/* ============================================
   Technical Due Diligence - Styles
   Mobile-first, responsive, dark mode support
   ============================================ */

/* CSS Custom Properties */
:root {
    /* Colors - Light Mode */
    --color-bg: #ffffff;
    --color-bg-alt: #f8f9fa;
    --color-bg-card: #ffffff;
    --color-text: #1a1a2e;
    --color-text-muted: #4a5568;
    --color-text-light: #718096;
    --color-primary: #1a365d;
    --color-primary-hover: #2c5282;
    --color-accent: #2b6cb0;
    --color-border: #e2e8f0;
    --color-border-light: #edf2f7;
    --color-success: #276749;
    --color-success-bg: #c6f6d5;
    --color-warning: #c05621;
    --color-warning-bg: #feebc8;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Layout */
    --max-width: 1200px;
    --header-height: 72px;

    /* Effects */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #0d1117;
        --color-bg-alt: #161b22;
        --color-bg-card: #1c2128;
        --color-text: #e6edf3;
        --color-text-muted: #8b949e;
        --color-text-light: #6e7681;
        --color-primary: #58a6ff;
        --color-primary-hover: #79b8ff;
        --color-accent: #58a6ff;
        --color-border: #30363d;
        --color-border-light: #21262d;
        --color-success: #3fb950;
        --color-success-bg: #1c4428;
        --color-warning: #d29922;
        --color-warning-bg: #3d2c10;
        --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
        --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    }
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Accessibility */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: white;
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    z-index: 1000;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-4);
}

.hidden {
    display: none !important;
}

/* Focus styles for accessibility */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-8);
    }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text);
}

h1 {
    font-size: var(--font-size-3xl);
}

h2 {
    font-size: var(--font-size-2xl);
}

h3 {
    font-size: var(--font-size-xl);
}

@media (min-width: 768px) {
    h1 {
        font-size: var(--font-size-4xl);
    }

    h2 {
        font-size: var(--font-size-3xl);
    }

    h3 {
        font-size: var(--font-size-2xl);
    }
}

@media (min-width: 1024px) {
    h1 {
        font-size: var(--font-size-5xl);
    }
}

p {
    margin-bottom: var(--space-4);
}

p:last-child {
    margin-bottom: 0;
}

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

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

ul, ol {
    list-style: none;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-3) var(--space-6);
    font-family: inherit;
    font-size: var(--font-size-base);
    font-weight: 600;
    line-height: 1.5;
    text-decoration: none;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

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

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

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

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: white;
}

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

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

.btn-small {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
}

.btn-full {
    width: 100%;
}

@media (prefers-color-scheme: dark) {
    .btn-primary {
        background-color: var(--color-primary);
        border-color: var(--color-primary);
    }

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

    .btn-secondary {
        color: var(--color-primary);
        border-color: var(--color-primary);
    }

    .btn-secondary:hover {
        background-color: var(--color-primary);
        color: var(--color-bg);
    }
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
    transition: box-shadow var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.025em;
}

.social-links {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-left: var(--space-6);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.social-links a:hover {
    color: var(--color-primary);
}

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

.nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.hamburger {
    position: relative;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: background-color var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: transform var(--transition-base);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

.nav-toggle[aria-expanded="true"] .hamburger {
    background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
    transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
    transform: translateY(-8px) rotate(-45deg);
}

.nav-menu {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4);
    flex-direction: column;
    gap: var(--space-2);
}

.nav-menu.active {
    display: flex;
}

.nav-menu a {
    display: block;
    padding: var(--space-3) var(--space-4);
    color: var(--color-text);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

.nav-menu a:hover {
    background-color: var(--color-bg-alt);
    color: var(--color-text);
}

.nav-menu .nav-cta {
    background-color: var(--color-primary);
    color: white;
    text-align: center;
    margin-top: var(--space-2);
}

.nav-menu .nav-cta:hover {
    background-color: var(--color-primary-hover);
    color: white;
}

@media (min-width: 1024px) {
    .nav-toggle {
        display: none;
    }

    .nav-menu {
        display: flex;
        position: static;
        flex-direction: row;
        align-items: center;
        background: none;
        border: none;
        padding: 0;
        gap: var(--space-1);
    }

    .nav-menu a {
        padding: var(--space-2) var(--space-4);
        font-size: var(--font-size-sm);
    }

    .nav-menu .nav-cta {
        margin-top: 0;
        margin-left: var(--space-2);
    }
}

/* Hero Section */
.hero {
    padding: calc(var(--header-height) + var(--space-12)) 0 var(--space-12);
    background-color: var(--color-bg);
}

.hero-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-10);
}

.hero-content {
    max-width: 800px;
}

.hero-image {
    display: flex;
    flex-direction: column;
    align-items: center;
    order: -1;
}

.profile-image {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center 20%;
    border: 4px solid var(--color-border);
    box-shadow: var(--shadow-lg);
}

