/* ================================================
   RENTAL FINANCE DESIGN SYSTEM
   ================================================
   Professional, finance-oriented design system
   for rental property financial dashboard SaaS.
   
   Keywords: trust, clarity, performance, cash-flow,
   investment, control.
   
   Target feeling: serious, premium, modern SaaS,
   not generic, not "fun startup".
   ================================================ */

/* ================================================
   COLOR PALETTE
   ================================================ */
:root {
    /* Primary (brand) - Deep blue / blue pétrole */
    --color-primary: #0F2A44;
    --color-primary-light: #163A5F;
    --color-primary-dark: #0A1E2E;
    --color-primary-soft: rgba(15, 42, 68, 0.08);

    /* Success / Positive (financial indicators) */
    --color-success: #2FBF71;
    --color-success-soft: #E8F8F1;
    --color-success-dark: #25A05A;

    /* Backgrounds */
    --color-bg: #F7F9FC;
    --color-card: #FFFFFF;
    --color-bg-dark: #0F172A;

    /* Text */
    --color-text-main: #0F172A;
    --color-text-secondary: #475569;
    --color-text-muted: #64748B;

    /* Borders / Separators */
    --color-border: #E2E8F0;
    --color-border-light: #F1F5F9;

    /* Accent (rare, optional) */
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --color-error-soft: rgba(239, 68, 68, 0.1);

    /* Spacing Scale */
    --spacing-xs: 0.5rem;
    /* 8px */
    --spacing-sm: 1rem;
    /* 16px */
    --spacing-md: 1.5rem;
    /* 24px */
    --spacing-lg: 2rem;
    /* 32px */
    --spacing-xl: 3rem;
    /* 48px */
    --spacing-2xl: 4rem;
    /* 64px */
    --spacing-3xl: 6rem;
    /* 96px */

    /* Typography */
    --font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    /* 12px */
    --font-size-sm: 0.875rem;
    /* 14px */
    --font-size-base: 1rem;
    /* 16px */
    --font-size-lg: 1.125rem;
    /* 18px */
    --font-size-xl: 1.25rem;
    /* 20px */
    --font-size-2xl: 1.5rem;
    /* 24px */
    --font-size-3xl: 2rem;
    /* 32px */
    --font-size-4xl: 2.5rem;
    /* 40px */
    --font-size-5xl: 3rem;
    /* 48px */

    /* Font Weights */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Line Heights */
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.8;

    /* Border Radius */
    --radius-sm: 0.375rem;
    /* 6px */
    --radius-md: 0.5rem;
    /* 8px */
    --radius-lg: 0.75rem;
    /* 12px */
    --radius-xl: 1rem;
    /* 16px */
    --radius-2xl: 1.5rem;
    /* 24px */

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(15, 42, 68, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(15, 42, 68, 0.1), 0 2px 4px -2px rgba(15, 42, 68, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(15, 42, 68, 0.1), 0 4px 6px -4px rgba(15, 42, 68, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(15, 42, 68, 0.1), 0 8px 10px -6px rgba(15, 42, 68, 0.1);
    --shadow-card: 0 1px 3px 0 rgba(15, 42, 68, 0.1), 0 1px 2px -1px rgba(15, 42, 68, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;
}

/* ================================================
   RESET & BASE
   ================================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-main);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ================================================
   TYPOGRAPHY SYSTEM
   ================================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-text-main);
    letter-spacing: -0.02em;
}

h1 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.03em;
}

h2 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
}

h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
}

@media (min-width: 768px) {
    h1 {
        font-size: var(--font-size-4xl);
    }

    h2 {
        font-size: var(--font-size-3xl);
    }

    h3 {
        font-size: var(--font-size-2xl);
    }
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

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

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

.section {
    padding: var(--spacing-2xl) 0;
}

@media (min-width: 768px) {
    .section {
        padding: var(--spacing-3xl) 0;
    }
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text-main);
}

@media (min-width: 768px) {
    .section-title {
        margin-bottom: var(--spacing-2xl);
    }
}

/* ================================================
   BUTTON SYSTEM
   ================================================ */
.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: var(--font-weight-semibold);
    font-family: var(--font-family);
    text-align: center;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    line-height: 1.5;
}

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

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--color-primary-light);
    color: #FFFFFF;
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background-color: var(--color-primary);
    color: #FFFFFF;
    border-color: var(--color-primary);
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-text-secondary);
    border: none;
}

