/* ========================================
   嘿火软件 - Premium Dark Theme Styles
   ======================================== */

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-glass: rgba(255, 255, 255, 0.05);
    --border: rgba(255, 255, 255, 0.08);
    --text-primary: #f0f0f5;
    --text-secondary: #9898a8;
    --text-muted: #5a5a6e;
    --accent-cyan: #00d4ff;
    --accent-purple: #7c3aed;
    --accent-gradient: linear-gradient(135deg, #00d4ff 0%, #7c3aed 50%, #ec4899 100%);
    --glow-cyan: 0 0 40px rgba(0, 212, 255, 0.3);
    --glow-purple: 0 0 40px rgba(124, 58, 237, 0.3);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'Inter', 'Noto Sans SC', -apple-system, sans-serif;
}

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: rgba(0, 212, 255, 0.3);
    color: #fff;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Cursor Glow */
.cursor-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s;
    opacity: 0;
}

body:hover .cursor-glow {
    opacity: 1;
}

/* Page Loader */
.page-loader {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.6s, visibility 0.6s;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-ring {
    width: 48px;
    height: 48px;
    border: 2px solid var(--border);
    border-top-color: var(--accent-cyan);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loader-text {
    margin-top: 20px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 4px;
    color: var(--text-secondary);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon svg,
.logo-icon .logo-img {
    width: 36px;
    height: 36px;
}

.logo-icon .logo-img {
    width: auto;
    max-width: 140px;
    max-height: 36px;
    object-fit: contain;
}

.footer-logo .logo-icon .logo-img {
    max-width: 120px;
    max-height: 32px;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    display: block;
    padding: 8px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

.nav-cta {
    padding: 10px 24px;
    background: var(--accent-gradient);
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-cta:hover {
    box-shadow: var(--glow-cyan);
    transform: translateY(-2px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.btn svg {
    width: 18px;
    height: 18px;
    transition: transform 0.3s;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
}

.btn-primary:hover {
    box-shadow: var(--glow-cyan);
    transform: translateY(-2px);
}

.btn-primary:hover svg {
    transform: translateX(4px);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--accent-cyan);
    background: rgba(0, 212, 255, 0.05);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#heroCanvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 50%, transparent 0%, var(--bg-primary) 70%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 0 24px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-size: clamp(48px, 8vw, 88px);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -2px;
    margin-bottom: 24px;
}

.title-line {
    display: block;
}

.hero-subtitle {
    font-size: clamp(16px, 2vw, 18px);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 64px;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-suffix {
    font-size: 24px;
    font-weight: 700;
    color: var(--accent-cyan);
}

.stat-label {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 12px;
    animation: bounce 2s infinite;
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid var(--border);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--accent-cyan);
    border-radius: 2px;
    animation: scrollDown 2s infinite;
}

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

@keyframes scrollDown {
    0% { opacity: 1; top: 8px; }
    100% { opacity: 0; top: 24px; }
}

/* Sections */
.section {
    padding: 120px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--accent-cyan);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto;
}

/* Services */
.services {
    background: var(--bg-secondary);
}

.services-highlight {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.highlight-item {
    position: relative;
    padding: 32px 28px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.06) 0%, rgba(124, 58, 237, 0.06) 100%);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.highlight-item:hover {
    border-color: rgba(0, 212, 255, 0.35);
    transform: translateY(-4px);
    box-shadow: var(--glow-cyan);
}

.highlight-num {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--accent-cyan);
    margin-bottom: 16px;
}

.highlight-item h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.highlight-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
}

.service-card {
    position: relative;
    padding: 40px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    cursor: default;
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--card-accent, var(--accent-cyan));
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.service-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
}

.service-glow {
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, var(--card-accent, var(--accent-cyan)) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.5s;
    pointer-events: none;
}

.service-card:hover .service-glow {
    opacity: 0.06;
}

/* Cases */
.cases-filter {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.filter-btn {
    padding: 10px 24px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    border-radius: 100px;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--accent-gradient);
    border-color: transparent;
    color: #fff;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 32px;
}

