/* ===================================================================
   Service Robotics — Consulting Website Stylesheet
   Professional blues/slate palette, clean modern design
   =================================================================== */

/* --- CSS Custom Properties --- */
:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-primary-50: #eff6ff;
    --color-secondary: #0f172a;
    --color-accent: #06b6d4;

    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-text-lighter: #94a3b8;

    --color-bg: #ffffff;
    --color-bg-light: #f8fafc;
    --color-bg-dark: #0f172a;
    --color-bg-dark-card: #1e293b;

    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;

    --color-success: #10b981;
    --color-error: #ef4444;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

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

    --transition: 200ms ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
    color: var(--color-primary-dark);
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.25;
    font-weight: 700;
    color: var(--color-secondary);
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); }
h3 { font-size: clamp(1.15rem, 2.5vw, 1.4rem); }
h4 { font-size: 1.1rem; }

ul { list-style: none; }

/* --- Utilities --- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section {
    padding: 80px 0;
}

.section.bg-light {
    background: var(--color-bg-light);
}

.section.bg-dark {
    background: var(--color-bg-dark);
    color: #cbd5e1;
}

.section.bg-dark h2,
.section.bg-dark h3,
.section.bg-dark h4 {
    color: #f1f5f9;
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 56px;
}

.section-header p {
    margin-top: 12px;
    color: var(--color-text-light);
    font-size: 1.1rem;
}

.section-header.light p {
    color: #94a3b8;
}

.section-divider {
    border: none;
    border-top: 1px solid var(--color-border);
    max-width: 800px;
    margin: 0 auto;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    line-height: 1.4;
}

.btn-primary {
    background: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: #ffffff;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
    background: var(--color-primary);
    color: #ffffff;
}

.btn-outline.btn-light {
    color: #e2e8f0;
    border-color: #475569;
}

.btn-outline.btn-light:hover {
    background: #475569;
    border-color: #475569;
    color: #ffffff;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.05rem;
}

.btn-block {
    width: 100%;
}

.btn-nav {
    padding: 10px 24px;
    font-size: 0.9rem;
}

/* --- Navbar --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: all 300ms ease;
}

.navbar.scrolled {
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--color-secondary);
    text-decoration: none;
}

.logo:hover {
    color: var(--color-secondary);
}

.logo-icon {
    color: var(--color-primary);
    font-size: 1.4rem;
}

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

.nav-links li a {
    padding: 8px 16px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-light);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

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

.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(--color-text);
    border-radius: 2px;
    transition: all 300ms ease;
}

.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);
}

/* --- Hero --- */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(170deg, #eff6ff 0%, #ffffff 50%, #f0f9ff 100%);
}

.hero-content {
    max-width: 780px;
}

.hero-content h1 {
    margin-bottom: 24px;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.2rem;
    line-height: 1.7;
    color: var(--color-text-light);
    margin-bottom: 36px;
    max-width: 600px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 56px;
}

.hero-proof {
    display: flex;
    align-items: center;
    gap: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}

.proof-item strong {
    display: block;
    font-size: 1rem;
    color: var(--color-secondary);
}

.proof-item span {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

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

/* --- Page Hero (inner pages) --- */
.page-hero {
    padding: 140px 0 60px;
    background: linear-gradient(170deg, #eff6ff 0%, #ffffff 100%);
    text-align: center;
}

.page-hero h1 {
    margin-bottom: 16px;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.page-hero p {
    font-size: 1.15rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* --- Problem Section --- */
.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.problem-card {
    padding: 32px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border-light);
}

.problem-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.problem-card h3 {
    margin-bottom: 12px;
}

.problem-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* --- Steps Section --- */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.step-card {
    text-align: center;
    padding: 32px 24px;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    background: var(--color-primary-50);
    color: var(--color-primary);
    font-size: 1.3rem;
    font-weight: 800;
    border-radius: 50%;
    margin-bottom: 20px;
}