.hero-tagline {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-align: center;
    margin: var(--space-4) 0 0 0;
    line-height: 1.6;
}

.hero h1 {
    margin-bottom: var(--space-6);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--space-8);
    max-width: 600px;
}

.hero-ctas {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

@media (min-width: 640px) {
    .hero-ctas {
        flex-direction: row;
    }
}

@media (min-width: 768px) {
    .hero {
        padding: calc(var(--header-height) + var(--space-20)) 0 var(--space-20);
    }

    .hero-subtitle {
        font-size: var(--font-size-xl);
    }

    .profile-image {
        width: 200px;
        height: 200px;
    }
}

@media (min-width: 1024px) {
    .hero-grid {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        gap: var(--space-16);
    }

    .hero-image {
        order: 0;
        flex-shrink: 0;
    }

    .profile-image {
        width: 240px;
        height: 240px;
    }
}

/* Trust Indicators */
.trust-indicators {
    padding: var(--space-8) 0;
    background-color: var(--color-bg-alt);
    border-top: 1px solid var(--color-border-light);
    border-bottom: 1px solid var(--color-border-light);
}

.trust-list {
    display: grid;
    gap: var(--space-6);
}

.trust-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
}

.trust-icon {
    font-size: var(--font-size-2xl);
    line-height: 1;
}

.trust-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.trust-content strong {
    font-size: var(--font-size-base);
    color: var(--color-text);
}

.trust-content span {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

@media (min-width: 768px) {
    .trust-list {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-8);
    }

    .trust-item {
        justify-content: center;
        text-align: center;
        flex-direction: column;
        align-items: center;
    }
}

/* Section Styles */
section {
    padding: var(--space-16) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-header h2 {
    margin-bottom: var(--space-4);
}

.section-header p {
    color: var(--color-text-muted);
    font-size: var(--font-size-lg);
    max-width: 600px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    section {
        padding: var(--space-24) 0;
    }
}

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

.services-grid {
    display: grid;
    gap: var(--space-8);
}

.service-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    transition: box-shadow var(--transition-base);
}

.service-card:hover {
    box-shadow: var(--shadow-lg);
}

.service-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-4);
}

.service-card h3 {
    margin-bottom: var(--space-3);
}

.service-card > p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
}

.service-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.service-list li {
    position: relative;
    padding-left: var(--space-6);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.service-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 700;
}

@media (min-width: 768px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Deliverables Section */
.deliverables {
    background-color: var(--color-bg-alt);
}

.deliverables-grid {
    display: grid;
    gap: var(--space-6);
}

.deliverable-item {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
}

.deliverable-item h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-3);
}

.deliverable-item p {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

@media (min-width: 768px) {
    .deliverables-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Process Section */
.process {
    background-color: var(--color-bg);
}

.process-steps {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.process-step {
    display: flex;
    gap: var(--space-6);
    position: relative;
}

.process-step:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 23px;
    top: 56px;
    width: 2px;
    height: calc(100% - 24px);
    background-color: var(--color-border);
}

.step-number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background-color: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.step-content h3 {
    margin-bottom: var(--space-2);
}

.step-content p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-3);
}

.step-time {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-muted);
}

/* Red Flags Section */
.red-flags {
    background-color: var(--color-bg-alt);
}

.red-flags-grid {
    display: grid;
    gap: var(--space-6);
}

.red-flag-item {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-warning);
    border-radius: var(--radius-md);
    padding: var(--space-6);
}

.red-flag-icon {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-3);
    display: block;
}

.red-flag-item h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-3);
}

.red-flag-item p {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

@media (min-width: 768px) {
    .red-flags-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Proof Section */
.proof {
    background-color: var(--color-bg);
}

.proof-grid {
    display: grid;
    gap: var(--space-6);
}

.proof-item {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    text-align: center;
}

.proof-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-4);
}

.proof-item h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-3);
}

.proof-item p {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-4);
}

.proof-placeholder {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    font-style: italic;
}

@media (min-width: 768px) {
    .proof-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Case Studies Section */
.case-studies {
    background-color: var(--color-bg-alt);
}

.case-studies-grid {
    display: grid;
    gap: var(--space-6);
}

.case-study-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    transition: box-shadow var(--transition-base);
}

.case-study-card:hover {
    box-shadow: var(--shadow-lg);
}

.case-study-tag {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

.case-study-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-4);
}

.case-study-card > p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-4);
}

.case-study-outcome {
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border-light);
    font-size: var(--font-size-sm);
    color: var(--color-success);
}

@media (prefers-color-scheme: dark) {
    .case-study-tag {
        background-color: var(--color-border);
    }
}

@media (min-width: 768px) {
    .case-studies-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .case-studies-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Pricing Section */
.pricing {
    background-color: var(--color-bg);
}

.pricing-grid {
    display: grid;
    gap: var(--space-6);
    max-width: 1100px;
    margin: 0 auto;
}

