/* 
VisaGo - 签证服务网站
设计风格：新瑞士主义 (Neo-Swiss)
*/

/* ===== CSS Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Neo-Swiss Color System */
    --color-primary: #0A2540;
    --color-primary-light: #1a3a5f;
    --color-accent: #00E5A0;
    --color-accent-dark: #00c589;
    --color-white: #ffffff;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-900: #111827;
    --color-destructive: #ef4444;

    /* Typography */
    --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Border */
    --border-width: 2px;
    --border-radius: 4px;
}

body {
    font-family: var(--font-body);
    color: var(--color-primary);
    background-color: var(--color-white);
    line-height: 1.6;
    font-size: 16px;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.1;
}

h1 {
    font-size: 4rem;
}

h2 {
    font-size: 3rem;
}

h3 {
    font-size: 1.5rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.15s ease;
}

button {
    font-family: var(--font-body);
    cursor: pointer;
    border: none;
    transition: all 0.15s ease;
}

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

/* ===== Utility Classes ===== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

@media (min-width: 640px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

.swiss-shadow {
    box-shadow: 2px 2px 0 0 var(--color-primary);
}

.swiss-shadow-accent {
    box-shadow: 2px 2px 0 0 var(--color-accent);
}

.grid-bg {
    background-image: linear-gradient(to right, rgba(10, 37, 64, 0.1) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(10, 37, 64, 0.1) 1px, transparent 1px);
    background-size: 8px 8px;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-gray-200);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
}

.navbar-logo-icon {
    width: 100px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    transition: transform 0.15s ease;
}


.navbar-menu {
    display: none;
    align-items: center;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .navbar-menu {
        display: flex;
    }
}

.navbar-link {
    font-size: 0.875rem;
    font-weight: 500;
}

.navbar-link:hover {
    color: var(--color-accent);
}

.btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-primary);
    box-shadow: 2px 2px 0 0 var(--color-accent);
}


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

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

.btn-lg {
    padding: 0.75rem 2rem;
    font-size: 1.125rem;
}

.mobile-menu-toggle {
    display: block;
    background: none;
    padding: 0.5rem;
}

@media (min-width: 769px) {
    .mobile-menu-toggle {
        display: none;
    }
}

/* ===== Hero Section ===== */
.hero {
    padding-top: 8rem;
    padding-bottom: 5rem;
    position: relative;
    overflow: unset !important;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}
.hero-bg1 {
    position: absolute;
    inset: 0;
    opacity: 0.3;
    z-index: 0;
}

.hero .container {
    position: relative;
    z-index: 10;
}

.hero-grid {
    display: grid;
    gap: var(--spacing-xl);
    align-items: center;
}

@media (min-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: rgba(0, 229, 160, 0.1);
    border: var(--border-width) solid var(--color-accent);
    margin-bottom: var(--spacing-md);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
}

.hero-title {
    font-size: 4rem;
    line-height: 1;
    margin-bottom: var(--spacing-md);
}

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

.hero-description {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    max-width: 40rem;
    line-height: 1;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
}

/* ===== Visa Checker Card ===== */
.visa-checker {
    border: var(--border-width) solid var(--color-gray-200);
    padding: var(--spacing-md);
    background-color: var(--color-white);
    box-shadow: 2px 2px 0 0 var(--color-primary);
}

.visa-checker-grid {
    display: grid;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

@media (min-width: 768px) {
    .visa-checker-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.form-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.form-select,
.form-input {
    width: 100%;
    padding: 0.75rem;
    border: var(--border-width) solid var(--color-gray-200);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: var(--font-body);
}

.form-select:focus,
.form-input:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* ===== Trust Indicators ===== */
.trust-indicators {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.stars {
    display: flex;
    gap: 0.25rem;
}

.star {
    color: var(--color-accent);
    font-size: 1.25rem;
}

.divider {
    width: 1px;
    height: 24px;
    background-color: var(--color-gray-200);
}

/* ===== Hero Image ===== */
.hero-image-wrapper {
    position: relative;
}

.hero-image-bg {
    position: absolute;
    top: -2rem;
    right: -2rem;
    width: 16rem;
    height: 16rem;
    background-color: rgba(0, 229, 160, 0.1);
    border: var(--border-width) solid var(--color-accent);
    z-index: 0;
}

.hero-image {
    position: relative;
    z-index: 10;
    width: 100%;
    box-shadow: 2px 2px 0 0 var(--color-primary);
}

/* ===== Stats Section ===== */
.stats-section {
    padding: var(--spacing-2xl) 0;
    background-color: var(--color-primary);
    color: var(--color-white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    text-align: center;
}

@media (min-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0.8;
}

/* ===== Section Styles ===== */
.section {
    padding: 5rem 0;
}

.section-gray {
    background-color: rgba(243, 244, 246, 0.5);
}

.section-accent {
    background-color: var(--color-accent);
    color: var(--color-primary);
}

.section-title {
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    color: var(--color-gray-600);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-3xl);
}