.case-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    transform-style: preserve-3d;
    perspective: 1000px;
}

.case-card:hover {
    transform: translateY(-12px) rotateX(2deg);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5), var(--glow-cyan);
}

.case-card.hidden {
    display: none;
}

.case-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s;
}

.case-card:hover .case-image img {
    transform: scale(1.08);
}

.case-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10, 10, 15, 0.8) 0%, transparent 50%);
    display: flex;
    align-items: flex-end;
    padding: 20px;
}

.case-category {
    padding: 6px 14px;
    background: var(--accent-gradient);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    border-radius: 100px;
}

.case-body {
    padding: 28px;
}

.case-body h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.case-body p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 16px;
}

.case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.case-tag {
    padding: 4px 12px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.15);
    color: var(--accent-cyan);
    font-size: 12px;
    border-radius: 100px;
}

.case-stats {
    display: flex;
    gap: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.case-stat-val {
    display: block;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.case-stat-key {
    font-size: 11px;
    color: var(--text-muted);
}

.case-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.03), transparent);
    transition: left 0.6s;
    pointer-events: none;
}

.case-card:hover .case-shine {
    left: 100%;
}

/* About */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 400px;
}

.about-3d-card {
    width: 280px;
    height: 360px;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.1s;
    cursor: pointer;
}

.card-face {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    overflow: hidden;
}

.card-front {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(124, 58, 237, 0.1) 100%);
    backdrop-filter: blur(20px);
}

.card-back {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.15) 0%, rgba(236, 72, 153, 0.1) 100%);
    transform: rotateY(180deg);
}

.card-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 40px;
    text-align: center;
}

.card-year {
    font-size: 12px;
    letter-spacing: 3px;
    color: var(--accent-cyan);
    margin-bottom: 24px;
}

.card-inner h3 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 8px;
}

.card-inner p {
    color: var(--text-secondary);
    font-size: 14px;
}

.card-metric {
    margin: 16px 0;
}

.card-metric strong {
    display: block;
    font-size: 36px;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card-metric span {
    font-size: 13px;
    color: var(--text-muted);
}

.about-orbit {
    position: absolute;
    width: 400px;
    height: 400px;
    border: 1px dashed rgba(0, 212, 255, 0.15);
    border-radius: 50%;
    animation: orbitSpin 20s linear infinite;
}

.orbit-dot {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--accent-cyan);
    border-radius: 50%;
    top: -5px;
    left: 50%;
    transform-origin: 0 205px;
    animation: orbitSpin 8s linear infinite;
    animation-delay: var(--delay, 0s);
    box-shadow: 0 0 12px var(--accent-cyan);
}

@keyframes orbitSpin {
    to { transform: rotate(360deg); }
}

.about-text {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 32px;
}

.about-features {
    list-style: none;
    margin-bottom: 32px;
}

.about-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    color: var(--text-secondary);
    font-size: 15px;
}

.about-features svg {
    width: 20px;
    height: 20px;
    color: var(--accent-cyan);
    flex-shrink: 0;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tech-stack span {
    padding: 6px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 13px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.tech-stack span:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

/* Contact */
.contact {
    background: var(--bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 48px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.info-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.info-card:hover {
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateX(8px);
}

.info-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.info-icon svg {
    width: 22px;
    height: 22px;
    color: var(--accent-cyan);
}

.info-card h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
}

.info-card p {
    color: var(--text-secondary);
    font-size: 14px;
}

.contact-form {
    padding: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

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

.form-message {
    margin-top: 16px;
    padding: 14px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
}

.form-message.success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #22c55e;
}

.form-message.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

.spinner {
    width: 18px;
    height: 18px;
    animation: spin 0.8s linear infinite;
}

/* Footer */
.footer {
    padding: 80px 0 32px;
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-logo .logo-icon svg {
    width: 32px;
    height: 32px;
}