.btn-ghost:hover,
.btn-ghost:focus {
    background-color: var(--color-primary-soft);
    color: var(--color-primary);
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

.btn-full {
    width: 100%;
}

/* ================================================
   CARD SYSTEM
   ================================================ */
.card {
    background-color: var(--color-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
    transition: var(--transition);
}

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

/* ================================================
   BADGE SYSTEM
   ================================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-sm);
    line-height: 1;
}

.badge-success {
    background-color: var(--color-success-soft);
    color: var(--color-success-dark);
}

.badge-neutral {
    background-color: var(--color-primary-soft);
    color: var(--color-primary);
}

/* ================================================
   FORM SYSTEM
   ================================================ */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    color: var(--color-text-main);
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

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

.form-group input::placeholder {
    color: var(--color-text-muted);
}

.form-group input:invalid:not(:placeholder-shown) {
    border-color: var(--color-error);
}

.form-group input:valid:not(:placeholder-shown) {
    border-color: var(--color-success);
}

.error-message {
    display: block;
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

.success-message {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background-color: var(--color-success-soft);
    border: 1px solid var(--color-success);
    border-radius: var(--radius-md);
    color: var(--color-success-dark);
    font-weight: var(--font-weight-medium);
}

.success-message svg {
    flex-shrink: 0;
    color: var(--color-success);
}

.success-message p {
    margin: 0;
    color: var(--color-success-dark);
}

/* ================================================
   LINKS
   ================================================ */
a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition);
}

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

/* ================================================
   SCREEN READER ONLY
   ================================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ================================================
   NAVBAR
   ================================================ */
.navbar {
    position: sticky;
    top: 0;
    background-color: rgba(15, 42, 68, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

.logo {
    display: inline-flex;
    align-items: center;
}

.logo img {
    height: 80px;
    width: auto;
    display: block;
    transition: opacity var(--transition);
}

.logo:hover img,
.logo:focus img {
    opacity: 0.85;
}

.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: #FFFFFF;
    transition: var(--transition);
    border-radius: 2px;
}

@media (min-width: 768px) {
    .mobile-menu-toggle {
        display: none;
    }
}

.nav-links {
    display: none;
    list-style: none;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-links.active {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-primary);
    flex-direction: column;
    padding: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-lg);
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
        position: static;
        flex-direction: row;
        padding: 0;
        box-shadow: none;
        border: none;
        background-color: transparent;
    }
}

.nav-link {
    color: rgba(255, 255, 255, 0.9);
    font-weight: var(--font-weight-medium);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link:focus {
    color: #FFFFFF;
}

.language-switcher {
    display: flex;
    align-items: center;
}

.language-switcher .btn-ghost {
    color: rgba(255, 255, 255, 0.9);
    padding: var(--spacing-xs) var(--spacing-sm);
}

.language-switcher .btn-ghost:hover,
.language-switcher .btn-ghost:focus {
    background-color: rgba(255, 255, 255, 0.1);
    color: #FFFFFF;
}

.language-switcher .lang-label {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    letter-spacing: 0.02em;
}

/* ================================================
   HERO SECTION
   ================================================ */
.hero {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: #FFFFFF;
}

@media (min-width: 768px) {
    .hero {
        padding: var(--spacing-3xl) 0;
    }
}

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

.hero-title {
    margin-bottom: var(--spacing-md);
    color: #FFFFFF;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
    line-height: var(--line-height-relaxed);
}

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

.hero .btn-primary {
    background-color: #FFFFFF;
    color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.hero .btn-primary:hover,
.hero .btn-primary:focus {
    background-color: var(--color-bg);
    color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.hero .btn-secondary {
    background-color: transparent;
    color: #FFFFFF;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.hero .btn-secondary:hover,
.hero .btn-secondary:focus {
    background-color: rgba(255, 255, 255, 0.1);
    color: #FFFFFF;
    border-color: #FFFFFF;
}

.hero-micro {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
    margin-top: var(--spacing-lg);
    margin-bottom: 0;
}

@media (min-width: 768px) {
    .hero-cta {
        flex-direction: row;
        justify-content: center;
    }
}

.hero-visual {
    margin-top: var(--spacing-2xl);
}

.dashboard-mockup {
    background-color: var(--color-card);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid var(--color-border);
}

.mockup-header {
    display: flex;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

.mockup-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--color-border);
}

.mockup-content {
    padding: var(--spacing-lg);
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

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

.mockup-card {
    background-color: var(--color-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.mockup-card-large {
    grid-column: 1 / -1;
}