.step-card h3 {
    margin-bottom: 12px;
}

.step-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* --- Services Preview (Home) --- */
.services-preview-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.service-preview-card {
    position: relative;
    padding: 40px 32px;
    background: var(--color-bg-dark-card);
    border-radius: var(--radius-lg);
    border: 1px solid #334155;
    text-align: center;
    transition: transform var(--transition), box-shadow var(--transition);
}

.service-preview-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.service-preview-card.featured {
    border-color: var(--color-primary);
    background: linear-gradient(180deg, #1e3a5f 0%, var(--color-bg-dark-card) 100%);
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 16px;
    background: var(--color-primary);
    color: #ffffff;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 20px;
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.service-preview-card h3 {
    color: #f1f5f9;
    margin-bottom: 12px;
}

.service-preview-card p {
    color: #94a3b8;
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.service-price {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 24px;
}

/* --- CTA Section --- */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, #1e40af 100%);
    color: #ffffff;
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    color: #ffffff;
    margin-bottom: 16px;
}

.cta-content p {
    color: #bfdbfe;
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.cta-content .btn-primary {
    background: #ffffff;
    color: var(--color-primary);
    border-color: #ffffff;
}

.cta-content .btn-primary:hover {
    background: #f0f9ff;
    border-color: #f0f9ff;
    color: var(--color-primary-dark);
}

/* --- Services Detail Page --- */
.service-detail {
    margin-bottom: 20px;
}

.service-detail-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 40px;
}

.service-icon-lg {
    font-size: 3rem;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-50);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.price-tag {
    display: inline-block;
    margin-top: 8px;
    padding: 4px 14px;
    background: var(--color-primary-50);
    color: var(--color-primary);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 20px;
}

.service-detail-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 48px;
}

.service-description p {
    color: var(--color-text-light);
    font-size: 1.05rem;
    margin-bottom: 24px;
}

.service-description h3 {
    margin-bottom: 16px;
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    padding: 10px 0 10px 28px;
    position: relative;
    color: var(--color-text-light);
    border-bottom: 1px solid var(--color-border-light);
}

.feature-list li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 700;
}

.feature-list li:last-child {
    border-bottom: none;
}

.sidebar-card {
    padding: 32px;
    background: var(--color-bg-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    position: sticky;
    top: 96px;
}

.sidebar-card h4 {
    margin-bottom: 8px;
    margin-top: 24px;
}

.sidebar-card h4:first-child {
    margin-top: 0;
}

.sidebar-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

.sidebar-card ul {
    list-style: disc;
    padding-left: 20px;
    margin: 8px 0 24px;
}

.sidebar-card ul li {
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.sidebar-card .btn {
    margin-top: 8px;
}

/* --- Comparison Table --- */
.comparison-table-wrap {
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.comparison-table th,
.comparison-table td {
    padding: 16px 24px;
    text-align: left;
    border-bottom: 1px solid var(--color-border-light);
}

.comparison-table thead th {
    background: var(--color-bg-light);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.comparison-table thead th.highlight {
    background: var(--color-primary);
    color: #ffffff;
}

.comparison-table td.highlight {
    background: var(--color-primary-50);
    color: var(--color-primary);
    font-weight: 600;
}

.comparison-table tbody tr:last-child td {
    border-bottom: none;
}

/* --- About Page --- */
.about-story {
    max-width: 760px;
    margin: 0 auto;
}

.story-content h2 {
    margin-bottom: 24px;
}

.story-content p {
    color: var(--color-text-light);
    font-size: 1.05rem;
    margin-bottom: 20px;
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.mission-card {
    padding: 32px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border-light);
}

.mission-card h3 {
    margin-bottom: 16px;
    color: var(--color-primary);
}

.mission-card p {
    color: var(--color-text-light);
    font-size: 1rem;
}

.values-list {
    list-style: none;
    padding: 0;
}

.values-list li {
    padding: 8px 0;
    color: var(--color-text-light);
    font-size: 0.95rem;
}

.values-list li strong {
    color: var(--color-text);
}

/* --- Team --- */
.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.team-card {
    text-align: center;
    padding: 40px 32px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border-light);
}

