/* ===========================
   Prepio.io — Stripe-inspired Design System
   =========================== */

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===========================
   Design Tokens
   =========================== */
:root {
    --color-primary: #533afd;
    --color-primary-hover: #4434d4;
    --color-navy: #061b31;
    --color-body: #64748d;
    --color-label: #273951;
    --color-bg: #ffffff;
    --color-border: #e5edf5;
    --color-dark: #1c1e54;
    --color-success: #15be53;

    --shadow-standard: rgba(50,50,93,0.25) 0px 30px 45px -30px, rgba(0,0,0,0.1) 0px 18px 36px -18px;
    --shadow-ambient: rgba(23,23,23,0.08) 0px 15px 35px 0px;
    --shadow-sm: rgba(50,50,93,0.1) 0px 6px 12px -2px, rgba(0,0,0,0.06) 0px 3px 7px -3px;

    --font-sans: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'Source Code Pro', 'Courier New', monospace;

    --max-width: 1080px;
    --radius: 6px;
    --radius-lg: 8px;
}

body {
    font-family: var(--font-sans);
    font-weight: 400;
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-body);
    background: var(--color-bg);
    overflow-x: hidden;
}

/* ===========================
   Layout
   =========================== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 96px 0;
}

/* ===========================
   Typography
   =========================== */
h1, h2, h3, h4 {
    color: var(--color-navy);
    font-weight: 300;
    line-height: 1.15;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-title {
    font-size: 42px;
    font-weight: 300;
    letter-spacing: -1.2px;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    font-weight: 300;
    color: var(--color-body);
    max-width: 560px;
    margin: 0 auto;
}

.text-purple {
    color: var(--color-primary);
}

/* ===========================
   Buttons
   =========================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-sans);
    font-weight: 400;
    border: none;
    cursor: pointer;
    transition: all 0.15s ease;
    text-decoration: none;
    gap: 8px;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border-radius: 4px;
    padding: 8px 16px;
    font-size: 15px;
}

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

.btn-ghost {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 8px 16px;
    font-size: 15px;
}

.btn-ghost:hover {
    border-color: var(--color-primary);
    background: rgba(83, 58, 253, 0.04);
}

.btn-white {
    background: #fff;
    color: var(--color-dark);
    border-radius: 4px;
    padding: 8px 16px;
    font-size: 15px;
}

.btn-white:hover {
    box-shadow: var(--shadow-standard);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 14px;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 16px;
}

.btn-xl {
    padding: 16px 32px;
    font-size: 17px;
    flex-direction: column;
    gap: 4px;
}

.btn-block {
    width: 100%;
}

/* ===========================
   Header
   =========================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow 0.2s ease;
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--color-navy);
}

.logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 6px;
    font-weight: 600;
    font-size: 15px;
    letter-spacing: 0;
}

.logo-text {
    font-weight: 600;
    font-size: 17px;
    letter-spacing: -0.3px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    color: var(--color-body);
    text-decoration: none;
    font-size: 15px;
    font-weight: 400;
    transition: color 0.15s ease;
}

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

/* ===========================
   Hero
   =========================== */
.hero {
    padding: 140px 0 96px;
    background: var(--color-bg);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-title {
    font-size: 56px;
    font-weight: 300;
    letter-spacing: -1.4px;
    line-height: 1.08;
    margin-bottom: 24px;
    color: var(--color-navy);
}

.hero-subtitle {
    font-size: 18px;
    font-weight: 300;
    line-height: 1.65;
    color: var(--color-body);
    margin-bottom: 32px;
    max-width: 480px;
}

.hero-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.hero-actions .btn-lg {
    padding: 12px 24px;
}

.hero-actions .btn-primary {
    flex-direction: column;
    gap: 2px;
    padding: 14px 28px;
}

.cta-price {
    font-size: 14px;
    font-weight: 400;
    opacity: 0.9;
}

.cta-price .original-price {
    text-decoration: line-through;
    opacity: 0.65;
    margin-left: 4px;
}

.hero-meta {
    font-size: 14px;
    color: var(--color-body);
}

.meta-sep {
    margin: 0 8px;
    opacity: 0.4;
}

/* Phone Mockup */
.hero-visual {
    display: flex;
    justify-content: center;
}

.app-mockup {
    position: relative;
}

.phone-frame {
    width: 260px;
    height: 520px;
    background: var(--color-navy);
    border-radius: 32px;
    padding: 14px;
    box-shadow: var(--shadow-standard);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #fff;
    border-radius: 22px;
    overflow: hidden;
}

.app-interface {
    padding: 16px;
    height: 100%;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.app-header {
    text-align: center;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.status-bar {
    height: 16px;
    background: var(--color-primary);
    border-radius: 8px;
    margin-bottom: 8px;
    opacity: 0.15;
}