@media (min-width: 768px) {
    .mockup-card-large {
        grid-column: span 2;
    }
}

.mockup-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.mockup-icon {
    font-size: var(--font-size-xl);
}

.mockup-card-header h3 {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
}

.mockup-amount {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-main);
}

.mockup-amount-large {
    font-size: var(--font-size-4xl);
    color: var(--color-success);
    font-weight: var(--font-weight-bold);
}

.mockup-trend {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
    font-weight: var(--font-weight-medium);
}

.mockup-chart {
    display: flex;
    align-items: flex-end;
    gap: var(--spacing-xs);
    height: 60px;
    margin-top: var(--spacing-md);
}

.chart-bar {
    flex: 1;
    background: linear-gradient(to top, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    min-height: 20px;
}

/* ================================================
   SECTION BACKGROUNDS
   ================================================ */
.section-problem {
    background-color: var(--color-bg);
}

.section-solution {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: #FFFFFF;
}

.section-how {
    background-color: var(--color-bg);
}

.section-audience {
    background-color: var(--color-card);
}

.section-beta {
    background-color: var(--color-bg);
}

.section-founder {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    color: #FFFFFF;
}

.section-cta {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: #FFFFFF;
}

/* ================================================
   PROBLEM SECTION
   ================================================ */
.problem-list {
    list-style: none;
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

.problem-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    background-color: var(--color-bg);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-error);
}

.problem-list .icon {
    flex-shrink: 0;
    color: var(--color-error);
}

.problem-close {
    text-align: center;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-main);
    margin-top: var(--spacing-xl);
}

/* Problem cards (3 cards) */
.problem-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    max-width: 1000px;
    margin: 0 auto;
}

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

.problem-card {
    background-color: var(--color-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
    text-align: center;
    transition: var(--transition);
}

.problem-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.problem-card-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    line-height: 1;
}

.problem-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-main);
    font-size: var(--font-size-lg);
}

.problem-card p {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

/* Features section (5 bullets) */
.section-features {
    background-color: var(--color-card);
}

.features-list {
    list-style: none;
    max-width: 700px;
    margin: 0 auto;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border-light);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

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

.feature-icon {
    flex-shrink: 0;
    font-size: var(--font-size-xl);
    line-height: 1;
}

.feature-item strong {
    color: var(--color-text-main);
}

/* Screenshots section */
.screenshots-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

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

.screenshot-item {
    margin: 0;
}

.screenshot-placeholder {
    width: 100%;
    aspect-ratio: 16 / 10;
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-border-light) 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

.screenshot-placeholder-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-muted);
}

.screenshot-item figcaption {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-normal);
}

/* Pricing teaser */
.pricing-intro {
    text-align: center;
    max-width: 560px;
    margin: 0 auto var(--spacing-xl);
    color: var(--color-text-secondary);
}

.pricing-teaser {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    max-width: 800px;
    margin: 0 auto;
}

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

.pricing-tier {
    background-color: var(--color-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    text-align: center;
}

.pricing-tier h3 {
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-main);
    font-size: var(--font-size-lg);
}

.pricing-tier p {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* FAQ section */
.faq-list {
    max-width: 640px;
    margin: 0 auto;
}

.faq-item {
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--color-border);
}

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

.faq-item dt {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-main);
    margin-bottom: var(--spacing-xs);
}

.faq-item dd {
    margin: 0;
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

.section-solution .section-title {
    color: #FFFFFF;
}

.section-solution .solution-card {
    background-color: var(--color-card);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.section-solution .solution-card h3 {
    color: var(--color-text-main);
}

.section-solution .solution-card p {
    color: var(--color-text-secondary);
}

.section-founder .founder-note h2 {
    color: #FFFFFF;
}

.section-founder .founder-note p {
    color: rgba(255, 255, 255, 0.9);
}

/* ================================================
   SOLUTION SECTION
   ================================================ */
.solution-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

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

@media (min-width: 1024px) {
    .solution-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.solution-card {
    background-color: var(--color-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
    transition: var(--transition);
}

.solution-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--color-primary);
}

.solution-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: #FFFFFF;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.solution-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-main);
}

.solution-card p {
    color: var(--color-text-secondary);
    margin: 0;
}

/* ================================================
   HOW IT WORKS
   ================================================ */
.how-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .how-steps {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-lg);
    }
}