.team-avatar {
    margin-bottom: 20px;
}

.avatar-placeholder {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 88px;
    height: 88px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: #ffffff;
    font-size: 1.3rem;
    font-weight: 800;
    border-radius: 50%;
    letter-spacing: 0.02em;
}

.team-role {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.team-card p:last-child {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

.team-note {
    max-width: 640px;
    margin: 40px auto 0;
    text-align: center;
    padding: 24px 32px;
    background: var(--color-primary-50);
    border-radius: var(--radius-md);
    border: 1px solid #bfdbfe;
}

.team-note p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

.team-note strong {
    color: var(--color-text);
}

/* --- Why AI --- */
.why-ai-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.why-card {
    padding: 32px;
    background: var(--color-bg-dark-card);
    border-radius: var(--radius-md);
    border: 1px solid #334155;
}

.why-card h3 {
    margin-bottom: 12px;
}

.why-card p {
    font-size: 0.95rem;
}

/* --- Contact Page --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 48px;
}

.contact-form-wrap h2 {
    margin-bottom: 8px;
}

.contact-form-wrap > p {
    color: var(--color-text-light);
    margin-bottom: 32px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    font-size: 0.95rem;
    font-family: var(--font-family);
    color: var(--color-text);
    background: var(--color-bg);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.form-group.has-error .form-input {
    border-color: var(--color-error);
}

.field-errors {
    margin-top: 6px;
}

.error-message {
    display: block;
    color: var(--color-error);
    font-size: 0.85rem;
}

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

.info-card {
    padding: 28px;
    background: var(--color-bg-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.info-card h3 {
    margin-bottom: 16px;
    font-size: 1.1rem;
}

.info-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

.expect-list {
    list-style: decimal;
    padding-left: 20px;
}

.expect-list li {
    color: var(--color-text-light);
    font-size: 0.95rem;
    padding: 4px 0;
}

.faq-mini details {
    border-bottom: 1px solid var(--color-border-light);
    padding: 12px 0;
}

.faq-mini details:last-child {
    border-bottom: none;
}

.faq-mini summary {
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-text);
}

.faq-mini details p {
    margin-top: 8px;
    font-size: 0.9rem;
}

/* --- Contact Success --- */
.success-content {
    text-align: center;
    max-width: 560px;
    margin: 0 auto;
    padding: 40px 0;
}

.success-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: #d1fae5;
    color: var(--color-success);
    font-size: 2.5rem;
    font-weight: 700;
    border-radius: 50%;
    margin-bottom: 24px;
}

.success-content p {
    color: var(--color-text-light);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.success-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* --- Footer --- */
.footer {
    background: var(--color-bg-dark);
    color: #94a3b8;
    padding: 64px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 40px;
    border-bottom: 1px solid #1e293b;
}

.footer-brand .logo {
    color: #f1f5f9;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
    max-width: 300px;
}

.footer-links h4 {
    color: #f1f5f9;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.footer-links ul li {
    margin-bottom: 8px;
}

.footer-links ul li a {
    color: #94a3b8;
    font-size: 0.9rem;
    transition: color var(--transition);
}

.footer-links ul li a:hover {
    color: #e2e8f0;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    font-size: 0.85rem;
    color: #64748b;
}

.footer-login-link {
    color: #475569;
    font-size: 0.8rem;
    text-decoration: none;
    transition: color var(--transition);
}

.footer-login-link:hover {
    color: #94a3b8;
}

/* --- Sitemap Page --- */
.sitemap-layout {
    max-width: 860px;
    margin: 0 auto;
}

.sitemap-group {
    margin-bottom: 48px;
}

.sitemap-group h2 {
    margin-bottom: 4px;
    font-size: 1.4rem;
}

.sitemap-group-desc {
    color: var(--color-text-light);
    font-size: 0.95rem;
    margin-bottom: 24px;
}

.sitemap-entry {
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border-light);
}

.sitemap-entry:last-child {
    border-bottom: none;
}

.sitemap-link,
.sitemap-link-static {
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-right: 12px;
}

