffffff 0%, rgba(255, 193, 7, 1) 50%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: fadeInUp 0.8s ease 0.2s both, shimmer 3s linear infinite;
}

@keyframes shimmer {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

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

.hero p {
    font-size: 1.3em;
    margin-bottom: 2.5em;
    opacity: 1;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease 0.4s both;
    text-shadow: 
        1px 1px 5px rgba(0, 0, 0, 0.5),
        0 0 10px rgba(0, 0, 0, 0.3);
    color: var(--text-white);
    font-weight: 500;
}

.hero-buttons {
    display: flex;
    gap: 1.5em;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 4em;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5em;
    padding: 1em 2.5em;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1em;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    letter-spacing: -0.01em;
}

.cta-button.primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-orange));
    color: var(--secondary-color);
    position: relative;
    overflow: hidden;
}

.cta-button.primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s;
}

.cta-button.primary:hover::before {
    left: 100%;
}

.cta-button.primary:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 
        0 10px 30px rgba(255, 193, 7, 0.4),
        0 0 40px rgba(255, 193, 7, 0.3);
}

.cta-button.secondary {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    color: var(--text-white);
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.cta-button.secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--text-white);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 
        0 10px 30px rgba(255, 255, 255, 0.2),
        0 0 40px rgba(0, 180, 216, 0.3);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2em;
    max-width: 800px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease 0.8s both;
}

.stat-item {
    padding: 2em 1.5em;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(255, 193, 7, 0.1));
    backdrop-filter: blur(15px);
    border-radius: var(--border-radius);
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.2), rgba(0, 180, 216, 0.2));
    opacity: 0;
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-8px) scale(1.05);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.25), rgba(255, 193, 7, 0.2));
    border-color: rgba(255, 193, 7, 0.6);
    box-shadow: 
        0 10px 30px rgba(255, 193, 7, 0.3),
        0 0 40px rgba(255, 193, 7, 0.2);
}

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

.stat-item:nth-child(2) {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(0, 180, 216, 0.1));
}

.stat-item:nth-child(2):hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.25), rgba(0, 180, 216, 0.2));
    border-color: rgba(0, 180, 216, 0.6);
    box-shadow: 
        0 10px 30px rgba(0, 180, 216, 0.3),
        0 0 40px rgba(0, 180, 216, 0.2);
}

.stat-item:nth-child(3) {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(6, 255, 165, 0.1));
}

.stat-item:nth-child(3):hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.25), rgba(6, 255, 165, 0.2));
    border-color: rgba(6, 255, 165, 0.6);
    box-shadow: 
        0 10px 30px rgba(6, 255, 165, 0.3),
        0 0 40px rgba(6, 255, 165, 0.2);
}

.stat-item:nth-child(4) {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(114, 9, 183, 0.1));
}

.stat-item:nth-child(4):hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.25), rgba(114, 9, 183, 0.2));
    border-color: rgba(114, 9, 183, 0.6);
    box-shadow: 
        0 10px 30px rgba(114, 9, 183, 0.3),
        0 0 40px rgba(114, 9, 183, 0.2);
}

.stat-number {
    font-size: 3em;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.2em;
    text-shadow: 
        0 2px 10px rgba(0, 0, 0, 0.3),
        0 0 20px rgba(255, 193, 7, 0.5);
    position: relative;
    z-index: 1;
}

.stat-label {
    font-size: 0.95em;
    opacity: 0.95;
    font-weight: 600;
    color: var(--text-white);
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 1;
}

.hero-scroll {
    position: absolute;
    bottom: 3em;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.hero-scroll a {
    color: var(--primary-color);
    font-size: 2.5em;
    opacity: 0.9;
    transition: var(--transition);
    text-shadow: 
        0 0 10px rgba(255, 193, 7, 0.5),
        0 0 20px rgba(0, 180, 216, 0.3);
    display: inline-block;
}

.hero-scroll a:hover {
    opacity: 1;
    transform: scale(1.2);
    text-shadow: 
        0 0 20px rgba(255, 193, 7, 0.8),
        0 0 40px rgba(0, 180, 216, 0.5);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-15px);
    }
    60% {
        transform: translateX(-50%) translateY(-8px);
    }
}

/* ===== Section Headers ===== */
.section-header {
    text-align: center;
    margin-bottom: 4em;
}

