/* =====================================================
   Tuutio Landing Page Styles
   Light mode aesthetic inspired by resend.com

   IMPORTANT: This file imports canonical design tokens.
   Do not redefine tokens here - extend only if needed.
   ===================================================== */

/* Import canonical design tokens */
@import url('/css/base/variables.css');

/* Home-specific tokens (extensions only) */
:root {
    /* Subtle gradient for sections - home page specific */
    --gradient-subtle: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);

    /* Lighter border for grid patterns */
    --border-light: var(--bg-tertiary);
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent-primary);
    color: var(--bg-primary);
    padding: var(--space-2) var(--space-4);
    z-index: 1000;
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    border-radius: 0 0 var(--radius-md) 0;
    transition: top var(--transition-normal);
}

.skip-link:focus {
    top: 0;
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

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

html {
    scroll-behavior: smooth;
}

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

/* =====================================================
   Navigation
   ===================================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition-slow);
}

.nav.scrolled {
    border-bottom-color: var(--border-color);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-4) var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.logo-icon img {
    width: 100%;
    height: 100%;
    border-radius: inherit;
}

.logo-text {
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-xl);
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: var(--space-8);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-normal);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* Mobile menu toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-1);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-slow);
}

.mobile-menu-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.open span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile navigation */
.mobile-nav {
    display: none;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--space-4) var(--space-6);
    flex-direction: column;
    gap: var(--space-2);
    z-index: 99;
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    transition: all var(--transition-slow);
}

.mobile-nav.open {
    transform: translateY(0);
    opacity: 1;
}

.mobile-nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    padding: var(--space-3) 0;
}

.mobile-nav-divider {
    height: 1px;
    background: var(--border-color);
    margin: var(--space-2) 0;
}

.mobile-cta {
    margin-top: var(--space-2);
    text-align: center;
}

/* =====================================================
   Buttons
   ===================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-5);
    font-family: var(--font-family-base);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: var(--gradient-warm);
    color: var(--bg-primary);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
}

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

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

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.btn-lg {
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
    border-radius: var(--radius-xl);
}

.btn-arrow {
    transition: transform var(--transition-normal);
}

.btn:hover .btn-arrow {
    transform: translateX(4px);
}

/* =====================================================
   Hero Section
   ===================================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px var(--space-6) 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-gradient {
    position: absolute;
    top: -40%;
    left: 50%;
    transform: translateX(-50%);
    width: 140%;
    height: 80%;
    background: radial-gradient(ellipse at center, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(to right, var(--border-light) 1px, transparent 1px),
        linear-gradient(to bottom, var(--border-light) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: linear-gradient(to bottom, transparent 0%, black 30%, black 70%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 30%, black 70%, transparent 100%);
}

.hero-container {
    position: relative;
    max-width: 900px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

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

.hero-title {
    font-size: clamp(var(--font-size-4xl), 8vw, 72px);
    font-weight: 800;
    line-height: var(--line-height-tight);
    letter-spacing: -2px;
    margin-bottom: var(--space-6);
}

.gradient-text {
    background: var(--gradient-warm);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-10);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-16);
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-8);
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.stat-label {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    font-weight: var(--font-weight-medium);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

/* =====================================================
   Sections Common
   ===================================================== */

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-16);
}

.section-title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-4xl));
    font-weight: var(--font-weight-bold);
    letter-spacing: -1px;
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.7;
}

/* =====================================================
   Features Section
   ===================================================== */

.features {
    padding: 100px 0;
    background: var(--gradient-subtle);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-6);
}

.feature-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    transition: all var(--transition-slow);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-5);
    color: var(--accent-primary);
}

.feature-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-3);
}

.feature-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-normal);
}

/* =====================================================
   How It Works Section
   ===================================================== */

.how-it-works {
    padding: 100px 0;
    background: var(--bg-primary);
}

.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    flex-wrap: wrap;
}

.step {
    flex: 1;
    min-width: 280px;
    max-width: 340px;
    text-align: center;
    padding: 0 var(--space-6);
}

.step-number {
    width: 56px;
    height: 56px;
    background: var(--gradient-warm);
    color: var(--bg-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin: 0 auto var(--space-6);
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.25);
}

.step-connector {
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, var(--border-color) 0%, var(--accent-primary) 50%, var(--border-color) 100%);
    margin-top: 28px;
    flex-shrink: 0;
}

.step-content {
    text-align: center;
}

.step-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-3);
}

.step-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-normal);
}

/* =====================================================
   Pricing Section
   ===================================================== */

.pricing {
    padding: 100px 0;
    background: var(--gradient-subtle);
}

.pricing-card {
    max-width: 480px;
    margin: 0 auto;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: var(--space-12) var(--space-10);
    text-align: center;
    position: relative;
    box-shadow: var(--shadow-lg);
}

