/* ===================================
   Tera System Integration - Styles
   Mobile-First Responsive Design
   =================================== */

/* CSS Variables */
:root {
    /* Colors */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #0f172a;
    --accent: #06b6d4;

    /* Neutrals */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    /* Typography */
    --font-family: 'Noto Sans Thai', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --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 -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--gray-700);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--gray-900);
    font-weight: 600;
    line-height: 1.3;
}

.section-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.section-subtitle {
    color: var(--gray-500);
    font-size: var(--font-size-base);
    max-width: 600px;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--white);
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-secondary:hover {
    background: var(--gray-50);
    color: var(--gray-900);
    border-color: var(--gray-400);
}

.btn-full {
    width: 100%;
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    border-bottom-color: var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--gray-900);
    font-weight: 600;
    font-size: var(--font-size-lg);
}

.logo:hover {
    color: var(--gray-900);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    font-weight: 700;
    border-radius: var(--radius-md);
}

.logo-text {
    display: none;
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    transition: all var(--transition-fast);
}

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

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

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

.nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: var(--white);
    padding: 100px var(--spacing-xl) var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    transition: right var(--transition-base);
    box-shadow: var(--shadow-xl);
}

.nav-menu.active {
    right: 0;
}

.nav-link {
    color: var(--gray-700);
    font-size: var(--font-size-lg);
    padding: var(--spacing-sm) 0;
    transition: color var(--transition-fast);
}

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

.nav-cta {
    background: var(--primary);
    color: var(--white) !important;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    text-align: center;
    margin-top: var(--spacing-md);
}

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

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    overflow: hidden;
}

.hero .container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.hero-content {
    text-align: center;
}

.hero-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.hero-title .highlight {
    color: var(--primary);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

.hero-visual {
    display: flex;
    justify-content: center;
}

.hero-graphic {
    perspective: 1000px;
}

.code-block {
    background: var(--gray-900);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    max-width: 320px;
    transform: rotateX(5deg) rotateY(-5deg);
    transition: transform var(--transition-base);
}

.code-block:hover {
    transform: rotateX(0) rotateY(0);
}

.code-header {
    display: flex;
    gap: 6px;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--gray-800);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
}

.dot.red { background: #ef4444; }
.dot.yellow { background: #eab308; }
.dot.green { background: #22c55e; }

.code-content {
    padding: var(--spacing-lg);
}

.code-content code {
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: var(--font-size-sm);
    color: var(--gray-300);
    line-height: 1.8;
}

.code-keyword { color: #c084fc; }
.code-string { color: #4ade80; }

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    line-height: 0;
}

.hero-wave svg {
    width: 100%;
    height: 60px;
}

/* Fade-in Animation */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================
   Services Section
   =================================== */
.services {
    padding: var(--spacing-3xl) 0;
    background: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.service-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.service-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.service-icon svg {
    width: 28px;
    height: 28px;
    color: var(--white);
}

.service-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.service-desc {
    color: var(--gray-600);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
}

.service-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.service-features li {
    background: var(--gray-100);
    color: var(--gray-700);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
}

/* ===================================
   Process Section
   =================================== */
.process {
    padding: var(--spacing-3xl) 0;
    background: var(--gray-50);
}

.process-timeline {
    position: relative;
    max-width: 700px;
    margin: 0 auto;
}

.process-timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gray-200);
}

.process-step {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.process-step:last-child {
    margin-bottom: 0;
}

.step-number {
    flex-shrink: 0;
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: var(--white);
    font-weight: 700;
    font-size: var(--font-size-lg);
    border-radius: var(--radius-full);
    z-index: 1;
}

.step-content {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    flex: 1;
}

.step-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
}

.step-desc {
    color: var(--gray-600);
    font-size: var(--font-size-sm);
}

/* ===================================
   About Section
   =================================== */
.about {
    padding: var(--spacing-3xl) 0;
    background: var(--white);
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.about-text .section-title {
    text-align: left;
}

.about-desc {
    color: var(--gray-600);
    margin-bottom: var(--spacing-lg);
}

.about-desc strong {
    color: var(--gray-900);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.stat {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
}

.stat-number {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: var(--font-size-xs);
    color: var(--gray-500);
}

.about-values {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.value-card {
    background: var(--gray-50);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
}

.value-icon {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-sm);
}

.value-card h4 {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-xs);
}

.value-card p {
    color: var(--gray-600);
    font-size: var(--font-size-sm);
}

/* ===================================
   FAQ Section
   =================================== */
.faq {
    padding: var(--spacing-3xl) 0;
    background: var(--gray-50);
}

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

.faq-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    text-align: left;
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--gray-800);
    transition: background var(--transition-fast);
}

.faq-question:hover {
    background: var(--gray-50);
}

.faq-question span {
    flex: 1;
    padding-right: var(--spacing-md);
}

.faq-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: var(--gray-400);
    transition: transform var(--transition-base);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(180deg);
}

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

.faq-answer.open {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    line-height: 1.8;
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    padding: var(--spacing-3xl) 0;
    background: var(--white);
}

.contact-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.contact-info .section-title {
    text-align: left;
}

