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

:root {
    --black-bg: #000000;
    --dark-surface: #1c1c1e;
    --accent-blue: #0a84ff;
    --text-primary: #ffffff;
    --text-secondary: #98989d;
    --text-tertiary: #6e6e73;
    --separator: rgba(84, 84, 88, 0.65);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', sans-serif;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    color: var(--text-primary);
    background-color: var(--black-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 980px;
    margin: 0 auto;
    padding: 0 22px;
}

/* Header */
.header {
    background: rgba(0, 0, 0, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--separator);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header.scrolled {
    background: rgba(0, 0, 0, 0.88);
    border-bottom-color: var(--separator);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 22px;
    height: 48px;
    max-width: 980px;
    margin: 0 auto;
}

.nav-brand {
    font-size: 1.42857rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-size: 0.85714rem;
    font-weight: 400;
    letter-spacing: -0.01em;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.nav-links a:hover {
    opacity: 1;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    margin: 5px 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Hero Section */
.hero {
    background: var(--black-bg);
    color: var(--text-primary);
    padding: 60px 0 80px;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero .container {
    width: 100%;
    max-width: 692px;
}

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

.hero-photo {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 48px;
    line-height: 1.08333;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 24px;
    line-height: 1.16667;
    font-weight: 600;
    letter-spacing: 0.009em;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.hero-company {
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.hero-social {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.hero-chatbot-centered {
    width: 100%;
    max-width: 800px;
}

.hero-chatbot-centered .chatbot-card {
    background: rgba(255, 255, 255, 0.02);
    border-radius: 24px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.hero-chatbot-centered .chatbot-card:focus-within {
    background: rgba(255, 255, 255, 0.04);
}

.social-icon-link {
    color: var(--text-primary);
    text-decoration: none;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    transition: all 0.2s ease;
}

.social-icon-link:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: scale(1.04);
}

.social-icon-link svg {
    width: 20px;
    height: 20px;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Chatbot Card */
.chatbot-card {
    background: rgba(255, 255, 255, 0.02);
    border-radius: 24px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.chatbot-card:focus-within {
    background: rgba(255, 255, 255, 0.04);
}

.chatbot-header {
    padding: 24px 24px 16px;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.chatbot-header h2 {
    font-size: 24px;
    line-height: 1.16667;
    font-weight: 600;
    letter-spacing: 0.009em;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.chatbot-header p {
    font-size: 12px;
    line-height: 1.33337;
    font-weight: 400;
    letter-spacing: -0.01em;
    color: var(--text-secondary);
    margin: 0;
}

/* Chatbot Messages */

.chatbot-messages-main {
    padding: 24px;
    max-height: 450px;
    overflow-y: auto;
    min-height: 200px;
}

.chatbot-messages-main .chat-message {
    margin-bottom: 12px;
    padding: 12px 16px;
    border-radius: 18px;
    max-width: 85%;
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    word-wrap: break-word;
    overflow-wrap: break-word;
    white-space: normal;
}

.chatbot-messages-main .user-message {
    background: var(--accent-blue);
    color: white;
    margin-left: auto;
    text-align: right;
}

.chatbot-messages-main .bot-message {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    margin-right: auto;
}

.chatbot-input-main {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

#chat-input-main {
    flex: 1;
    padding: 10px 16px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

#chat-input-main::placeholder {
    color: var(--text-secondary);
}

#chat-input-main:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent-blue);
}

.btn-send-main {
    padding: 10px;
    background: var(--accent-blue);
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
}

.btn-send-main:hover:not(:disabled) {
    background: #0077ED;
}

.btn-send-main:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-send-main svg {
    width: 20px;
    height: 20px;
}

/* Suggestion Pills */
.suggestion-pills {
    display: flex;
    gap: 10px;
    margin-top: 16px;
    flex-wrap: wrap;
    justify-content: center;
}

.suggestion-pill {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 8px 16px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    flex-shrink: 0;
}

.suggestion-pill:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    transform: translateY(-2px);
}

.suggestion-pill:active {
    transform: translateY(0);
}

/* About Section */
.about-content {
    max-width: 692px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 21px;
    line-height: 1.38105;
    font-weight: 400;
    letter-spacing: 0.011em;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* Sections */
.section {
    padding: 100px 0;
    background: var(--black-bg);
}

.section:nth-child(even) {
    background: var(--dark-surface);
}

.section-alt {
    background: var(--black-bg);
}

.section-title {
    font-size: 40px;
    line-height: 1.1;
    font-weight: 700;
    letter-spacing: -0.009em;
    margin-bottom: 60px;
    color: var(--text-primary);
    text-align: center;
}

