/* ============================================
   NEDTEX TECH v2 - Official Corporate Website
   Blue Logo Color Scheme
   ============================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
    /* Updated to match blue logo (#3B7EE8) */
    --color-primary: #1a56db;
    --color-primary-dark: #0f2744;
    --color-primary-darker: #0a1b30;
    --color-primary-light: #3b7ee8;
    --color-accent: #3b7ee8;
    --color-accent-light: #5a9aff;

    --color-bg-white: #ffffff;
    --color-bg-light: #f4f7fc;
    --color-bg-section: #edf2fa;
    --color-bg-dark: #0a1628;
    --color-bg-hero: #0d1f3c;

    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-text-lighter: #94a3b8;
    --color-text-white: #ffffff;
    --color-text-hero: rgba(255,255,255,0.85);

    --color-border: #e2e8f0;
    --color-border-light: #edf2fa;

    --font-en: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-zh: 'Noto Sans TC', 'Microsoft JhengHei', sans-serif;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-zh);
    color: var(--color-text);
    background: var(--color-bg-white);
    line-height: 1.7;
    overflow-x: hidden;
}

html[lang="en"] body {
    font-family: var(--font-en);
}

/* Language switching */
html[lang="en"] .lang-zh { display: none !important; }
html[lang="zh-TW"] .lang-en { display: none !important; }

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

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

ul { list-style: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    letter-spacing: 0.02em;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-text-white);
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background: #2563eb;
    border-color: #2563eb;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(59,126,232,0.35);
}

.btn-outline {
    background: transparent;
    color: var(--color-text-white);
    border-color: rgba(255,255,255,0.4);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.7);
}

.btn-full {
    width: 100%;
}

/* ========== NAVIGATION ========== */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: all var(--transition);
}

#navbar.scrolled {
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: 0 1px 20px rgba(0,0,0,0.08);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-text-white);
    z-index: 10;
}

#navbar.scrolled .nav-logo {
    color: var(--color-primary-dark);
}

.logo-mark {
    flex-shrink: 0;
    height: 32px;
    width: auto;
    object-fit: contain;
    image-rendering: -webkit-optimize-contrast;
}

.logo-mark--dark {
    display: none;
}

#navbar.scrolled .logo-mark {
    display: none;
}

#navbar.scrolled .logo-mark--dark {
    display: block;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-en {
    font-family: var(--font-en);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.logo-zh {
    font-size: 0.72rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    opacity: 0.8;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 0.88rem;
    font-weight: 500;
    color: rgba(255,255,255,0.85);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--color-text-white);
    background: rgba(255,255,255,0.1);
}

#navbar.scrolled .nav-link {
    color: var(--color-text-light);
}

#navbar.scrolled .nav-link:hover,
#navbar.scrolled .nav-link.active {
    color: var(--color-primary);
    background: var(--color-bg-light);
}

.nav-link.active {
    color: var(--color-text-white) !important;
    background: rgba(255,255,255,0.12);
}

.lang-switch {
    padding: 6px 16px;
    font-size: 0.82rem;
    font-weight: 600;
    font-family: var(--font-en);
    color: rgba(255,255,255,0.9);
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    margin-left: 8px;
    letter-spacing: 0.05em;
}

.lang-switch:hover {
    background: rgba(255,255,255,0.2);
    border-color: rgba(255,255,255,0.4);
}

#navbar.scrolled .lang-switch {
    color: var(--color-primary);
    background: var(--color-bg-light);
    border-color: var(--color-border);
}

/* Nav Dropdown */
.nav-dropdown {
    position: relative;
    margin-left: 4px;
}

.nav-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    font-size: 0.82rem;
    font-weight: 600;
    color: rgba(255,255,255,0.9);
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.nav-dropdown-toggle:hover {
    background: rgba(255,255,255,0.2);
    border-color: rgba(255,255,255,0.4);
}

#navbar.scrolled .nav-dropdown-toggle {
    color: var(--color-primary);
    background: var(--color-bg-light);
    border-color: var(--color-border);
}

#navbar.scrolled .nav-dropdown-toggle:hover {
    background: var(--color-bg-section);
}

.nav-dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 200px;
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border-light);
    padding: 8px;
    z-index: 100;
}