.contact-desc {
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.contact-method:hover {
    background: var(--gray-100);
    color: inherit;
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    color: var(--white);
}

.contact-detail {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: var(--font-size-xs);
    color: var(--gray-500);
}

.contact-value {
    color: var(--gray-800);
    font-weight: 500;
}

.contact-form-wrapper {
    background: var(--gray-50);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: var(--spacing-sm);
}

.required {
    color: #ef4444;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background: var(--white);
    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(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.footer-brand .logo-icon {
    background: var(--white);
    color: var(--primary);
}

.footer-desc {
    color: var(--gray-400);
    font-size: var(--font-size-sm);
}

.footer-links h4,
.footer-contact h4 {
    color: var(--white);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-md);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: var(--gray-400);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

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

.footer-contact a {
    color: var(--gray-400);
    font-size: var(--font-size-sm);
}

.footer-contact a:hover {
    color: var(--white);
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--gray-800);
    text-align: center;
}

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

/* ===================================
   Responsive - Tablet (768px+)
   =================================== */
@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-xl);
    }

    .section-title {
        font-size: var(--font-size-3xl);
    }

    .logo-text {
        display: inline;
    }

    .nav-toggle {
        display: none;
    }

    .nav-menu {
        position: static;
        width: auto;
        max-width: none;
        height: auto;
        background: transparent;
        padding: 0;
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-lg);
        box-shadow: none;
    }

    .nav-link {
        font-size: var(--font-size-sm);
        padding: var(--spacing-xs) 0;
    }

    .nav-cta {
        margin-top: 0;
        padding: var(--spacing-xs) var(--spacing-md);
    }

    .hero {
        padding: 140px 0 100px;
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

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

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

    .about-stats {
        gap: var(--spacing-xl);
    }

    .stat-number {
        font-size: var(--font-size-3xl);
    }

    .stat-label {
        font-size: var(--font-size-sm);
    }

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

    .contact-content {
        flex-direction: row;
    }

    .contact-info,
    .contact-form-wrapper {
        flex: 1;
    }

    .footer-content {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

/* ===================================
   Responsive - Desktop (1024px+)
   =================================== */
@media (min-width: 1024px) {
    .hero .container {
        flex-direction: row;
        align-items: center;
    }

    .hero-content {
        text-align: left;
        flex: 1;
    }

    .hero-title {
        font-size: var(--font-size-5xl);
    }

    .hero-subtitle {
        margin-left: 0;
        margin-right: 0;
    }

    .hero-cta {
        justify-content: flex-start;
    }

    .hero-visual {
        flex: 1;
        justify-content: flex-end;
    }

    .code-block {
        max-width: 400px;
    }

    .services {
        padding: var(--spacing-4xl) 0;
    }

    .services-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .process {
        padding: var(--spacing-4xl) 0;
    }

    .about {
        padding: var(--spacing-4xl) 0;
    }

    .about-content {
        flex-direction: row;
        align-items: flex-start;
    }

    .about-text {
        flex: 1;
    }

    .about-values {
        flex: 1;
        grid-template-columns: 1fr;
    }

    .faq {
        padding: var(--spacing-4xl) 0;
    }

    .contact {
        padding: var(--spacing-4xl) 0;
    }
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.service-card,
.process-step,
.value-card {
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }

.process-step:nth-child(1) { animation-delay: 0.1s; }
.process-step:nth-child(2) { animation-delay: 0.2s; }
.process-step:nth-child(3) { animation-delay: 0.3s; }
.process-step:nth-child(4) { animation-delay: 0.4s; }
.process-step:nth-child(5) { animation-delay: 0.5s; }

/* ===================================
   Utility Classes
   =================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Overlay for mobile menu */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 999;
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ===================================
   Honeypot & Captcha Styles
   =================================== */

/* Honeypot - hidden from users */
.honeypot-field {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    overflow: hidden;
    pointer-events: none;
}

/* Captcha */
.captcha-group {
    margin-bottom: var(--spacing-lg);
}

.captcha-label {
    color: var(--gray-700);
}

.captcha-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.captcha-question {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    font-weight: 600;
    color: var(--gray-800);
    min-width: 100px;
    justify-content: center;
}

.captcha-num {
    font-size: var(--font-size-lg);
    color: var(--primary);
    min-width: 20px;
    text-align: center;
}

.captcha-operator,
.captcha-equals {
    color: var(--gray-500);
}

.captcha-wrapper input[type="number"] {
    width: 80px;
    text-align: center;
    -moz-appearance: textfield;
}

.captcha-wrapper input[type="number"]::-webkit-outer-spin-button,
.captcha-wrapper input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.captcha-refresh {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.captcha-refresh:hover {
    background: var(--gray-200);
    border-color: var(--gray-400);
}

.captcha-refresh:active {
    transform: rotate(180deg);
}

.captcha-refresh svg {
    width: 18px;
    height: 18px;
    color: var(--gray-600);
}

/* Captcha error state */
.captcha-wrapper.error .captcha-question,
.captcha-wrapper.error input[type="number"] {
    border-color: #ef4444;
}

/* Animation delay for 5th service card */
.service-card:nth-child(5) { animation-delay: 0.5s; }