.how-step {
    text-align: center;
    position: relative;
}

.step-number {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: #FFFFFF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    z-index: 1;
    box-shadow: var(--shadow-md);
}

.step-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
    border: 2px solid var(--color-border);
}

.how-step h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-main);
}

.how-step p {
    color: var(--color-text-secondary);
    margin: 0;
}

/* ================================================
   AUDIENCE SECTION
   ================================================ */
.audience-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    max-width: 900px;
    margin: 0 auto;
}

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

.audience-card {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background-color: var(--color-card);
    box-shadow: var(--shadow-card);
}

.audience-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-main);
}

.audience-card ul {
    list-style: none;
}

.audience-card li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
}

.audience-card-positive svg {
    color: var(--color-success);
    flex-shrink: 0;
}

.audience-card-negative svg {
    color: var(--color-error);
    flex-shrink: 0;
}

.audience-card li span {
    color: var(--color-text-secondary);
}

/* ================================================
   BETA FORM
   ================================================ */
.beta-card {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--color-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
}

.beta-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-main);
}

.beta-benefits {
    list-style: none;
    margin-bottom: var(--spacing-xl);
}

.beta-benefits li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
}

.beta-benefits svg {
    color: var(--color-success);
    flex-shrink: 0;
}

.beta-benefits li span {
    color: var(--color-text-secondary);
}

.beta-form {
    margin-bottom: var(--spacing-md);
}

.form-privacy {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--spacing-md);
}

/* ================================================
   FOUNDER NOTE
   ================================================ */
.founder-note {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.founder-note h2 {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-main);
}

.founder-note p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

/* ================================================
   CTA BAND
   ================================================ */
.cta-band {
    text-align: center;
    color: #FFFFFF;
}

.cta-band h2 {
    color: #FFFFFF;
    margin-bottom: var(--spacing-lg);
}

.cta-band .btn-primary {
    background-color: #FFFFFF;
    color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.cta-band .btn-primary:hover,
.cta-band .btn-primary:focus {
    background-color: var(--color-bg);
    color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* ================================================
   FOOTER
   ================================================ */
.footer {
    background-color: var(--color-bg-dark);
    color: var(--color-text-muted);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

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

.footer-brand .logo {
    margin-bottom: var(--spacing-sm);
}

.footer-brand .logo img {
    height: 32px;
}

.footer-brand p {
    color: var(--color-text-muted);
    margin: 0;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-links a {
    color: var(--color-primary-light);
}

.footer-links a:hover,
.footer-links a:focus {
    color: #FFFFFF;
}

.footer-contact a {
    color: var(--color-primary-light);
}

.footer-contact a:hover,
.footer-contact a:focus {
    color: #FFFFFF;
}

.footer-copyright {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* ================================================
   STICKY CTA MOBILE
   ================================================ */
.sticky-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md) var(--spacing-md) calc(var(--spacing-md) + env(safe-area-inset-bottom));
    background: linear-gradient(to top, rgba(247, 249, 252, 0.98) 0%, rgba(255, 255, 255, 0.98) 100%);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--color-border);
    box-shadow: 0 -4px 20px rgba(15, 42, 68, 0.15);
    z-index: 999;
    display: none;
}

.sticky-cta .btn {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: #FFFFFF;
    box-shadow: 0 4px 12px rgba(15, 42, 68, 0.3), 0 2px 4px rgba(15, 42, 68, 0.2);
    border: none;
    animation: pulse-glow 2s ease-in-out infinite;
    transition: var(--transition);
}

.sticky-cta .btn:hover,
.sticky-cta .btn:focus {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(15, 42, 68, 0.4), 0 4px 8px rgba(15, 42, 68, 0.3);
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
}

.sticky-cta .btn:active {
    transform: translateY(0);
}

@keyframes pulse-glow {

    0%,
    100% {
        box-shadow: 0 4px 12px rgba(15, 42, 68, 0.3), 0 2px 4px rgba(15, 42, 68, 0.2);
    }

    50% {
        box-shadow: 0 4px 16px rgba(15, 42, 68, 0.4), 0 2px 6px rgba(15, 42, 68, 0.3), 0 0 0 4px rgba(15, 42, 68, 0.1);
    }
}

@media (max-width: 767px) {
    .sticky-cta {
        display: block;
    }
}

/* ================================================
   ICONS
   ================================================ */
.icon {
    flex-shrink: 0;
}

/* ================================================
   ACCESSIBILITY - FOCUS STATES
   ================================================ */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

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

input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 0;
}