.about-text {
    font-size: 21px;
    line-height: 1.38105;
    font-weight: 400;
    letter-spacing: 0.011em;
    max-width: 692px;
    margin: 0 auto;
    text-align: center;
    color: var(--text-secondary);
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 692px;
    margin: 0 auto;
}

.timeline-item {
    position: relative;
    padding-left: 40px;
    margin-bottom: 48px;
}

.timeline-marker {
    position: absolute;
    left: 0;
    top: 4px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-blue);
    border: 2px solid var(--black-bg);
}

.timeline-content {
    background: rgba(255, 255, 255, 0.02);
    padding: 32px;
    border-radius: 24px;
    transition: all 0.3s ease;
}

.timeline-content:hover {
    background: rgba(255, 255, 255, 0.04);
    transform: translateY(-2px);
}


/* Timeline Show More Item */
.timeline-show-more {
    position: relative;
    padding-left: 40px;
    margin-bottom: 48px;
}

.show-more-content {
    background: transparent !important;
    padding: 0 !important;
}

.show-more-content:hover {
    background: transparent !important;
}

.show-more-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 14px 24px;
    background: rgba(255, 255, 255, 0.08);
    border: none;
    border-radius: 980px;
    color: var(--text-primary);
    font-size: 17px;
    line-height: 1.17648;
    font-weight: 400;
    letter-spacing: -0.022em;
    cursor: pointer;
    transition: all 0.2s ease;
}

.show-more-btn:hover {
    background: rgba(255, 255, 255, 0.12);
}

.show-more-icon {
    transition: transform 0.3s;
}

.show-more-text {
    font-family: inherit;
}

/* Hidden timeline items wrapper */
.timeline-hidden-items {
    transition: all 0.3s ease;
}

.timeline-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 12px;
}

.company-logo {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    padding: 8px;
}

.company-icon {
    width: 100%;
    height: 100%;
    color: var(--accent-blue);
}

.company-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.timeline-text {
    flex: 1;
    min-width: 0;
}

.timeline-title {
    font-size: 21px;
    line-height: 1.38105;
    font-weight: 600;
    letter-spacing: 0.011em;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.timeline-company {
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.timeline-date,
.timeline-period {
    font-size: 14px;
    line-height: 1.42859;
    font-weight: 400;
    letter-spacing: -0.016em;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.timeline-description {
    font-size: 15px;
    line-height: 1.5;
    font-weight: 400;
    letter-spacing: -0.022em;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.timeline-list {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin: 12px 0;
    padding-left: 20px;
}

.timeline-list li {
    margin-bottom: 6px;
}

.timeline-impact {
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-muted);
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.key-domains {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-top: 16px;
}

/* Certifications Grid */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: 980px;
    margin: 0 auto;
}

.cert-card {
    background: rgba(255, 255, 255, 0.02);
    padding: 32px;
    border-radius: 24px;
    transition: all 0.3s ease;
}

.cert-card:hover {
    background: rgba(255, 255, 255, 0.04);
    transform: translateY(-2px);
}

.cert-name {
    font-size: 21px;
    line-height: 1.38105;
    font-weight: 600;
    letter-spacing: 0.011em;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.cert-issuer {
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.cert-date {
    font-size: 14px;
    line-height: 1.42859;
    font-weight: 400;
    letter-spacing: -0.016em;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.cert-description {
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    color: var(--text-secondary);
}

/* Featured Certification */
.cert-card.featured,
.cert-card-featured {
    grid-column: 1 / -1;
    max-width: 692px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.04);
}

.cert-card.featured:hover,
.cert-card-featured:hover {
    background: rgba(255, 255, 255, 0.06);
    transform: translateY(-2px);
}

.cert-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--accent-blue);
    padding: 6px 12px;
    border-radius: 980px;
    font-size: 12px;
    line-height: 1.33337;
    font-weight: 400;
    letter-spacing: -0.01em;
    color: white;
}

.cert-badge-icon {
    font-size: 14px;
}

.cert-card-featured .cert-name {
    font-size: 24px;
    line-height: 1.16667;
    font-weight: 600;
    letter-spacing: 0.009em;
}

/* Kubestronaut Logo */
.kubestronaut-link {
    display: block;
    text-align: center;
    margin-bottom: 24px;
    transition: opacity 0.2s ease;
}

