/* ============================================================
   3D TSI Main Landing Page — Page-Specific Styles
   Only styles unique to index.html that aren't in shared CSS.
   ============================================================ */

/* ── Service Cards ── */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-dim);
    padding: 0;
    text-align: center;
    transition: all var(--transition-slow);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.service-card-img {
    width: 100%;
    height: 200px;
    overflow: hidden;
    position: relative;
}

.service-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease, filter 0.6s ease;
    filter: grayscale(100%) brightness(0.9);
}

.service-card:hover .service-card-img img {
    transform: scale(1.08);
    filter: grayscale(0%) brightness(1);
}

.service-card .service-number,
.service-card h3,
.service-card p,
.service-card .service-tags {
    padding-left: 2.5rem;
    padding-right: 2.5rem;
}

a.service-card {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.service-link {
    display: block;
    padding: 1.5rem 2.5rem 2rem;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--gold-primary);
    transition: all var(--transition-base);
    margin-top: auto;
}

.service-card:hover .service-link {
    letter-spacing: 3px;
    color: var(--gold-hover);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 1px;
    background: var(--gold-primary);
    transition: width var(--transition-slow);
}

.service-card:hover::before {
    width: 100%;
}

.service-card:hover {
    border-color: var(--border-accent);
    background: rgba(13, 148, 136, 0.03);
}

.service-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 300;
    color: var(--gold-primary);
    margin-bottom: 1rem;
    margin-top: 2rem;
    line-height: 1;
}

.service-card h3 {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 300;
    margin-bottom: 1rem;
    letter-spacing: 1px;
}

.service-card p {
    font-family: var(--font-body);
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 300;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.service-card .service-tags {
    padding-bottom: 2.5rem;
}

.service-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
}

.service-tag {
    font-family: var(--font-body);
    padding: 0.4rem 0.8rem;
    border: 1px solid var(--border-dim);
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: all var(--transition-base);
    position: relative;
    cursor: help;
}

.service-tag:hover::after {
    content: attr(data-definition);
    position: absolute;
    bottom: 110%;
    left: 50%;
    transform: translateX(-50%);
    width: 260px;
    padding: 1rem;
    background: rgba(248, 250, 251, 0.98);
    color: var(--text-primary);
    border: 1px solid var(--border-accent);
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 300;
    line-height: 1.5;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    pointer-events: none;
    opacity: 0;
    animation: fadeIn 0.3s forwards;
    white-space: normal;
}

.service-tag:hover::before {
    content: '';
    position: absolute;
    bottom: 110%;
    left: 50%;
    transform: translateX(-50%) translateY(100%);
    border-width: 6px;
    border-style: solid;
    border-color: var(--border-accent) transparent transparent transparent;
    z-index: 1000;
    opacity: 0;
    animation: fadeIn 0.3s forwards;
}

.service-card:hover .service-tag {
    border-color: var(--border-accent);
}

/* ── Approach Section ── */
.approach-section {
    background: linear-gradient(180deg, transparent 0%, rgba(13, 148, 136, 0.03) 50%, transparent 100%);
    padding: var(--space-3xl) 0;
}

.approach-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.approach-intro {
    font-family: var(--font-body);
    font-size: 1.05rem;
    font-weight: 300;
    line-height: 2;
    color: var(--text-muted);
    text-align: center;
    max-width: 860px;
    margin: 0 auto var(--space-2xl);
}

.approach-intro strong {
    color: var(--gold-primary);
    font-weight: 500;
}

.approach-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border: 1px solid var(--border-dim);
}

.approach-card {
    padding: 4rem 3rem;
    text-align: center;
    border-right: 1px solid var(--border-dim);
    transition: all var(--transition-slow);
}

.approach-card:last-child {
    border-right: none;
}

.approach-card:hover {
    background: rgba(13, 148, 136, 0.03);
}

.approach-step {
    font-family: var(--font-heading);
    font-size: 4.5rem;
    font-weight: 300;
    color: var(--gold-primary);
    line-height: 1;
    margin-bottom: 1.5rem;
}

.approach-card:hover .approach-step {
    color: var(--gold-hover);
}

.approach-card h3 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 300;
    font-style: italic;
    color: var(--gold-primary);
    margin-bottom: 1.5rem;
    letter-spacing: 2px;
}

.approach-card p {
    font-family: var(--font-body);
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 300;
    line-height: 1.9;
}

/* ── Partners Section ── */
.partners-section {
    padding: var(--space-2xl) 0;
    overflow: hidden;
}

/* ── Projects Grid ── */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.project-card {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    cursor: pointer;
}