.sitemap-link-static {
    color: var(--color-text-lighter);
}

.sitemap-label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-text);
}

.sitemap-desc {
    margin-top: 6px;
    color: var(--color-text-light);
    font-size: 0.9rem;
    line-height: 1.65;
}

/* ===================================================================
   Responsive
   =================================================================== */

@media (max-width: 1024px) {
    .service-detail-grid {
        grid-template-columns: 1fr;
    }

    .sidebar-card {
        position: static;
    }

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

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

@media (max-width: 768px) {
    .booking-steps {
        gap: 4px;
    }

    .step-label {
        display: none;
    }

    .calendar-grid {
        grid-template-columns: repeat(7, 1fr);
        gap: 4px;
    }

    .calendar-day {
        padding: 10px 4px;
    }

    .cal-day-name {
        font-size: 0.65rem;
    }

    .cal-day-num {
        font-size: 0.95rem;
    }

    .slots-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .summary-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-bg);
        flex-direction: column;
        padding: 16px 24px 24px;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-lg);
    }

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

    .nav-links li a {
        padding: 12px 0;
        display: block;
    }

    .btn-nav {
        text-align: center;
        margin-top: 8px;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .hero-proof {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .proof-divider {
        display: none;
    }

    .problem-grid,
    .services-preview-grid,
    .mission-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }

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

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

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

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        text-align: center;
    }

    .page-hero {
        padding: 110px 0 40px;
    }

    .section {
        padding: 56px 0;
    }
}

@media (max-width: 480px) {
    .steps-grid {
        grid-template-columns: 1fr;
    }

    .container {
        padding: 0 16px;
    }
}

/* ===================================================================
   Insights / Blog
   =================================================================== */

.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 2rem;
}

.insight-card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    overflow: hidden;
    transition: box-shadow 0.2s, transform 0.2s;
}

.insight-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.insight-card-body {
    padding: 1.5rem;
}

.insight-date {
    display: block;
    font-size: 0.85rem;
    color: #64748b;
    margin-bottom: 0.5rem;
}

.insight-card h2 {
    font-size: 1.25rem;
    margin: 0 0 0.75rem;
    line-height: 1.3;
}

.insight-card h2 a {
    color: #1e293b;
    text-decoration: none;
}

.insight-card h2 a:hover {
    color: #2563eb;
}

.insight-card p {
    color: #475569;
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0 0 1rem;
}

.insight-meta {
    font-size: 0.85rem;
    color: #64748b;
}

.insight-hero-meta {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    color: #64748b;
    font-size: 0.95rem;
    margin-top: 0.75rem;
}

.back-link {
    display: inline-block;
    color: #2563eb;
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.back-link:hover {
    text-decoration: underline;
}

.article-content {
    max-width: 720px;
    margin: 0 auto;
    font-size: 1.05rem;
    line-height: 1.8;
    color: #334155;
}

.article-content p {
    margin-bottom: 1.5rem;
}

.article-footer {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #e2e8f0;
}

/* ===================================================================
   Case Studies
   =================================================================== */

.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 2rem;
}

.case-study-card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    overflow: hidden;
    transition: box-shadow 0.2s, transform 0.2s;
}

.case-study-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.case-study-card-body {
    padding: 1.5rem;
}

.case-study-client {
    display: inline-block;
    background: #eff6ff;
    color: #2563eb;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.case-study-client-hero {
    display: inline-block;
    background: rgba(255,255,255,0.15);
    color: #fff;
    padding: 0.25rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.case-study-card h2 {
    font-size: 1.25rem;
    margin: 0 0 0.75rem;
    line-height: 1.3;
}

.case-study-card h2 a {
    color: #1e293b;
    text-decoration: none;
}

.case-study-card h2 a:hover {
    color: #2563eb;
}

.case-study-card p {
    color: #475569;
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0 0 1rem;
}

.btn-sm {
    padding: 0.4rem 1rem;
    font-size: 0.85rem;
}

.case-study-content {
    max-width: 720px;
    margin: 0 auto;
}

.case-study-section {
    margin-bottom: 2.5rem;
}

.case-study-section h2 {
    font-size: 1.5rem;
    color: #1e293b;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e2e8f0;
}