.kubestronaut-link:hover {
    opacity: 0.8;
}

.kubestronaut-logo {
    width: 100px;
    height: auto;
}

/* Credly Link */
.credly-link {
    display: inline-block;
    margin-top: 24px;
    padding: 12px 22px;
    background: var(--accent-blue);
    color: white;
    text-decoration: none;
    border-radius: 980px;
    font-size: 17px;
    line-height: 1.17648;
    font-weight: 400;
    letter-spacing: -0.022em;
    transition: all 0.2s ease;
    text-align: center;
}

.credly-link:hover {
    background: #0077ED;
}

/* Certification Section Titles */
.cert-section-title {
    font-size: 40px;
    line-height: 1.1;
    font-weight: 700;
    letter-spacing: 0em;
    color: var(--text-primary);
    margin: 80px 0 40px;
    text-align: center;
}

/* Certification Badge Grid */
.cert-badges-grid {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    gap: 16px;
    max-width: 100%;
    margin: 0 auto 32px;
    overflow-x: auto;
    padding: 12px 0;
}

/* CNCF Certifications - Highlighted */
.cncf-certs {
    padding: 32px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 24px;
}

.cncf-certs .cert-badge-item {
    background: rgba(255, 255, 255, 0.04);
}

.cncf-certs .cert-badge-item:hover {
    background: rgba(255, 255, 255, 0.06);
}

/* Cloud Native Certifications - Two rows layout */
.cloud-native-certs {
    padding: 32px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 24px;
    flex-wrap: wrap;
    justify-content: center;
}

.cloud-native-certs .cert-badge-item {
    background: rgba(255, 255, 255, 0.04);
    min-width: 140px;
    max-width: 160px;
    padding: 16px;
    flex-shrink: 0;
}

.cloud-native-certs .cert-badge-item:hover {
    background: rgba(255, 255, 255, 0.06);
}

.cloud-native-certs .cert-badge-img {
    width: 80px;
    height: 80px;
}

.cloud-native-certs .cert-badge-name {
    font-size: 0.8rem;
    min-height: 2.4rem;
}

.cloud-native-certs .cert-badge-acronym {
    font-size: 0.8rem;
}

/* Other Certifications - Two rows layout */
.other-certs {
    padding: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.cert-badge-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 20px;
    transition: all 0.3s ease;
    min-width: 160px;
    max-width: 180px;
    flex-shrink: 0;
}

.cert-badge-item:hover {
    background: rgba(255, 255, 255, 0.04);
    transform: translateY(-2px);
}

.cert-badge-img {
    width: 100px;
    height: 100px;
    object-fit: contain;
    margin-bottom: 0.75rem;
    display: block;
}

.cert-badge-text {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.cert-badge-name {
    font-size: 14px;
    line-height: 1.42859;
    font-weight: 400;
    letter-spacing: -0.016em;
    color: var(--text-primary);
    text-align: center;
    margin: 0 0 4px 0;
    min-height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cert-badge-acronym {
    font-size: 12px;
    line-height: 1.33337;
    font-weight: 400;
    letter-spacing: -0.01em;
    color: var(--text-secondary);
    text-align: center;
    margin: 0;
}

/* Skills - Modern Grid */
.skills-grid-modern {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.skill-card {
    background: var(--dark-surface);
    padding: 40px;
    border-radius: 24px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-blue), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.skill-card:hover {
    transform: translateY(-4px);
    background: rgba(28, 28, 30, 0.8);
}

.skill-card:hover::before {
    opacity: 1;
}

.skill-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: block;
}

.skill-card-title {
    font-size: 24px;
    line-height: 1.16667;
    font-weight: 600;
    letter-spacing: 0.009em;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.skill-card-description {
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.skill-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-item {
    background: rgba(10, 132, 255, 0.1);
    color: var(--accent-blue);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 13px;
    line-height: 1.38462;
    font-weight: 500;
    letter-spacing: -0.008em;
    border: 1px solid rgba(10, 132, 255, 0.2);
    transition: all 0.2s ease;
}

.skill-item:hover {
    background: rgba(10, 132, 255, 0.2);
    border-color: rgba(10, 132, 255, 0.4);
}

/* Languages Grid */
.languages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    max-width: 692px;
    margin: 0 auto;
}

.language-item {
    background: rgba(255, 255, 255, 0.02);
    padding: 32px;
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    text-align: center;
    transition: all 0.3s ease;
}

.language-item:hover {
    background: rgba(255, 255, 255, 0.04);
    transform: translateY(-2px);
}

.language-name {
    font-size: 21px;
    line-height: 1.38105;
    font-weight: 600;
    letter-spacing: 0.011em;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.language-level {
    font-size: 14px;
    line-height: 1.42859;
    font-weight: 400;
    letter-spacing: -0.016em;
    color: var(--text-secondary);
}