.pricing-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-warm);
    color: var(--bg-primary);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    padding: var(--space-1) var(--space-5);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pricing-amount {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--space-1);
    margin-bottom: var(--space-2);
}

.pricing-currency {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
}

.pricing-value {
    font-size: 72px;
    font-weight: 800;
    letter-spacing: -3px;
    color: var(--text-primary);
    line-height: 1;
}

.pricing-period {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--text-muted);
}

.pricing-tagline {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
}

.pricing-features {
    list-style: none;
    text-align: left;
    margin-bottom: var(--space-8);
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-light);
}

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

.check-icon {
    color: var(--accent-primary);
    flex-shrink: 0;
}

.pricing-cta {
    width: 100%;
    margin-bottom: var(--space-4);
}

.pricing-note {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.pricing-promise {
    display: flex;
    justify-content: center;
    gap: var(--space-10);
    margin-top: var(--space-12);
    flex-wrap: wrap;
}

.promise-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
}

.promise-icon {
    font-size: var(--font-size-base);
}

/* =====================================================
   Who It's For Section
   ===================================================== */

.who-its-for {
    padding: 100px 0;
    background: var(--bg-primary);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-6);
}

.use-case-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    text-align: center;
    transition: all var(--transition-slow);
}

.use-case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.use-case-icon {
    font-size: var(--space-12);
    margin-bottom: var(--space-5);
    line-height: 1;
}

.use-case-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-3);
    color: var(--text-primary);
}

.use-case-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-normal);
}

/* =====================================================
   CTA Section
   ===================================================== */

.cta {
    padding: 100px var(--space-6);
    position: relative;
}

.cta-container {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    border-radius: var(--radius-2xl);
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    inset: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
}

.cta-gradient {
    position: absolute;
    top: 0;
    right: 0;
    width: 60%;
    height: 100%;
    background: radial-gradient(ellipse at top right, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
}

.cta-content {
    position: relative;
    padding: 80px var(--space-16);
    text-align: center;
}

.cta-title {
    font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-4xl));
    font-weight: var(--font-weight-bold);
    letter-spacing: -1px;
    margin-bottom: var(--space-4);
}

.cta-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cta-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

/* =====================================================
   Footer
   ===================================================== */

.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-16) var(--space-6) 0;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-12);
    padding-bottom: var(--space-12);
}

.footer-brand {
    max-width: 280px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.footer-tagline {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    line-height: var(--line-height-normal);
}

.footer-links {
    display: flex;
    gap: var(--space-16);
    flex-wrap: wrap;
}

.footer-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-heading {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-1);
}

.footer-link {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition-normal);
}

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

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: var(--space-6) 0;
    text-align: center;
}

.footer-bottom p {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* =====================================================
   Responsive
   ===================================================== */

@media (max-width: 768px) {
    .nav-links,
    .nav-actions {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .mobile-nav {
        display: flex;
    }

    .hero {
        padding: 100px var(--space-5) var(--space-16);
        min-height: auto;
    }

    .hero-title {
        letter-spacing: -1px;
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

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

    .hero-stats {
        gap: var(--space-6);
    }

    .stat-divider {
        display: none;
    }

    .features {
        padding: var(--space-16) 0;
    }

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

    .how-it-works {
        padding: var(--space-16) 0;
    }

    .steps {
        flex-direction: column;
        align-items: center;
        gap: var(--space-8);
    }

    .step-connector {
        width: 2px;
        height: 40px;
        background: linear-gradient(180deg, var(--border-color) 0%, var(--accent-primary) 50%, var(--border-color) 100%);
        margin: 0;
    }

    .pricing {
        padding: var(--space-16) 0;
    }

    .pricing-card {
        padding: var(--space-10) var(--space-6);
        margin: 0 var(--space-4);
    }

    .pricing-value {
        font-size: 56px;
    }

    .pricing-promise {
        gap: var(--space-6);
        flex-direction: column;
        align-items: center;
    }

    .who-its-for {
        padding: var(--space-16) 0;
    }

    .use-cases-grid {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
        gap: var(--space-4);
    }

    .use-case-card {
        padding: var(--space-6);
    }

    .use-case-icon {
        font-size: var(--space-10);
    }

    .cta {
        padding: var(--space-16) var(--space-4);
    }

    .cta-content {
        padding: var(--space-12) var(--space-6);
    }

    .footer-container {
        flex-direction: column;
        gap: var(--space-8);
    }

    .footer-links {
        gap: var(--space-8);
    }
}

@media (max-width: 480px) {
    .hero-badge {
        font-size: var(--font-size-xs);
        padding: var(--space-1) var(--space-3);
    }

    .feature-card {
        padding: var(--space-6);
    }

    .step {
        min-width: auto;
        padding: 0 var(--space-4);
    }
}