.app-header h3 {
    color: var(--color-navy);
    font-size: 14px;
    font-weight: 600;
}

.practice-card {
    background: #f7f9fc;
    border-radius: var(--radius);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
}

.ai-avatar {
    font-size: 1.5rem;
    text-align: center;
}

.message-bubble {
    background: #fff;
    padding: 12px;
    border-radius: var(--radius);
    font-size: 13px;
    color: var(--color-label);
    border: 1px solid var(--color-border);
    line-height: 1.5;
}

.controls {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
}

.record-btn {
    width: 40px;
    height: 40px;
    background: #fee2e2;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.progress-bar {
    flex: 1;
    height: 4px;
    background: var(--color-border);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    width: 60%;
    height: 100%;
    background: var(--color-primary);
    border-radius: 2px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ===========================
   Social Proof
   =========================== */
.social-proof {
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: 32px 0;
    background: #fafbfd;
}

.proof-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 48px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 28px;
    font-weight: 600;
    color: var(--color-navy);
    letter-spacing: -0.5px;
}

.stat-label {
    font-size: 13px;
    color: var(--color-body);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-weight: 400;
}

.stat-divider {
    width: 1px;
    height: 32px;
    background: var(--color-border);
}

/* ===========================
   Features
   =========================== */
.features-section {
    background: var(--color-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: #fff;
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.feature-card:hover {
    box-shadow: var(--shadow-ambient);
    transform: translateY(-2px);
}

.feature-icon-wrap {
    width: 44px;
    height: 44px;
    border-radius: var(--radius);
    background: rgba(83, 58, 253, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-title {
    font-size: 18px;
    font-weight: 500;
    color: var(--color-navy);
    margin-bottom: 10px;
}

.feature-description {
    font-size: 15px;
    line-height: 1.65;
    color: var(--color-body);
}

/* ===========================
   Testimonials
   =========================== */
.testimonials-section {
    background: #fafbfd;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: #fff;
    padding: 28px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: box-shadow 0.2s ease;
}

.testimonial-card:hover {
    box-shadow: var(--shadow-ambient);
}

.testimonial-content {
    margin-bottom: 24px;
}

.stars {
    color: #f4a623;
    font-size: 14px;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.testimonial-text {
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-label);
    font-style: normal;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}

.author-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

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

.author-name {
    font-weight: 500;
    font-size: 14px;
    color: var(--color-navy);
}

.author-role {
    font-size: 13px;
    color: var(--color-body);
}

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

.pricing-container {
    max-width: 480px;
    margin: 0 auto;
}

.price-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 40px 36px;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-standard);
    position: relative;
}

.price-badge {
    background: var(--color-primary);
    color: #fff;
    padding: 6px 16px;
    border-radius: 4px;
    font-weight: 500;
    font-size: 13px;
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
    letter-spacing: 0.2px;
}

.price-header {
    text-align: center;
    margin-bottom: 32px;
    padding-top: 8px;
}

.price-amount {
    display: flex;
    justify-content: center;
    align-items: baseline;
    gap: 12px;
    margin: 16px 0 8px;
}

.current-price {
    font-size: 56px;
    font-weight: 300;
    color: var(--color-navy);
    letter-spacing: -1.5px;
}

.price-card .original-price {
    font-size: 24px;
    color: var(--color-body);
    text-decoration: line-through;
    font-weight: 300;
    opacity: 0.6;
}

.price-period {
    color: var(--color-body);
    font-size: 15px;
}

.price-description {
    color: var(--color-label);
    font-size: 14px;
    margin-top: 4px;
}

.price-features {
    margin-bottom: 28px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 15px;
    color: var(--color-label);
    border-bottom: 1px solid #f2f5f9;
}

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

.feature-item svg {
    flex-shrink: 0;
}

.price-guarantees {
    text-align: center;
    margin-top: 20px;
    font-size: 13px;
    color: var(--color-body);
    line-height: 1.8;
}

/* Comparison Table */
.pricing-comparison {
    margin-top: 40px;
}

.pricing-comparison h3 {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-navy);
    margin-bottom: 16px;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
}

.comparison-table td {
    padding: 10px 12px;
    font-size: 15px;
}

.comparison-table tr {
    border-bottom: 1px solid var(--color-border);
}

.comparison-table tr:last-child {
    border-bottom: none;
}

.comparison-service {
    color: var(--color-body);
}

.comparison-price {
    text-align: right;
    font-weight: 500;
    color: var(--color-label);
    font-family: var(--font-mono);
    font-size: 14px;
}

.comparison-table tr.highlighted {
    background: rgba(83, 58, 253, 0.04);
    border-radius: 4px;
}

.comparison-table tr.highlighted td {
    color: var(--color-primary);
    font-weight: 500;
}