.pricing-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    display: flex;
    flex-direction: column;
    position: relative;
}

.pricing-featured {
    border-color: var(--color-primary);
    border-width: 2px;
}

.pricing-badge {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: var(--color-primary);
    color: white;
    padding: var(--space-1) var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.pricing-card h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-3);
}

.pricing-description {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-6);
}

.pricing-price {
    margin-bottom: var(--space-6);
}

.price-amount {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-text);
}

.price-note {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.pricing-features {
    flex-grow: 1;
    margin-bottom: var(--space-8);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.pricing-features li {
    position: relative;
    padding-left: var(--space-6);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.pricing-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 700;
}

@media (min-width: 768px) {
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Lead Magnet Section */
.lead-magnet {
    background-color: var(--color-primary);
    color: white;
}

@media (prefers-color-scheme: dark) {
    .lead-magnet {
        background-color: var(--color-bg-alt);
        border-top: 1px solid var(--color-border);
        border-bottom: 1px solid var(--color-border);
    }
}

.lead-magnet-content {
    display: grid;
    gap: var(--space-10);
}

.lead-magnet-text h2 {
    color: white;
    margin-bottom: var(--space-4);
}

.lead-magnet-text > p {
    opacity: 0.9;
    margin-bottom: var(--space-6);
}

.lead-magnet-benefits {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.lead-magnet-benefits li {
    position: relative;
    padding-left: var(--space-6);
    opacity: 0.9;
}

.lead-magnet-benefits li::before {
    content: '→';
    position: absolute;
    left: 0;
}

@media (prefers-color-scheme: dark) {
    .lead-magnet-text h2 {
        color: var(--color-text);
    }

    .lead-magnet-text > p,
    .lead-magnet-benefits li {
        opacity: 1;
        color: var(--color-text-muted);
    }
}

.lead-magnet-form {
    background-color: white;
    border-radius: var(--radius-lg);
    padding: var(--space-8);
}

@media (prefers-color-scheme: dark) {
    .lead-magnet-form {
        background-color: var(--color-bg-card);
        border: 1px solid var(--color-border);
    }
}

@media (min-width: 768px) {
    .lead-magnet-content {
        grid-template-columns: 1fr 400px;
        align-items: center;
    }
}

/* FAQ Section */
.faq {
    background-color: var(--color-bg-alt);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

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

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-6) 0;
    background: none;
    border: none;
    font-family: inherit;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
    text-align: left;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--color-primary);
}

.faq-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    position: relative;
    margin-left: var(--space-4);
}

.faq-icon::before,
.faq-icon::after {
    content: '';
    position: absolute;
    background-color: currentColor;
    transition: transform var(--transition-base);
}

.faq-icon::before {
    top: 50%;
    left: 0;
    width: 100%;
    height: 2px;
    transform: translateY(-50%);
}

.faq-icon::after {
    top: 0;
    left: 50%;
    width: 2px;
    height: 100%;
    transform: translateX(-50%);
}

.faq-question[aria-expanded="true"] .faq-icon::after {
    transform: translateX(-50%) rotate(90deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), padding var(--transition-slow);
}

.faq-answer.active {
    max-height: 500px;
    padding-bottom: var(--space-6);
}

.faq-answer p {
    color: var(--color-text-muted);
}

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

.contact-grid {
    display: grid;
    gap: var(--space-10);
}

.contact-info h3 {
    margin-bottom: var(--space-4);
}

.contact-info > p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
}

.calendar-link {
    margin-bottom: var(--space-8);
}

.contact-details {
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border);
}

.contact-details h3 {
    margin-bottom: var(--space-4);
}

.contact-details p {
    margin-bottom: var(--space-2);
}

.response-time {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.contact-form-wrapper {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
}

@media (min-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-16);
    }
}

/* Forms */
.form {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.form-row {
    display: grid;
    gap: var(--space-5);
}

@media (min-width: 640px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--space-3) var(--space-4);
    font-family: inherit;
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.1);
}

@media (prefers-color-scheme: dark) {
    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
        box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.2);
    }
}

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

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

.form-group select {
    cursor: pointer;
}

.form-note {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
    text-align: center;
    margin-top: var(--space-2);
}

.form-success {
    text-align: center;
    padding: var(--space-8);
}

.success-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background-color: var(--color-success-bg);
    color: var(--color-success);
    border-radius: 50%;
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-4);
}

.form-success p {
    color: var(--color-text);
}

/* Footer */
.footer {
    background-color: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    padding: var(--space-12) 0 var(--space-8);
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.footer-name {
    font-weight: 700;
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-1);
}

.footer-info p:last-child {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.footer-links {
    display: flex;
    gap: var(--space-6);
}

.footer-links a {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

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

.footer-bottom {
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

@media (min-width: 768px) {
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-start;
    }
}

/* Utility Classes */
@media (max-width: 767px) {
    .hide-mobile {
        display: none;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}