.project-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.6s ease;
    filter: grayscale(100%) brightness(0.9);
}

.project-card:hover img {
    transform: scale(1.08);
    filter: grayscale(0%) brightness(1);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.3) 50%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 2rem;
}

.project-type {
    font-family: var(--font-body);
    font-size: 0.65rem;
    color: var(--gold-primary);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    font-weight: 300;
}

.project-card h4 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 0.25rem;
    color: #fff;
}

.project-location {
    font-family: var(--font-body);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.8rem;
    font-weight: 300;
}

/* ── About Us Section ── */
.about-section {
    padding: 8rem var(--container-padding);
    max-width: 1200px;
    margin: 0 auto;
}

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

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.about-story h3,
.about-team h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.about-story p,
.about-team p {
    font-family: var(--font-body);
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 300;
    line-height: 1.9;
    margin-bottom: 1.5rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 2.5rem;
    padding-top: 2.5rem;
    border-top: 1px solid var(--border-dim);
}

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

.about-stat-value {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 300;
    color: var(--gold-primary);
    line-height: 1;
}

.about-stat-label {
    font-family: var(--font-body);
    color: var(--text-muted);
    font-size: 0.65rem;
    margin-top: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 300;
}

.team-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 2rem;
}

.team-member {
    padding: 1.25rem 1.5rem;
    border: 1px solid var(--border-dim);
    transition: all var(--transition-base);
}

.team-member:hover {
    border-color: var(--gold-primary);
}

.team-member-name {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.team-member-role {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--gold-primary);
    letter-spacing: 1px;
    text-transform: uppercase;
    font-weight: 300;
}

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

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

/* ── Contact Section ── */
.contact-section {
    background: var(--bg-secondary);
    padding: var(--space-3xl) 0;
    position: relative;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-line);
}

.contact-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
}

.contact-info h3 {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.contact-info>p {
    font-family: var(--font-body);
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 3rem;
    font-weight: 300;
    line-height: 1.8;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-dim);
    transition: all var(--transition-base);
}

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

.contact-item-icon {
    font-size: 1.25rem;
    width: 50px;
    display: flex;
    justify-content: center;
}

.contact-item-text span {
    display: block;
    font-family: var(--font-body);
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 0.25rem;
    font-weight: 300;
}

.contact-item-text strong {
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 300;
}

.contact-form-wrapper {
    background: var(--bg-elevated);
    border: 1px solid var(--border-dim);
    padding: 3rem;
}

.form-header {
    margin-bottom: 2.5rem;
    text-align: center;
}

.form-header h4 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 300;
    margin-bottom: 0.5rem;
}

.form-header p {
    font-family: var(--font-body);
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 300;
}

/* ── Testimonials ── */
.testimonials-section {
    padding: 6rem 2rem;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 2rem;
}

.testimonial-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-accent);
    border-radius: 16px;
    padding: 2rem;
    position: relative;
}

.testimonial-card .quote-mark {
    color: var(--gold-primary);
    font-size: 3rem;
    position: absolute;
    top: 1rem;
    left: 1.5rem;
    opacity: 0.3;
}

.testimonial-card p {
    color: var(--text-primary);
    margin: 1rem 0 1.5rem;
    line-height: 1.7;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    background: var(--gradient-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: #FFFFFF;
}

.testimonial-name {
    color: var(--text-primary);
    font-weight: 600;
}

.testimonial-title {
    color: var(--gold-primary);
    font-size: 0.875rem;
}

/* ── AI Chat Widget ── */
.ai-assistant {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: var(--z-chat);
}

.ai-toggle {
    width: 60px;
    height: 60px;
    background: var(--gold-primary);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.ai-toggle:hover {
    background: var(--gold-hover);
}

.ai-toggle svg {
    width: 24px;
    height: 24px;
    fill: #FFFFFF;
}

/* ── AI Chat Toggle ── */

.ai-toggle .close-icon {
    display: none;
}

.ai-assistant.open .ai-toggle .chat-icon {
    display: none;
}

.ai-assistant.open .ai-toggle .close-icon {
    display: block;
}

.ai-chat-window {
    position: absolute;
    bottom: 75px;
    right: 0;
    width: 400px;
    height: 520px;
    background: var(--bg-primary);
    border: 1px solid var(--border-accent);
    display: none;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.12);
}

.ai-assistant.open .ai-chat-window {
    display: flex;
    animation: fadeInUp 0.3s ease;
}