.nav-dropdown.active .nav-dropdown-menu {
    display: block;
}

.nav-dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--color-text);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    white-space: nowrap;
}

.nav-dropdown-item:hover {
    background: var(--color-bg-light);
    color: var(--color-primary);
}

.dropdown-icon {
    font-size: 1rem;
    line-height: 1;
}

.nav-dropdown-toggle svg {
    transition: transform var(--transition);
}

.nav-dropdown.active .nav-dropdown-toggle svg {
    transform: rotate(180deg);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 10;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-white);
    border-radius: 2px;
    transition: all var(--transition);
}

#navbar.scrolled .hamburger span {
    background: var(--color-text);
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translateY(7px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translateY(-7px); }

/* ========== HERO SECTION ========== */
#hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, #0a1b30 0%, #0f2744 30%, #1a4a7a 60%, #2564b0 100%);
    z-index: 0;
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(59,126,232,0.18) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(90,154,255,0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 60% 80%, rgba(59,126,232,0.08) 0%, transparent 50%);
}

.hero-particles {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.15) 50%, transparent 50%),
        radial-gradient(1px 1px at 30% 60%, rgba(255,255,255,0.1) 50%, transparent 50%),
        radial-gradient(1px 1px at 50% 30%, rgba(255,255,255,0.12) 50%, transparent 50%),
        radial-gradient(1px 1px at 70% 70%, rgba(255,255,255,0.08) 50%, transparent 50%),
        radial-gradient(1px 1px at 90% 40%, rgba(255,255,255,0.1) 50%, transparent 50%),
        radial-gradient(2px 2px at 15% 80%, rgba(255,255,255,0.06) 50%, transparent 50%),
        radial-gradient(2px 2px at 85% 10%, rgba(255,255,255,0.06) 50%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 120px 24px 100px;
    max-width: 900px;
}

.hero-eyebrow {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-accent-light);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 24px;
    padding: 8px 20px;
    border: 1px solid rgba(59,126,232,0.35);
    border-radius: 50px;
    background: rgba(59,126,232,0.1);
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 800;
    color: var(--color-text-white);
    line-height: 1.3;
    margin-bottom: 24px;
    letter-spacing: 0.02em;
}

html[lang="en"] .hero-title {
    font-family: var(--font-en);
    font-size: clamp(1.8rem, 4.5vw, 3rem);
    letter-spacing: -0.01em;
}

.hero-subtitle {
    font-size: clamp(0.95rem, 1.8vw, 1.1rem);
    color: var(--color-text-hero);
    line-height: 1.8;
    margin-bottom: 40px;
    font-weight: 300;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    z-index: 3;
    line-height: 0;
}

.hero-wave svg {
    width: 100%;
    height: 80px;
}

/* ========== SECTION HEADERS ========== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 800;
    color: var(--color-text);
    line-height: 1.3;
    margin-bottom: 16px;
}

html[lang="en"] .section-title {
    font-family: var(--font-en);
}

.section-desc {
    font-size: 1.05rem;
    color: var(--color-text-light);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ========== ABOUT SECTION ========== */
#about {
    padding: 100px 0;
    background: var(--color-bg-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-content p {
    font-size: 1.02rem;
    line-height: 1.9;
    color: var(--color-text);
    margin-bottom: 20px;
}

.about-content p:last-child {
    margin-bottom: 0;
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.highlight-card {
    padding: 28px;
    background: var(--color-bg-light);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-accent);
    transition: all var(--transition);
}

.highlight-card:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.highlight-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: rgba(59,126,232,0.1);
    color: var(--color-accent);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
}

.highlight-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 6px;
}

.highlight-card p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ========== SERVICES SECTION ========== */
#services {
    padding: 100px 0;
    background: var(--color-bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    padding: 40px 28px 36px;
    position: relative;
    overflow: hidden;
    transition: all var(--transition);
    border: 1px solid var(--color-border-light);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.service-card--highlight {
    background: linear-gradient(160deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    border-color: transparent;
}

.service-card--highlight .service-icon,
.service-card--highlight .service-number,
.service-card--highlight .service-title,
.service-card--highlight .service-list li {
    color: var(--color-text-white);
}

.service-card--highlight .service-icon {
    background: rgba(255,255,255,0.12);
}

.service-card--highlight .service-list li::before {
    background: rgba(255,255,255,0.5);
}