.comparison-table tr.highlighted .comparison-price {
    color: var(--color-primary);
    font-weight: 600;
}

/* ===========================
   FAQ
   =========================== */
.faq-section {
    background: #fafbfd;
    border-top: 1px solid var(--color-border);
}

.faq-container {
    max-width: 640px;
    margin: 0 auto;
}

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

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

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    color: var(--color-navy);
    transition: color 0.15s ease;
}

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

.faq-toggle {
    font-size: 20px;
    font-weight: 300;
    color: var(--color-body);
    transition: transform 0.2s ease;
    flex-shrink: 0;
    margin-left: 16px;
}

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

.faq-answer {
    display: none;
    padding-bottom: 20px;
}

.faq-answer p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-body);
}

.faq-item.active .faq-answer {
    display: block;
}

/* ===========================
   Final CTA
   =========================== */
.final-cta-section {
    padding: 96px 0;
    background: var(--color-dark);
    color: #fff;
    text-align: center;
}

.final-cta-content {
    max-width: 560px;
    margin: 0 auto;
}

.final-cta-title {
    font-size: 42px;
    font-weight: 300;
    letter-spacing: -1.2px;
    margin-bottom: 16px;
    color: #fff;
}

.final-cta-subtitle {
    font-size: 17px;
    font-weight: 300;
    opacity: 0.75;
    margin-bottom: 32px;
    line-height: 1.65;
}

.urgency-indicators {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.urgency-item {
    font-size: 14px;
    opacity: 0.6;
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-white.btn-xl {
    margin: 0 auto 24px;
    display: flex;
    padding: 18px 36px;
    border-radius: 4px;
    font-weight: 400;
}

.btn-white.btn-xl:hover {
    transform: translateY(-1px);
    box-shadow: rgba(50,50,93,0.25) 0px 30px 45px -20px, rgba(0,0,0,0.2) 0px 18px 36px -18px;
}

.cta-main-text {
    font-size: 17px;
    font-weight: 500;
    color: var(--color-navy);
}

.cta-sub-text {
    font-size: 13px;
    color: var(--color-body);
    font-weight: 400;
}

.payment-security {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    opacity: 0.5;
}

.security-text {
    color: #fff;
}

.stripe-badge {
    background: rgba(255,255,255,0.15);
    color: #fff;
    padding: 2px 8px;
    border-radius: 3px;
    font-weight: 600;
    font-size: 12px;
    letter-spacing: 0.3px;
}

/* ===========================
   Footer
   =========================== */
.footer {
    background: var(--color-navy);
    color: rgba(255,255,255,0.55);
    padding: 56px 0 24px;
}

.footer .logo {
    margin-bottom: 12px;
}

.footer .logo-mark {
    background: rgba(255,255,255,0.12);
    color: #fff;
}

.footer .logo-text {
    color: #fff;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
}

.footer-description {
    font-size: 14px;
    line-height: 1.6;
    max-width: 260px;
}

.footer-section h4 {
    color: rgba(255,255,255,0.85);
    margin-bottom: 16px;
    font-weight: 500;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

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

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: rgba(255,255,255,0.55);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.15s ease;
}

.footer-links a:hover {
    color: #fff;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.08);
    font-size: 13px;
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 48px;
        text-align: center;
    }

    .hero-subtitle {
        max-width: 100%;
    }

    .hero-actions {
        justify-content: center;
    }

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

    .hero-title {
        font-size: 44px;
    }

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

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

@media (max-width: 768px) {
    .section {
        padding: 64px 0;
    }

    .nav {
        display: none;
    }

    .hero {
        padding: 100px 0 64px;
    }

    .hero-title {
        font-size: 36px;
        letter-spacing: -0.8px;
    }

    .section-title {
        font-size: 32px;
        letter-spacing: -0.8px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .proof-stats {
        gap: 24px;
    }

    .stat-divider {
        display: none;
    }

    .urgency-indicators {
        flex-direction: column;
        align-items: center;
        gap: 8px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .final-cta-title {
        font-size: 32px;
    }

    .final-cta-section {
        padding: 64px 0;
    }

    .phone-frame {
        width: 220px;
        height: 440px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .section-title {
        font-size: 26px;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .proof-stats {
        flex-direction: column;
        gap: 16px;
    }

    .feature-card {
        padding: 24px;
    }

    .price-card {
        padding: 28px 24px;
    }

    .current-price {
        font-size: 44px;
    }

    .btn-white.btn-xl {
        padding: 14px 20px;
    }

    .phone-frame {
        width: 190px;
        height: 380px;
    }
}

/* ===========================
   States & Animations
   =========================== */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===========================
   Accessibility
   =========================== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ===========================
   Print
   =========================== */
@media print {
    .header, .footer, .final-cta-section {
        display: none;
    }
    .hero {
        padding-top: 0;
    }
}