.ai-chat-header {
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-dim);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.ai-avatar {
    width: 45px;
    height: 45px;
    background: var(--gold-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.ai-header-text h4 {
    font-family: var(--font-heading);
    font-weight: 300;
    font-size: 1.1rem;
}

.ai-header-text span {
    font-family: var(--font-body);
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    font-weight: 300;
}

.ai-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
}

.ai-status-dot {
    width: 8px;
    height: 8px;
    background: #4ade80;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.ai-status span {
    font-family: var(--font-body);
    font-size: 0.65rem;
    color: #4ade80;
    letter-spacing: 1px;
    font-weight: 300;
}

.ai-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.ai-message {
    max-width: 85%;
    padding: 1rem 1.25rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 300;
    line-height: 1.7;
}

.ai-message.bot {
    background: var(--bg-secondary);
    border: 1px solid var(--border-dim);
    align-self: flex-start;
}

.ai-message.user {
    background: var(--gold-primary);
    color: #FFFFFF;
    align-self: flex-end;
    font-weight: 300;
}

.ai-message.typing {
    display: flex;
    gap: 6px;
    padding: 1rem 1.5rem;
}

.ai-message.typing span {
    width: 6px;
    height: 6px;
    background: var(--gold-primary);
    border-radius: 50%;
    animation: typingBounce 1.4s ease-in-out infinite;
}

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

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

@keyframes typingBounce {

    0%,
    60%,
    100% {
        transform: translateY(0);
        opacity: 0.4;
    }

    30% {
        transform: translateY(-6px);
        opacity: 1;
    }
}

.ai-quick-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0 1.5rem 1rem;
}

.ai-quick-btn {
    font-family: var(--font-body);
    padding: 0.5rem 1rem;
    background: transparent;
    border: 1px solid var(--border-accent);
    color: var(--gold-primary);
    font-size: 0.7rem;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all var(--transition-base);
    text-transform: uppercase;
    font-weight: 300;
}

.ai-quick-btn:hover {
    background: var(--gold-primary);
    color: #FFFFFF;
}

.ai-chat-input {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-dim);
    display: flex;
    gap: 0.75rem;
    background: var(--bg-secondary);
}

.ai-chat-input input {
    flex: 1;
    padding: 0.875rem 1rem;
    background: rgba(26, 26, 46, 0.02);
    border: 1px solid var(--border-dim);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 300;
}

.ai-chat-input input:focus {
    outline: none;
    border-color: var(--gold-primary);
}

.ai-chat-input button {
    width: 48px;
    height: 48px;
    background: var(--gold-primary);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.ai-chat-input button:hover {
    background: var(--gold-hover);
}

.ai-chat-input button svg {
    width: 18px;
    height: 18px;
    fill: #FFFFFF;
}

/* ── Certifications & Licensing ── */
.credentials-section {
    padding: var(--space-3xl) 0;
    max-width: var(--max-width);
    margin: 0 auto;
}

.credentials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    padding: 0 var(--container-padding);
    margin-top: 3rem;
}

.credential-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-dim);
    padding: 2.5rem 2rem;
    transition: all 0.4s ease;
    position: relative;
    text-align: center;
}

.credential-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--gold-primary), var(--gold-light));
    transition: width 0.4s ease;
}

.credential-card:hover::before {
    width: 100%;
}

.credential-card:hover {
    border-color: var(--border-accent);
    background: rgba(13, 148, 136, 0.02);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(13, 148, 136, 0.08);
}

.credential-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border: 2px solid var(--gold-primary);
    color: var(--gold-primary);
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 300;
    letter-spacing: 2px;
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.credential-card:hover .credential-badge {
    background: var(--gold-primary);
    color: #FFFFFF;
}

.credential-card h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 300;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.credential-number {
    font-family: var(--font-body);
    color: var(--gold-primary);
    font-size: 0.75rem;
    font-weight: 300;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 1.25rem;
}

.credential-card p {
    font-family: var(--font-body);
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 300;
    line-height: 1.8;
}

/* ── Page-Specific Responsive ── */
@media (max-width: 1200px) {

    .services-grid,
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .approach-card {
        border-right: none;
        border-bottom: 1px solid var(--border-dim);
    }

    .approach-card:last-child {
        border-bottom: none;
    }
}

@media (max-width: 1024px) {
    .exceptional-metrics {
        flex-wrap: wrap;
        gap: 3rem;
    }

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

@media (max-width: 768px) {

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

    .exceptional-metrics {
        flex-direction: column;
        gap: 2rem;
    }

    .ai-chat-window {
        width: calc(100vw - 2rem);
        right: -1rem;
        height: 60vh;
    }
}