.service-card--highlight:hover {
    background: linear-gradient(160deg, #0d2a4a 0%, #2564b0 100%);
}

.service-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    background: var(--color-bg-light);
    color: var(--color-primary);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
}

.service-number {
    display: block;
    font-family: var(--font-en);
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--color-text-lighter);
    letter-spacing: 0.1em;
    margin-bottom: 12px;
}

.service-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 20px;
    line-height: 1.4;
}

.service-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.service-list li {
    font-size: 0.88rem;
    color: var(--color-text-light);
    padding-left: 16px;
    position: relative;
    line-height: 1.5;
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 5px;
    height: 5px;
    background: var(--color-accent);
    border-radius: 50%;
}

/* ========== PROJECTS SECTION ========== */
#projects {
    padding: 100px 0;
    background: var(--color-bg-white);
}

.projects-single {
    max-width: 900px;
    margin: 0 auto;
}

.project-card {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.project-card--featured {
    display: flex;
    flex-direction: column;
}

/* Project Photo Gallery */
.project-gallery {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 0 12px 12px;
}

.gallery-main {
    width: 100%;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: #f0f2f5;
}

.gallery-main-img {
    width: 100%;
    display: block;
    object-fit: contain;
    transition: opacity 0.3s ease;
}

.gallery-thumbs {
    display: flex;
    gap: 8px;
}

.gallery-thumb {
    flex: 1;
    aspect-ratio: 4 / 3;
    border-radius: 6px;
    overflow: hidden;
    border: 2px solid transparent;
    cursor: pointer;
    padding: 0;
    background: none;
    transition: all 0.2s ease;
    opacity: 0.6;
}

.gallery-thumb:hover {
    opacity: 0.9;
}

.gallery-thumb.active {
    border-color: var(--color-primary);
    opacity: 1;
}

.gallery-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.project-content {
    padding: 28px;
}

.project-card--featured .project-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 36px 40px;
}

.project-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-accent);
    background: rgba(59,126,232,0.08);
    padding: 4px 12px;
    border-radius: 50px;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.project-status {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    color: #059669;
    background: rgba(5,150,105,0.08);
    padding: 4px 12px;
    border-radius: 50px;
    margin-left: 8px;
    margin-bottom: 12px;
}

.project-content h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.5;
    margin-bottom: 8px;
}

.project-details {
    display: flex;
    gap: 24px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}

.project-detail {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.detail-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-text-lighter);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.detail-value {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--color-text);
}

.project-desc {
    font-size: 0.92rem;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-top: 16px;
}

/* ========== AI PLATFORM SECTION ========== */
#ai-platform {
    padding: 100px 0;
    background: linear-gradient(175deg, var(--color-bg-light) 0%, #dce8f8 100%);
}

/* Screenshots */
.ai-screenshots {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 60px;
}

.screenshot-card {
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.screenshot-card:hover {
    box-shadow: var(--shadow-md);
    border-color: rgba(59,126,232,0.2);
}

.screenshot-label {
    padding: 16px 24px;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    background: var(--color-bg-light);
    border-bottom: 1px solid var(--color-border);
}

.screenshot-card img {
    width: 100%;
    height: auto;
    display: block;
}

/* Features & Metrics */
.ai-showcase {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
    align-items: start;
}

.ai-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.ai-feature {
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    padding: 28px 32px;
    border: 1px solid var(--color-border-light);
    transition: all var(--transition);
}

.ai-feature:hover {
    box-shadow: var(--shadow-md);
    border-color: rgba(59,126,232,0.2);
}

.ai-feature-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 12px;
}

.ai-feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(59,126,232,0.08);
    color: var(--color-accent);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.ai-feature h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text);
}

.ai-feature p {
    font-size: 0.92rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

.ai-metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    position: sticky;
    top: 100px;
}

.ai-metric-card {
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    text-align: center;
    border: 1px solid var(--color-border-light);
    transition: all var(--transition);
}

.ai-metric-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.metric-value {
    font-family: var(--font-en);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 8px;
    line-height: 1.2;
}

.metric-small {
    font-size: 0.9rem;
    font-weight: 600;
    margin-left: 2px;
}

.metric-label {
    font-size: 0.82rem;
    color: var(--color-text-light);
    font-weight: 500;
    line-height: 1.4;
}