.footer-desc {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}

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

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

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

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

.footer-contact p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 8px;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 13px;
}

.footer-icp-link {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-icp-link:hover {
    color: var(--accent-cyan);
    text-decoration: underline;
}

/* Chat Widget */
.chat-widget {
    position: fixed;
    bottom: 32px;
    right: 32px;
    z-index: 9998;
}

.chat-toggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--accent-gradient);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 32px rgba(0, 212, 255, 0.3);
    transition: var(--transition);
    position: relative;
}

.chat-toggle:hover {
    transform: scale(1.08);
    box-shadow: 0 12px 40px rgba(0, 212, 255, 0.4);
}

.chat-toggle svg {
    width: 26px;
    height: 26px;
    color: #fff;
}

.chat-icon-close {
    display: none;
}

.chat-widget.open .chat-icon-open {
    display: none;
}

.chat-widget.open .chat-icon-close {
    display: block;
}

.chat-pulse {
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px solid var(--accent-cyan);
    animation: chatPulse 2s infinite;
}

@keyframes chatPulse {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(1.4); opacity: 0; }
}

.chat-panel {
    position: absolute;
    bottom: 76px;
    right: 0;
    width: 360px;
    background: rgba(18, 18, 26, 0.95);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.chat-widget.open .chat-panel {
    transform: scale(1) translateY(0);
    opacity: 1;
    visibility: visible;
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px;
    background: rgba(0, 212, 255, 0.05);
    border-bottom: 1px solid var(--border);
}

.chat-avatar {
    width: 40px;
    height: 40px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-avatar svg {
    width: 24px;
    height: 24px;
    color: #fff;
}

.chat-header h4 {
    font-size: 15px;
    font-weight: 600;
}

.chat-status {
    font-size: 12px;
    color: #22c55e;
}

.chat-messages {
    padding: 20px;
    max-height: 240px;
    overflow-y: auto;
}

.chat-msg {
    margin-bottom: 12px;
}

.chat-msg.bot p {
    display: inline-block;
    padding: 12px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 12px 12px 12px 4px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.chat-msg.user {
    text-align: right;
}

.chat-msg.user p {
    display: inline-block;
    padding: 12px 16px;
    background: rgba(0, 212, 255, 0.15);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 12px 12px 4px 12px;
    font-size: 14px;
    color: var(--text-primary);
}

.chat-form {
    padding: 16px 20px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.chat-form input,
.chat-form textarea {
    width: 100%;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 13px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.3s;
}

.chat-form input:focus,
.chat-form textarea:focus {
    border-color: var(--accent-cyan);
}

.chat-form button {
    padding: 12px;
    background: var(--accent-gradient);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition);
}

.chat-form button:hover {
    box-shadow: var(--glow-cyan);
}

/* AOS Animations */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

[data-aos="fade-right"] {
    transform: translateX(-30px);
}

[data-aos="fade-right"].aos-animate {
    transform: translateX(0);
}

[data-aos="fade-left"] {
    transform: translateX(30px);
}

[data-aos="fade-left"].aos-animate {
    transform: translateX(0);
}

/* Responsive */
@media (max-width: 1024px) {
    .services-highlight {
        grid-template-columns: 1fr;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

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

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

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(10, 10, 15, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 80px 32px 32px;
        gap: 4px;
        transition: right 0.4s;
        border-left: 1px solid var(--border);
    }

    .nav-links.open {
        right: 0;
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-toggle.open span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.open span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.open span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .nav-cta {
        display: none;
    }

    .hero-stats {
        gap: 20px;
    }

    .stat-divider {
        display: none;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .chat-panel {
        width: calc(100vw - 48px);
        right: -8px;
    }

    .section {
        padding: 80px 0;
    }
}

@media (max-width: 480px) {
    .hero-title {
        letter-spacing: -1px;
    }

    .contact-form {
        padding: 24px;
    }
}