.case-study-results {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 12px;
    padding: 1.5rem;
}

.case-study-results h2 {
    color: #166534;
    border-bottom-color: #86efac;
}

/* ===================================================================
   Booking Page
   =================================================================== */

.booking-layout {
    max-width: 720px;
    margin: 0 auto;
}

/* Step Indicators */
.booking-steps {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 48px;
}

.booking-step {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 24px;
    font-size: 0.9rem;
    color: var(--color-text-lighter);
    background: var(--color-bg-light);
    border: 1px solid var(--color-border-light);
    transition: all var(--transition);
}

.booking-step.active {
    color: var(--color-primary);
    background: var(--color-primary-50);
    border-color: var(--color-primary);
    font-weight: 600;
}

.booking-step.completed {
    color: var(--color-success);
    background: #d1fae5;
    border-color: #86efac;
}

.step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    font-size: 0.8rem;
    font-weight: 700;
    background: var(--color-border);
    color: var(--color-text-light);
}

.booking-step.active .step-num {
    background: var(--color-primary);
    color: #fff;
}

.booking-step.completed .step-num {
    background: var(--color-success);
    color: #fff;
}

/* Panels */
.booking-panel {
    animation: fadeIn 300ms ease;
}

.hidden {
    display: none !important;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.booking-panel h2 {
    margin-bottom: 8px;
}

.booking-panel-desc {
    color: var(--color-text-light);
    margin-bottom: 28px;
}

.step-back-row {
    margin-bottom: 16px;
}

.step-back-btn {
    background: none;
    border: none;
    color: var(--color-primary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    padding: 4px 0;
    font-family: var(--font-family);
}

.step-back-btn:hover {
    color: var(--color-primary-dark);
}

/* Calendar Grid */
.calendar-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.calendar-nav-btn {
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 8px 16px;
    cursor: pointer;
    font-size: 1rem;
    color: var(--color-text);
    font-family: var(--font-family);
    transition: all var(--transition);
}

.calendar-nav-btn:hover {
    background: var(--color-bg-light);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.calendar-month {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-secondary);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
}

.calendar-day {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 14px 8px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font-family);
}

.calendar-day:hover:not(.disabled) {
    border-color: var(--color-primary);
    background: var(--color-primary-50);
}

.calendar-day.selected {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: #fff;
}

.calendar-day.selected .cal-day-name {
    color: #bfdbfe;
}

.calendar-day.disabled {
    opacity: 0.35;
    cursor: default;
}

.cal-day-name {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-text-lighter);
}

.cal-day-num {
    font-size: 1.1rem;
    font-weight: 700;
}

/* Time Slots */
.slots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 10px;
}

.slot-btn {
    padding: 14px 12px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
    font-family: var(--font-family);
    transition: all var(--transition);
    text-align: center;
}

.slot-btn:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-50);
    color: var(--color-primary);
}

.slot-btn.selected {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: #fff;
}

.slots-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 40px;
    color: var(--color-text-light);
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.slots-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--color-text-light);
}

.slots-empty p {
    margin-bottom: 16px;
}

/* Booking Form extras */
.required {
    color: var(--color-error);
}

.form-errors {
    margin-bottom: 20px;
    padding: 12px 16px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: var(--radius-sm);
}

/* Booking Success */
.booking-summary-card {
    text-align: left;
    max-width: 440px;
    margin: 28px auto 32px;
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 20px;
    border-bottom: 1px solid var(--color-border-light);
}

.summary-row:last-child {
    border-bottom: none;
}

.summary-label {
    font-size: 0.85rem;
    color: var(--color-text-lighter);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 600;
}

.summary-value {
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.95rem;
}

.summary-ref {
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.8rem;
    color: var(--color-text-lighter);
}

/* ===================================================================
   Empty State
   =================================================================== */

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
}

.empty-state h2 {
    font-size: 1.75rem;
    color: #1e293b;
    margin-bottom: 0.75rem;
}

.empty-state p {
    color: #64748b;
    font-size: 1.1rem;
    margin-bottom: 2rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}