/* ===== Comparison Cards ===== */
.comparison-grid {
    display: grid;
    gap: var(--spacing-lg);
    max-width: 80rem;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .comparison-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.comparison-card {
    border: var(--border-width) solid var(--color-gray-200);
    padding: var(--spacing-lg);
    background-color: var(--color-white);
}

.comparison-card-accent {
    border-color: var(--color-accent);
    background-color: rgba(0, 229, 160, 0.05);
}

.comparison-title {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.comparison-list {
    list-style: none;
}

.comparison-item {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
    align-items: flex-start;
}

.comparison-icon {
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.comparison-icon-check {
    color: var(--color-accent);
}

.comparison-icon-x {
    color: var(--color-destructive);
}

/* ===== Process Section ===== */
.process-grid {
    display: grid;
    gap: var(--spacing-xl);
    max-width: 80rem;
    margin: 0 auto;
}

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

    .process-illustration {
        max-width: 28rem;
    }
}

.process-step {
    text-align: center;
}

.process-number {
    width: 5rem;
    height: 5rem;
    margin: 0 auto var(--spacing-md);
    background-color: rgba(0, 229, 160, 0.1);
    border: var(--border-width) solid var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--color-accent);
}

.process-title {
    margin-bottom: 1rem;
}

.process-description {
    color: var(--color-gray-600);
    line-height: 1.7;
}

.process-illustration {
    margin: var(--spacing-2xl) auto 0;
}

/* ===== Features Section ===== */
.features-grid {
    display: grid;
    gap: var(--spacing-3xl);
    align-items: center;
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr 1fr;
    }
}

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

.feature-item {
    display: flex;
    gap: 1rem;
}

.feature-icon {
    flex-shrink: 0;
    width: 3rem;
    height: 3rem;
    background-color: rgba(0, 229, 160, 0.1);
    border: var(--border-width) solid var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
}

.feature-title {
    margin-bottom: 0.5rem;
}

.feature-description {
    color: var(--color-gray-600);
}

/* ===== Testimonials ===== */
.testimonials-grid {
    display: grid;
    gap: var(--spacing-lg);
}

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

.testimonial-card {
    border: var(--border-width) solid var(--color-gray-200);
    padding: var(--spacing-md);
    background-color: var(--color-white);
}

.testimonial-stars {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 1rem;
}

.testimonial-text {
    font-size: 0.875rem;
    line-height: 1.7;
    margin-bottom: 1rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.testimonial-avatar {
    width: 2.5rem;
    height: 2.5rem;
    background-color: rgba(0, 229, 160, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
}

.testimonial-name {
    font-weight: 700;
    font-size: 0.875rem;
}

.testimonial-visa {
    font-size: 0.75rem;
    color: var(--color-gray-600);
}

/* ===== CTA Section ===== */
.cta-section {
    text-align: center;
}

.cta-title {
    margin-bottom: var(--spacing-md);
}

.cta-description {
    font-size: 1.125rem;
    opacity: 0.9;
    max-width: 42rem;
    margin: 0 auto var(--spacing-lg);
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
}

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

.btn-cta-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    box-shadow: 2px 2px 0 0 var(--color-primary);
}

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

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

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

/* ===== Newsletter Section ===== */
.newsletter-section {
    padding: var(--spacing-2xl) 0;
    border-top: 1px solid var(--color-gray-200);
}

.newsletter-content {
    max-width: 42rem;
    margin: 0 auto;
    text-align: center;
}

.newsletter-title {
    margin-bottom: 1rem;
}

.newsletter-description {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
}

.newsletter-form {
    display: flex;
    gap: 0.5rem;
}

.newsletter-input {
    flex: 1;
}

/* ===== Footer ===== */
.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-2xl) 0;
}

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

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

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.footer-brand-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-brand-description {
    font-size: 0.875rem;
    line-height: 1.7;
    opacity: 0.8;
}

.footer-social {
    display: flex;
    gap: 1rem;
    margin-top: var(--spacing-md);
}

.footer-social-link {
    transition: color 0.15s ease;
}

.footer-social-link:hover {
    color: var(--color-accent);
}

.footer-column-title {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-links {
    list-style: none;
}

.footer-link-item {
    margin-bottom: 0.75rem;
}

.footer-link {
    font-size: 0.875rem;
    transition: color 0.15s ease;
}

.footer-link:hover {
    color: var(--color-accent);
}

.footer-bottom {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

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

.footer-copyright {
    font-size: 0.875rem;
    opacity: 0.6;
}

.footer-languages {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.875rem;
}

.footer-language-link:hover {
    color: var(--color-accent);
}

/* ===== Icons (Simple SVG replacements) ===== */
.icon {
    width: 1.5rem;
    height: 1.5rem;
    display: inline-block;
}

.icon-sm {
    width: 1rem;
    height: 1rem;
}

.icon-lg {
    width: 2rem;
    height: 2rem;
}

.layui-form-selected dl {
    display: block;
    width: 100%;
}