/* Contact Section */
.contact-text {
    font-size: 21px;
    line-height: 1.38105;
    font-weight: 400;
    letter-spacing: 0.011em;
    text-align: center;
    max-width: 692px;
    margin: 0 auto 32px;
    color: var(--text-secondary);
}

.contact-links {
    display: flex;
    justify-content: center;
}

.btn {
    padding: 12px 22px;
    border-radius: 980px;
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: 17px;
    line-height: 1.17648;
    font-weight: 400;
    letter-spacing: -0.022em;
    background: var(--accent-blue);
    color: white;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--accent-blue);
}

.btn-primary:hover {
    background: #0077ED;
}

/* Footer */
.footer {
    background: var(--black-bg);
    border-top: 1px solid var(--separator);
    color: var(--text-secondary);
    text-align: center;
    padding: 80px 0;
    font-size: 12px;
    line-height: 1.33337;
    font-weight: 400;
    letter-spacing: -0.01em;
}

.footer p {
    margin: 8px 0;
}

/* Shared Chat Message Styles */
.chat-message p {
    margin: 0;
    line-height: 1.5;
}

.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 0.75rem;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-blue);
    border-radius: 50%;
    animation: typing 1.4s infinite;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
    }
    30% {
        transform: translateY(-10px);
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--glass-border);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-blue);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        padding: 40px 0 60px;
    }

    .hero-wrapper {
        flex-direction: column;
        gap: 40px;
    }

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

    .hero-photo {
        width: 120px;
        height: 120px;
    }

    .hero-title {
        font-size: 32px;
        line-height: 1.125;
        letter-spacing: 0.004em;
        text-align: center;
    }

    .hero-subtitle {
        font-size: 19px;
        line-height: 1.42105;
        text-align: center;
    }

    .hero-company {
        font-size: 17px;
        line-height: 1.47059;
        margin-bottom: 20px;
        text-align: center;
    }

    .hero-social {
        justify-content: center;
    }

    .hero-chatbot {
        max-width: 100%;
    }

    .section-title {
        font-size: 32px;
        line-height: 1.1;
        letter-spacing: 0em;
        margin-bottom: 40px;
    }

    .section {
        padding: 60px 0;
    }

    .nav {
        padding: 0 1rem;
        height: 48px;
        position: relative;
    }

    .nav-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 48px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(0, 0, 0, 0.95);
        backdrop-filter: saturate(180%) blur(20px);
        -webkit-backdrop-filter: saturate(180%) blur(20px);
        padding: 0.75rem 1.5rem 1rem;
        gap: 0;
        border-bottom: 1px solid var(--separator);
    }

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

    .nav-links a {
        padding: 0.6rem 0;
        font-size: 0.95rem;
        border-bottom: 1px solid rgba(84, 84, 88, 0.3);
    }

    .nav-links a:last-child {
        border-bottom: none;
    }

    .chatbot-hero {
        margin: 2rem auto 1.5rem;
    }

    .chatbot-messages-main {
        max-height: 300px;
        padding: 1rem;
    }

    .chatbot-input-main {
        padding: 1rem;
        gap: 0.5rem;
    }

    #chat-input-main {
        padding: 0.75rem 1rem;
        font-size: 0.95rem;
    }

    .btn-send-main {
        min-width: 42px;
        height: 42px;
        padding: 0.75rem;
    }

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

    .cert-badges-grid {
        gap: 1rem;
        padding: 0.5rem;
    }

    .cert-badge-item {
        min-width: 120px;
        max-width: 140px;
        padding: 0.75rem;
    }

    .cert-badge-img {
        width: 80px;
        height: 80px;
    }

    .cert-badge-name {
        font-size: 0.75rem;
    }

    .cert-badge-acronym {
        font-size: 0.7rem;
    }

    .cert-section-title {
        font-size: 1.5rem;
        margin: 2rem 0 1.5rem;
    }

    .cncf-certs, .cloud-native-certs, .other-certs {
        padding: 1rem;
    }

    .cloud-native-certs .cert-badge-item {
        min-width: 110px;
        max-width: 130px;
        padding: 0.6rem;
    }

    .cloud-native-certs .cert-badge-img {
        width: 60px;
        height: 60px;
    }

    .cloud-native-certs .cert-badge-name {
        font-size: 0.7rem;
        min-height: 2rem;
    }

    .cloud-native-certs .cert-badge-acronym {
        font-size: 0.7rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section {
        padding: 3rem 1rem;
    }

    .hero-social {
        gap: 1.5rem;
    }
}