/* Tech Stack Bar */
.ai-tech-stack {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-top: 48px;
    padding: 20px;
    background: var(--color-primary-dark);
    border-radius: var(--radius-md);
}

.ai-tech-stack span {
    font-family: var(--font-en);
    font-size: 0.82rem;
    font-weight: 500;
    color: rgba(255,255,255,0.8);
    padding: 6px 16px;
    background: rgba(255,255,255,0.08);
    border-radius: 50px;
    border: 1px solid rgba(255,255,255,0.1);
}

/* ========== CONTACT SECTION ========== */
#contact {
    padding: 100px 0;
    background: var(--color-bg-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(59,126,232,0.08);
    color: var(--color-accent);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 4px;
}

.contact-item p,
.contact-item a {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.contact-item a:hover {
    color: var(--color-accent);
}

.contact-form-wrapper {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border-light);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--color-text);
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(59,126,232,0.1);
    background: var(--color-bg-white);
}

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

/* ========== FOOTER ========== */
#footer {
    background: var(--color-bg-dark);
    padding: 60px 0 0;
    color: rgba(255,255,255,0.7);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.2fr;
    gap: 60px;
    padding-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-text-white);
    margin-bottom: 16px;
}

.footer-logo img {
    height: 28px;
    width: auto;
    image-rendering: -webkit-optimize-contrast;
}

.footer-logo span {
    font-family: var(--font-en);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.footer-desc {
    font-size: 0.9rem;
    line-height: 1.7;
    opacity: 0.7;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--color-text-white);
    margin-bottom: 20px;
    letter-spacing: 0.05em;
}

.footer-links a {
    display: block;
    font-size: 0.88rem;
    color: rgba(255,255,255,0.6);
    padding: 6px 0;
    transition: all var(--transition);
}

.footer-links a:hover {
    color: var(--color-text-white);
    padding-left: 4px;
}

.footer-contact p {
    font-size: 0.88rem;
    color: rgba(255,255,255,0.6);
    line-height: 1.8;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.4);
}

/* ========== ANIMATIONS ========== */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-animate].visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========== RESPONSIVE DESIGN ========== */

/* Tablet */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .ai-showcase {
        grid-template-columns: 1fr;
    }


    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 360px;
        height: 100vh;
        background: var(--color-bg-white);
        flex-direction: column;
        align-items: flex-start;
        padding: 100px 32px 40px;
        gap: 4px;
        box-shadow: var(--shadow-xl);
        transition: right var(--transition);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-menu .nav-link {
        color: var(--color-text);
        font-size: 1.05rem;
        padding: 12px 16px;
        width: 100%;
    }

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

    .nav-menu .lang-switch {
        color: var(--color-primary);
        background: var(--color-bg-light);
        border-color: var(--color-border);
        margin-left: 0;
        margin-top: 16px;
    }

    .nav-dropdown {
        width: 100%;
        margin-left: 0;
        margin-top: 8px;
    }

    .nav-dropdown-toggle {
        color: var(--color-primary);
        background: var(--color-bg-light);
        border-color: var(--color-border);
        width: 100%;
        justify-content: space-between;
        padding: 10px 16px;
        font-size: 0.95rem;
    }

    .nav-dropdown-menu {
        position: static;
        box-shadow: none;
        border: none;
        padding: 4px 0 0 12px;
        background: transparent;
    }

    .nav-dropdown-item {
        font-size: 0.92rem;
        padding: 10px 14px;
    }

    .hamburger {
        display: flex;
    }

    .hero-content {
        padding: 100px 20px 80px;
    }

    .hero-subtitle br {
        display: none;
    }

    .hero-title br {
        display: none;
    }

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

    .project-card--featured .project-content {
        padding: 24px;
    }

    .project-details {
        flex-direction: column;
        gap: 12px;
    }

    .gallery-thumbs {
        gap: 4px;
    }

    .gallery-thumb {
        border-width: 1.5px;
    }

    .ai-features {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .section-header {
        margin-bottom: 40px;
    }

    #about, #services, #projects, #ai-platform, #contact {
        padding: 60px 0;
    }

    .ai-tech-stack {
        gap: 8px;
    }

    .ai-tech-stack span {
        font-size: 0.75rem;
        padding: 4px 12px;
    }
}

/* Small mobile */
@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }

}