/* Whispr - Premium Open Source Design */

:root {
    /* Premium "Paper" Palette */
    --bg-primary: #FDFBF7;
    /* Cream/Off-white */
    --bg-secondary: #F3F1EC;
    --text-primary: #1A1A1A;
    /* Almost black */
    --text-secondary: #4A4A4A;
    --text-tertiary: #717171;

    /* Accents */
    --accent-dark: #111827;
    --accent-green: #065F46;
    /* Deep forest green */
    --accent-blue: #2563EB;

    /* Borders & Decor */
    --border-subtle: rgba(0, 0, 0, 0.06);
    --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.05);
    --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.04);

    /* Typography */
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Inter', -apple-system, sans-serif;

    --container-width: 1100px;
    --radius-lg: 24px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
}

/* Typography Overrides */
h1,
h2,
h3 {
    font-family: var(--font-serif);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.serif-italic {
    font-style: italic;
    font-weight: 400;
}

/* Navigation */
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    max-width: var(--container-width);
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.logo-icon {
    width: 24px;
    height: 24px;
    color: var(--accent-dark);
}

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

.nav-link {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
}

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

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 1.5rem 2rem;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto 3rem;
}

.badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: #EBE9E4;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    text-decoration: none;
    transition: all 0.2s ease;
}

.badge:hover {
    background: #E5E5E5;
    transform: translateY(-2px);
    color: var(--text-primary);
}

.hero h1 {
    font-size: clamp(3rem, 6vw, 4.5rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.tagline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 580px;
    margin: 0 auto 2rem;
    line-height: 1.6;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 500;
    font-size: 1rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
    background: var(--text-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-primary:hover {
    transform: translateY(-2px);
    background: black;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: white;
    border: 1px solid #E5E5E5;
    color: var(--text-primary);
}

.btn-secondary:hover {
    border-color: #D4D4D4;
    background: #FAFAFA;
}

.note {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

/* Hero Visual */
.hero-visual {
    margin: 3rem auto 0;
    padding: 0 1rem;
    max-width: 1000px;
}

.mockup-container {
    border-radius: 20px;
    box-shadow: 0 20px 60px -10px rgba(0, 0, 0, 0.12);
    overflow: hidden;
    background: white;
}

/* Comparison Section */
.comparison {
    padding: 6rem 1.5rem;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.comparison-table {
    max-width: 900px;
    margin: 0 auto;
    border: 1px solid #E5E5E5;
    border-radius: 16px;
    overflow: hidden;
}

.table-header,
.table-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    padding: 1.25rem 2rem;
    align-items: center;
}

.table-header {
    background: #FAFAFA;
    border-bottom: 1px solid #E5E5E5;
    font-weight: 600;
    color: var(--text-tertiary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table-row {
    border-bottom: 1px solid #F5F5F5;
}

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

.col-whispr {
    font-weight: 600;
    color: var(--text-primary);
}

.highlight-text {
    color: var(--accent-green);
}

.col-others {
    color: var(--text-secondary);
}

/* Social Proof */
.social-proof {
    text-align: center;
    padding: 4rem 1.5rem;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.social-proof p {
    font-size: 1.1rem;
    font-family: var(--font-serif);
    font-style: italic;
    color: var(--text-secondary);
}

/* Use Cases */
.use-cases {
    padding: 6rem 1.5rem;
    background: var(--bg-primary);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: var(--container-width);
    margin: 0 auto;
}

.card {
    background: white;
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    transition: transform 0.2s ease;
    border: 1px solid transparent;
}

.card:hover {
    transform: translateY(-5px);
    border-color: #E5E5E5;
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    font-family: var(--font-sans);
}

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

/* Features */
.features {
    padding: 6rem 1.5rem;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: var(--container-width);
    margin: 0 auto;
}

.feature {
    padding: 2rem;
    background: var(--bg-primary);
    border-radius: 16px;
}

.feature-wide {
    grid-column: span 1;
    /* In modern grid, maybe keeping 3 columns is cleaner */
}

.feature h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    font-family: var(--font-sans);
}

.feature p {
    color: var(--text-secondary);
}

/* How It Works */
.how-it-works {
    padding: 6rem 1.5rem;
    background: var(--bg-secondary);
    text-align: center;
}

.how-it-works h2 {
    margin-bottom: 3rem;
    font-size: 2.5rem;
}

.steps {
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
    gap: 1rem;
}

.step {
    flex: 1;
}

.step-number {
    font-family: var(--font-serif);
    font-size: 3rem;
    color: #D4D4D4;
    margin-bottom: 1rem;
    line-height: 1;
}

.step-line {
    width: 60px;
    height: 1px;
    background: #D4D4D4;
    margin-top: -2rem;
}

.step h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    font-family: var(--font-sans);
}

.step p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* FAQ */
.faq {
    padding: 6rem 1.5rem;
    max-width: 700px;
    margin: 0 auto;
}

.faq h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
}

.faq-list {
    display: grid;
    gap: 2rem;
}

.faq-item {
    border-bottom: 1px solid #E5E5E5;
    padding-bottom: 2rem;
}

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

.faq-item h3 {
    font-family: var(--font-sans);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.faq-item p {
    color: var(--text-secondary);
}

/* Download */
.download {
    text-align: center;
    padding: 8rem 1.5rem;
    background: var(--bg-secondary);
}

.download h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.download p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
}

.requirements {
    font-size: 0.9rem;
    margin-top: 1.5rem;
    display: block;
}

/* Footer */
.footer {
    padding: 4rem 1.5rem;
    background: white;
    border-top: 1px solid #F0F0F0;
}

.footer-content {
    max-width: var(--container-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand {
    font-weight: 700;
    font-size: 1.25rem;
    font-family: var(--font-serif);
}

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

.footer-links-group a {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.footer-links-group a:hover {
    color: var(--text-primary);
}

/* Mobile Responsive */
@media (max-width: 900px) {

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

    .table-header,
    .table-row {
        grid-template-columns: 1fr 1fr;
    }

    .col-others,
    .table-header div:nth-child(3) {
        display: none;
        /* Hide competitor column on tablet if squeezed */
    }
}

@media (max-width: 700px) {

    /* Navigation */
    .nav {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .nav-links {
        display: none;
    }

    /* Hero */
    .hero {
        padding-top: 3rem;
    }

    .hero h1 {
        font-size: 2.75rem;
    }

    /* Stack Grids */
    .cards-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }

    /* Comparison Table for Mobile */
    .comparison-table {
        border: none;
    }

    .table-header {
        display: none;
    }

    .table-row {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
        background: #FAFAFA;
        margin-bottom: 1rem;
        padding: 1.5rem;
        border-radius: 12px;
        border: 1px solid #E5E5E5;
    }

    .col-feature {
        font-size: 0.85rem;
        text-transform: uppercase;
        color: var(--text-tertiary);
        margin-bottom: 0.25rem;
    }

    .col-whispr {
        font-size: 1.1rem;
    }

    .col-others {
        display: block;
        /* Show back on mobile as stacked item */
        font-size: 0.9rem;
    }

    /* How It Works Stack */
    .steps {
        flex-direction: column;
        gap: 2rem;
    }

    .step-line {
        width: 1px;
        height: 40px;
        margin: 0;
    }

    /* Footer Stack */
    .footer-content {
        flex-direction: column;
        gap: 2rem;
    }
}