.section-title {
    font-size: 2.5em;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 0.5em;
    position: relative;
    display: inline-block;
    letter-spacing: -0.03em;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-blue), var(--primary-color), var(--accent-orange));
    border-radius: 2px;
    box-shadow: 0 2px 10px rgba(255, 193, 7, 0.4);
}

.section-subtitle {
    font-size: 1.2em;
    color: var(--text-light);
    margin-top: 1em;
}

/* ===== Services Section ===== */
.services-section {
    padding: 6em 0;
    background: 
        linear-gradient(180deg, rgba(0, 120, 200, 0.12) 0%, rgba(255, 255, 255, 0.92) 30%, rgba(255, 193, 7, 0.08) 70%, rgba(255, 255, 255, 0.9) 100%),
        url('images/bg/pexels-bohlemedia-2050718.jpg') center/cover no-repeat fixed;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5em;
}

.service-card {
    padding: 2.5em;
    background: var(--bg-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid #e9ecef;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
    transform: scaleX(0);
    transition: var(--transition);
}

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

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

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-orange));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5em;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(255, 193, 7, 0.3);
}

.service-card:nth-child(2) .service-icon {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    box-shadow: 0 4px 20px rgba(0, 180, 216, 0.3);
}

.service-card:nth-child(3) .service-icon {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
    box-shadow: 0 4px 20px rgba(6, 255, 165, 0.3);
}

.service-card:nth-child(4) .service-icon {
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-orange));
    box-shadow: 0 4px 20px rgba(114, 9, 183, 0.3);
}

.service-card:hover .service-icon {
    transform: rotate(360deg) scale(1.1);
}

.service-icon i {
    font-size: 2em;
    color: var(--text-white);
}

.service-card h3 {
    font-size: 1.5em;
    color: var(--secondary-color);
    margin-bottom: 1em;
    font-weight: 700;
}

.service-card p {
    color: var(--text-light);
    margin-bottom: 1.5em;
    line-height: 1.7;
}

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

.service-features li {
    color: var(--text-dark);
    margin-bottom: 0.8em;
    display: flex;
    align-items: center;
    gap: 0.75em;
}

.service-features i {
    color: var(--primary-color);
    font-size: 0.9em;
}

/* ===== Projects Section ===== */
.projects-section {
    padding: 6em 0;
    background: 
        linear-gradient(180deg, rgba(0, 140, 180, 0.75) 0%, rgba(255, 193, 7, 0.15) 50%, rgba(0, 180, 216, 0.65) 100%),
        url('images/bg/pexels-sliceisop-994473.jpg') center/cover no-repeat fixed;
}

.projects-section .section-title {
    color: var(--text-white);
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
}

.projects-section .section-subtitle {
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.3);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5em;
}

.project {
    background: var(--bg-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.project:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.project.featured {
    grid-column: span 2;
}

.project-badge {
    position: absolute;
    top: 1em;
    right: 1em;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-orange));
    color: var(--secondary-color);
    padding: 0.5em 1em;
    border-radius: 50px;
    font-size: 0.85em;
    font-weight: 600;
    z-index: 2;
    box-shadow: 0 4px 15px rgba(255, 193, 7, 0.4);
}

.project-image-wrapper {
    position: relative;
    width: 100%;
    height: 300px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

.project-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.project:hover .project-image {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 26, 26, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.project:hover .project-overlay {
    opacity: 1;
}

.project-overlay i {
    color: var(--text-white);
}

.project-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-orange));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 2em 2em 1em;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(255, 193, 7, 0.3);
}

.project:nth-child(2) .project-icon {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
}

.project:nth-child(3) .project-icon {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
}

.project:nth-child(4) .project-icon {
    background: linear-gradient(135deg, var(--accent-orange), var(--primary-color));
}

.project:nth-child(5) .project-icon {
    background: linear-gradient(135deg, var(--accent-purple), var(--primary-dark));
}

.project:nth-child(6) .project-icon {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-green));
}

.project:nth-child(7) .project-icon {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-purple));
}

.project:nth-child(8) .project-icon {
    background: linear-gradient(135deg, var(--accent-orange), var(--accent-blue));
}

.project:nth-child(9) .project-icon {
    background: linear-gradient(135deg, var(--accent-green), var(--primary-color));
}

