/* ========================================
   Template 01: Stripe-Style Minimalism
   ======================================== */

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

:root {
    --primary: #2563eb;
    --primary-dark: #2563eb;
    --text-primary: #1f2937;
    --text-secondary: #1f2937;
    --text-muted: #1f2937;
    --bg-primary: #ffffff;
    --bg-secondary: #ffffff;
    --border: #1f2937;
    --success: #10B981;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 96px;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 2px 4px rgba(10, 37, 64, 0.03);
    --shadow-md: 0 4px 12px rgba(10, 37, 64, 0.08);
    --shadow-lg: 0 12px 24px rgba(10, 37, 64, 0.12);
    --transition: all 0.2s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}

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

.header__logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.header__nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header__nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition);
}

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

.header__burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.header__burger span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

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

.btn--primary:hover {
    background: #5851E8;
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn--secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

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

.btn--large {
    padding: 16px 32px;
    font-size: 16px;
}

.btn--full {
    width: 100%;
}

/* Hero */
.hero {
    padding: 160px 0 var(--spacing-xl);
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

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

.hero__title {
    font-size: 64px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.hero__subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.hero__actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

.hero__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    max-width: 600px;
    margin: 0 auto;
}

.stat {
    text-align: center;
}

.stat__value {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.stat__label {
    font-size: 14px;
    color: var(--text-muted);
}

/* Section */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
}

.section-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
}

/* Features */
.features {
    padding: var(--spacing-xl) 0;
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.feature-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.feature-card__icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

.feature-card__title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.feature-card__text {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Process */
.process {
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
}

.process__steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.process-step {
    text-align: center;
    padding: var(--spacing-lg);
}

.process-step__number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.process-step__title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.process-step__text {
    color: var(--text-secondary);
}

/* Social Proof */
.social-proof {
    padding: var(--spacing-xl) 0;
    background: var(--bg-primary);
}

.social-proof__title {
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

.social-proof__logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.logo-item {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-muted);
    opacity: 0.6;
    transition: var(--transition);
}

.logo-item:hover {
    opacity: 1;
}

/* Testimonials */
.testimonials {
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
}

.testimonials__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.testimonial-card {
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.testimonial-card__quote {
    font-size: 18px;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.testimonial-card__name {
    font-weight: 600;
    color: var(--text-primary);
}

.testimonial-card__role {
    font-size: 14px;
    color: var(--text-muted);
}

/* Pricing */
.pricing {
    padding: var(--spacing-xl) 0;
}

.pricing__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    position: relative;
}

.pricing-card--featured {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.pricing-card__badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: 4px 16px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
}

.pricing-card__name {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.pricing-card__price {
    margin-bottom: var(--spacing-lg);
}

.price__amount {
    font-size: 48px;
    font-weight: 700;
    display: block;
}

.price__period {
    font-size: 14px;
    color: var(--text-muted);
}

.pricing-card__features {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.pricing-card__features li {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}

.pricing-card__features li:last-child {
    border-bottom: none;
}

/* FAQ */
.faq {
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
}

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

.faq-item {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
}

.faq-item__question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: none;
    border: none;
    font-size: 18px;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    color: var(--text-primary);
}

.faq-item__icon {
    font-size: 24px;
    color: var(--primary);
    transition: var(--transition);
}

.faq-item.active .faq-item__icon {
    transform: rotate(45deg);
}

.faq-item__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-item__answer {
    max-height: 500px;
    padding: 0 var(--spacing-md) var(--spacing-md);
}

.faq-item__answer p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Contact */
.contact {
    padding: var(--spacing-xl) 0;
}

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

.contact__title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.contact__text {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.contact__form {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 91, 255, 0.1);
}

.form-note {
    margin-top: var(--spacing-sm);
    font-size: 13px;
    color: var(--text-muted);
}

/* Footer */
.footer {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.footer__content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.footer__tagline {
    color: var(--text-muted);
    font-size: 14px;
}

.footer__column h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer__column a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 8px;
    font-size: 14px;
    transition: var(--transition);
}

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

.footer__bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .header__nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        align-items: stretch;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .header__nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .header__burger {
        display: flex;
    }
    
    .hero__title {
        font-size: 40px;
    }
    
    .hero__actions {
        flex-direction: column;
    }
    
    .hero__stats {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer__content {
        grid-template-columns: 1fr;
    }
    
    .pricing__grid {
        grid-template-columns: 1fr;
    }
}