/* CSS Variables */
:root {
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --secondary-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --dark-color: #1f2937;
    --light-color: #f9fafb;
    --text-color: #374151;
    --text-light: #6b7280;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.1);
    --radius: 0.5rem;
    --radius-lg: 1rem;
    --transition: all 0.3s ease;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #ffffff;
    overflow-x: hidden;
}

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

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.nav {
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--dark-color);
}

.logo svg {
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 0 4rem;
    position: relative;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1.5rem;
    text-align: center;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.5rem 1.25rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    color: white;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(to right, #ffd700, #ffed4e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* VIN Form */
.vin-form {
    margin-bottom: 2rem;
}

.input-wrapper {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.vin-input {
    font-size: 1.125rem;
    padding: 1rem 1.5rem;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    background: white;
    color: var(--dark-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    width: 280px;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.vin-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.check-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: var(--secondary-color);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.3);
}

.check-btn:hover {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(16, 185, 129, 0.4);
}

.check-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.check-btn svg {
    width: 20px;
    height: 20px;
}

.vin-help {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

/* Demo VINs */
.demo-vins {
    display: flex;
    align-items: center;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.demo-vins p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

.demo-vin {
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 2rem;
    color: white;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.demo-vin:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
}

/* Hero Background Animation */
.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    z-index: 1;
}

.bg-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 20s infinite ease-in-out;
}

.bg-shape-1 {
    width: 400px;
    height: 400px;
    background: white;
    top: -200px;
    left: -200px;
    animation-delay: 0s;
}

.bg-shape-2 {
    width: 300px;
    height: 300px;
    background: white;
    bottom: -150px;
    right: -150px;
    animation-delay: -7s;
}

.bg-shape-3 {
    width: 200px;
    height: 200px;
    background: white;
    top: 50%;
    left: 50%;
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    33% {
        transform: translate(30px, -30px) rotate(120deg);
    }
    66% {
        transform: translate(-20px, 20px) rotate(240deg);
    }
}

/* Results Section */
.results-section {
    padding: 4rem 0;
    background: var(--light-color);
    min-height: 400px;
}

.results-content {
    animation: fadeInUp 0.6s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
}

.result-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.result-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.result-icon.success {
    background: #d1fae5;
    color: var(--secondary-color);
}

.result-icon.danger {
    background: #fee2e2;
    color: var(--danger-color);
}

.result-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
}

.vehicle-info {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.info-item {
    display: flex;
    flex-direction: column;
}

.info-label {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 0.25rem;
}

.info-value {
    font-weight: 600;
    color: var(--text-color);
}

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

.recall-item {
    background: var(--light-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.recall-component {
    font-weight: 600;
    color: var(--danger-color);
    margin-bottom: 0.5rem;
}

.recall-summary {
    color: var(--text-color);
    margin-bottom: 0.5rem;
    line-height: 1.7;
}

.recall-meta {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* Notification Section */
.notification-section {
    padding: 4rem 0;
    background: white;
}

.notification-card {
    max-width: 600px;
    margin: 0 auto;
    background: var(--light-color);
    border-radius: var(--radius-lg);
    padding: 3rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.notification-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    color: white;
}

.notification-icon.success {
    background: var(--secondary-color);
}

.notification-icon svg {
    width: 40px;
    height: 40px;
}

.notification-card h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.notification-card > p {
    font-size: 1.125rem;
    color: var(--text-color);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.notification-form {
    text-align: left;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.phone-input,
select.phone-input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
    background: white;
    color: var(--text-color);
}

.phone-input:focus,
select.phone-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

select.phone-input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23374151' d='M10.293 3.293L6 7.586 1.707 3.293A1 1 0 00.293 4.707l5 5a1 1 0 001.414 0l5-5a1 1 0 10-1.414-1.414z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-group small {
    display: block;
    margin-top: 0.5rem;
    color: var(--text-light);
    font-size: 0.875rem;
}

.checkbox-group {
    margin-bottom: 1.5rem;
}

.checkbox-label {
    display: flex;
    align-items: start;
    gap: 0.75rem;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    margin-top: 0.25rem;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-label span {
    font-size: 0.875rem;
    color: var(--text-color);
    line-height: 1.5;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr 0.5fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.submit-btn {
    width: 100%;
    padding: 1rem 2rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.submit-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(59, 130, 246, 0.3);
}

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.submit-btn svg {
    width: 20px;
    height: 20px;
}

.skip-btn {
    width: 100%;
    padding: 0.75rem 1.5rem;
    background: transparent;
    color: var(--text-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 1rem;
}

.skip-btn:hover {
    background: var(--light-color);
    color: var(--text-color);
    border-color: var(--text-light);
}

.privacy-note {
    margin-top: 2rem;
    font-size: 0.875rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.privacy-note svg {
    width: 16px;
    height: 16px;
}

/* Stats Section */
.stats-section {
    padding: 4rem 0;
    background: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.stat-card {
    text-align: center;
    padding: 2rem;
}

.stat-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--light-color);
    border-radius: 50%;
    color: var(--primary-color);
}

.stat-icon svg {
    width: 32px;
    height: 32px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-light);
    font-size: 1rem;
}

/* How It Works Section */
.how-section {
    padding: 4rem 0;
    background: var(--light-color);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.125rem;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.step-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.step-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
}

.step-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.step-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* FAQ Section */
.faq-section {
    padding: 4rem 0;
    background: white;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.faq-item {
    background: var(--light-color);
    border-radius: var(--radius);
    padding: 1.5rem;
}

.faq-item h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    color: var(--dark-color);
}

.faq-item p {
    color: var(--text-light);
    line-height: 1.7;
}

/* About Section */
.about-section {
    padding: 4rem 0;
    background: var(--light-color);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--dark-color);
}

.about-content p {
    font-size: 1.125rem;
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

/* Footer */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 2000;
}

.toast {
    background: white;
    border-radius: var(--radius);
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 1rem;
    min-width: 300px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.success {
    border-left: 4px solid var(--secondary-color);
}

.toast.error {
    border-left: 4px solid var(--danger-color);
}

.toast.warning {
    border-left: 4px solid var(--warning-color);
}

.toast-icon {
    width: 24px;
    height: 24px;
}

.toast.success .toast-icon {
    color: var(--secondary-color);
}

.toast.error .toast-icon {
    color: var(--danger-color);
}

.toast.warning .toast-icon {
    color: var(--warning-color);
}

.toast-message {
    flex: 1;
    color: var(--text-color);
}

/* Loading Spinner */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .input-wrapper {
        flex-direction: column;
        align-items: center;
    }
    
    .vin-input {
        width: 100%;
        max-width: 300px;
    }
    
    .demo-vins {
        flex-direction: column;
    }
    
    .vehicle-info {
        flex-direction: column;
        gap: 1rem;
    }
    
    .notification-card {
        padding: 2rem;
    }
    
    .stats-grid,
    .steps-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
}