.project-icon i {
    font-size: 1.8em;
    color: var(--text-white);
}

.project-content {
    padding: 2em;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-content h3 {
    font-size: 1.4em;
    color: var(--secondary-color);
    margin-bottom: 1em;
    font-weight: 700;
}

.project-content p {
    color: var(--text-light);
    margin-bottom: 1.5em;
    line-height: 1.7;
    flex-grow: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75em;
    margin-bottom: 1.5em;
}

.tag {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.15), rgba(255, 107, 53, 0.1));
    color: var(--primary-dark);
    padding: 0.4em 1em;
    border-radius: 50px;
    font-size: 0.85em;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.4em;
    border: 1px solid rgba(255, 193, 7, 0.3);
    transition: var(--transition);
}

.tag:hover {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.25), rgba(255, 107, 53, 0.2));
    transform: translateY(-2px);
    box-shadow: 0 2px 8px rgba(255, 193, 7, 0.2);
}

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

.project-features li {
    color: var(--text-dark);
    margin-bottom: 0.8em;
    display: flex;
    align-items: flex-start;
    gap: 0.75em;
}

.project-features i {
    color: var(--primary-color);
    margin-top: 0.2em;
    flex-shrink: 0;
}

/* ===== Expertise Section ===== */
.expertise-section {
    padding: 6em 0;
    background: 
        linear-gradient(180deg, rgba(255, 193, 7, 0.15) 0%, rgba(255, 255, 255, 0.88) 35%, rgba(0, 120, 180, 0.12) 75%, rgba(255, 255, 255, 0.9) 100%),
        url('images/bg/pexels-pixabay-270549.jpg') center/cover no-repeat fixed;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5em;
}

.expertise-category {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(248, 249, 250, 0.95));
    padding: 2em;
    border-radius: var(--border-radius);
    border: 2px solid transparent;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.expertise-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-orange));
    transform: scaleX(0);
    transition: var(--transition);
}

.expertise-category:nth-child(2)::before {
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
}

.expertise-category:nth-child(3)::before {
    background: linear-gradient(90deg, var(--accent-green), var(--accent-blue));
}

.expertise-category:nth-child(4)::before {
    background: linear-gradient(90deg, var(--accent-orange), var(--primary-color));
}

.expertise-category:nth-child(5)::before {
    background: linear-gradient(90deg, var(--accent-purple), var(--primary-dark));
}

.expertise-category:nth-child(6)::before {
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
}

.expertise-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.expertise-category:hover::before {
    transform: scaleX(1);
}

.expertise-category h3 {
    font-size: 1.3em;
    color: var(--secondary-color);
    margin-bottom: 1.5em;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75em;
}

.expertise-category h3 i {
    color: var(--primary-color);
}

.expertise-items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75em;
}

.expertise-item {
    background: var(--bg-white);
    color: var(--text-dark);
    padding: 0.6em 1.2em;
    border-radius: 8px;
    font-size: 0.9em;
    font-weight: 500;
    border: 1px solid #e9ecef;
    transition: var(--transition);
}

.expertise-item:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-orange));
    color: var(--text-white);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 2px 8px rgba(255, 193, 7, 0.3);
}

.expertise-category:nth-child(2) .expertise-item:hover {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
}

.expertise-category:nth-child(3) .expertise-item:hover {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
}

.expertise-category:nth-child(4) .expertise-item:hover {
    background: linear-gradient(135deg, var(--accent-orange), var(--primary-color));
}

.expertise-category:nth-child(5) .expertise-item:hover {
    background: linear-gradient(135deg, var(--accent-purple), var(--primary-dark));
}

.expertise-category:nth-child(6) .expertise-item:hover {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-green));
}

/* ===== About Section ===== */
.about-section {
    padding: 6em 0;
    background: 
        linear-gradient(135deg, rgba(0, 100, 160, 0.78) 0%, rgba(255, 193, 7, 0.12) 50%, rgba(0, 140, 200, 0.75) 100%),
        url('images/bg/pexels-olly-789822.jpg') center/cover no-repeat fixed;
}

.about-section .section-title {
    color: var(--text-white);
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
}

.about-section .section-subtitle {
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.3);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text p {
    font-size: 1.1em;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 1.5em;
    line-height: 1.8;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2em;
    margin-top: 3em;
}

.highlight-item {
    text-align: center;
    padding: 2em;
    background: var(--bg-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.highlight-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.highlight-item i {
    font-size: 3em;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5em;
}

.highlight-item:nth-child(2) i {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight-item:nth-child(3) i {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight-item h4 {
    font-size: 1.3em;
    color: var(--secondary-color);
    margin-bottom: 0.75em;
    font-weight: 600;
}

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

/* ===== Contact Section ===== */
.contact-section {
    padding: 6em 0;
    background: 
        linear-gradient(180deg, rgba(255, 193, 7, 0.2) 0%, rgba(255, 255, 255, 0.9) 40%, rgba(0, 120, 180, 0.15) 80%, rgba(255, 255, 255, 0.88) 100%),
        url('images/bg/pexels-bertellifotografia-34552797.jpg') center/cover no-repeat fixed;
}

.contact-content {
    max-width: 900px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2em;
    margin-bottom: 3em;
}

.contact-item {
    display: flex;
    gap: 1.5em;
    padding: 2em;
    background: var(--bg-light);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.contact-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-orange));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(255, 193, 7, 0.3);
}

.contact-item:nth-child(2) .contact-icon {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
}

.contact-item:nth-child(3) .contact-icon {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
}

.contact-icon i {
    font-size: 1.5em;
    color: var(--text-white);
}

.contact-details h4 {
    font-size: 1.1em;
    color: var(--secondary-color);
    margin-bottom: 0.5em;
    font-weight: 600;
}

.contact-details p,
.contact-details a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

.contact-details a:hover {
    color: var(--primary-color);
}

.contact-cta {
    text-align: center;
    padding: 3em;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-orange) 50%, var(--primary-dark) 100%);
    border-radius: var(--border-radius);
    color: var(--text-white);
    box-shadow: 0 8px 30px rgba(255, 193, 7, 0.3);
}

.contact-cta p {
    font-size: 1.5em;
    margin-bottom: 1.5em;
    font-weight: 600;
}

/* ===== Footer ===== */
footer {
    background: var(--secondary-color);
    color: var(--text-white);
    padding: 4em 2em 2em;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3em;
    max-width: 1200px;
    margin: 0 auto 3em;
}

.footer-section h4 {
    color: var(--primary-color);
    margin-bottom: 1em;
    font-size: 1.2em;
    font-weight: 600;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75em;
    margin-bottom: 1em;
}

.footer-logo-image {
    height: 35px;
    width: auto;
}

.footer-logo span {
    font-size: 1.5em;
    color: var(--primary-color);
    font-weight: 700;
    font-family: 'Space Grotesk', 'Noto Sans TC', sans-serif;
    letter-spacing: -1px;
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1.5em;
}

.footer-social {
    display: flex;
    gap: 1em;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-social a:hover {
    background: var(--primary-color);
    color: var(--secondary-color);
    transform: translateY(-3px);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.75em;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
    display: inline-block;
}

.footer-section ul li a:hover {
    color: var(--primary-color);
    transform: translateX(5px);
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 0.75em;
    color: rgba(255, 255, 255, 0.8);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2em;
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom p {
    margin-bottom: 0.5em;
}

.footer-developed {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5em;
}

.footer-developed i {
    color: #e74c3c;
    animation: heartbeat 1.5s infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* ===== Responsive Design ===== */
@media (max-width: 968px) {
    .project.featured {
        grid-column: span 1;
    }

    .services-grid,
    .projects-grid,
    .expertise-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    nav {
        flex-wrap: wrap;
        padding: 1em;
    }

    .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 1em;
        padding-top: 1em;
    }

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

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

    .hero {
        padding: 6em 1.5em 4em;
    }

    .hero h1 {
        font-size: 2.5em;
    }

    .hero p {
        font-size: 1.1em;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1em;
    }

    .section-title {
        font-size: 2em;
    }

    .section-subtitle {
        font-size: 1em;
    }

    .container {
        padding: 0 1em;
    }

    .services-grid,
    .projects-grid,
    .expertise-grid,
    .about-highlights,
    .contact-info {
        grid-template-columns: 1fr;
    }

    .project-image-wrapper {
        height: 200px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2em;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2em;
    }

    .hero p {
        font-size: 1em;
    }

    .stat-number {
        font-size: 2em;
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }

    .cta-button {
        padding: 0.9em 2em;
        font-size: 0.95em;
    }
}

/* ===== Animations ===== */
.animate {
    animation: fadeInUp 0.6s ease;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}