/* ============================================
   AliasGo Landing Page - Modern CSS
   Diseño minimalista, mobile-first, profesional
   ============================================ */

/* CSS Custom Properties - Design Tokens */
:root {
    /* Colores principales basados en el logo AliasGo */
    --color-primary: #09C6FC;
    --color-primary-dark: #0AA8D8;
    --color-primary-light: #4DD4FF;

    /* Colores secundarios */
    --color-accent: #FF9A14;
    --color-success: #59FFA2;
    --color-error: #FF5F5F;

    /* Neutros */
    --color-white: #FFFFFF;
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    --color-black: #0A0A0A;

    /* Tipografía */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;

    /* Espaciado */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

    /* Transiciones */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-5);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-8);
    }
}

/* ============================================
   Navigation
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-gray-100);
    transition: var(--transition-base);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 64px;
    padding: var(--space-2) var(--space-5);
    max-width: 1200px;
    margin: 0 auto;
}

@media (min-width: 480px) {
    .nav-container {
        height: 64px;
        padding: 0 var(--space-5);
    }
}

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

.logo-img {
    height: 32px;
    width: auto;
}

.nav-actions {
    display: flex;
    flex-direction: column-reverse;
    align-items: flex-end;
    gap: var(--space-1);
}

@media (min-width: 480px) {
    .nav-actions {
        flex-direction: row;
        align-items: center;
        gap: var(--space-3);
    }
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-600);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-gray-900);
    background: var(--color-gray-50);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-family: var(--font-family);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-sm {
    font-size: var(--font-size-xs);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
}

@media (min-width: 480px) {
    .btn-sm {
        font-size: var(--font-size-sm);
        padding: var(--space-2) var(--space-4);
    }
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    box-shadow: 0 4px 14px rgba(9, 198, 252, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(9, 198, 252, 0.45);
}

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

.btn-ghost {
    background: transparent;
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-200);
}

.btn-ghost:hover {
    background: var(--color-gray-50);
    border-color: var(--color-gray-300);
}

.btn-full {
    width: 100%;
}

/* ============================================
   Badge
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
}

.badge-accent {
    background: rgba(255, 154, 20, 0.1);
    color: var(--color-accent);
    border: 1px solid rgba(255, 154, 20, 0.2);
}

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

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    padding: calc(64px + var(--space-16)) 0 var(--space-16);
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(9, 198, 252, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(89, 255, 162, 0.06) 0%, transparent 50%),
        linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-white) 100%);
    z-index: -1;
}

.hero-grid {
    display: grid;
    gap: var(--space-12);
    align-items: center;
}

@media (min-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-16);
    }
}

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

@media (min-width: 1024px) {
    .hero-content {
        text-align: left;
    }
}

.hero-eyebrow {
    margin-bottom: var(--space-6);
}

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    line-height: 1.1;
    color: var(--color-gray-900);
    margin-bottom: var(--space-6);
    letter-spacing: -0.02em;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: var(--font-size-5xl);
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: var(--font-size-6xl);
    }
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 50%, var(--color-success) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    max-width: 540px;
    margin: 0 auto var(--space-8);
    line-height: 1.7;
}

@media (min-width: 1024px) {
    .hero-description {
        margin: 0 0 var(--space-8);
    }
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-bottom: var(--space-10);
}

@media (min-width: 480px) {
    .hero-cta {
        flex-direction: row;
        justify-content: center;
    }
}

@media (min-width: 1024px) {
    .hero-cta {
        justify-content: flex-start;
    }
}

.hero-trust {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
}

@media (min-width: 480px) {
    .hero-trust {
        flex-direction: row;
    }
}

@media (min-width: 1024px) {
    .hero-trust {
        justify-content: flex-start;
    }
}

.trust-avatars {
    display: flex;
}

.trust-avatars .avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-gray-200) 0%, var(--color-gray-300) 100%);
    border: 2px solid var(--color-white);
    margin-left: -10px;
}

.trust-avatars .avatar:first-child {
    margin-left: 0;
}

.trust-text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.trust-text strong {
    color: var(--color-gray-700);
}

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

.phone-frame {
    position: relative;
    width: 280px;
    height: 560px;
    background: linear-gradient(145deg, var(--color-gray-800), var(--color-gray-900));
    border-radius: 40px;
    padding: 12px;
    box-shadow:
        0 50px 100px -20px rgba(0, 0, 0, 0.25),
        0 30px 60px -30px rgba(0, 0, 0, 0.3),
        inset 0 1px 1px rgba(255, 255, 255, 0.1);
}

.phone-notch {
    position: absolute;
    top: 18px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 28px;
    background: var(--color-black);
    border-radius: 20px;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, #09C6FC 0%, #0AA8D8 100%);
    border-radius: 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-6);
    padding: var(--space-8);
}

.demo-qr {
    width: 140px;
    height: 140px;
    background: var(--color-white);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
}

.demo-qr-img {
    width: 100px;
    height: 100px;
    object-fit: contain;
}

.demo-alias {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
}

.demo-label {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.demo-value {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.15);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
}

.demo-success {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-white);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.demo-success svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   Logos Section
   ============================================ */
.logos-section {
    padding: var(--space-12) 0;
    background: var(--color-gray-50);
    border-top: 1px solid var(--color-gray-100);
    border-bottom: 1px solid var(--color-gray-100);
}

.logos-title {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-8);
}

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

.logo-partner {
    height: 32px;
    width: auto;
    filter: grayscale(100%);
    opacity: 0.5;
    transition: all var(--transition-base);
}

.logo-partner:hover {
    filter: grayscale(0%);
    opacity: 1;
}

@media (min-width: 768px) {
    .logos-grid {
        gap: var(--space-12);
    }

    .logo-partner {
        height: 40px;
    }
}

/* ============================================
   Problem/Solution Section
   ============================================ */
.problem-section {
    padding: var(--space-20) 0;
}

.problem-grid {
    display: grid;
    gap: var(--space-6);
}

@media (min-width: 768px) {
    .problem-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-8);
    }
}

.problem-card {
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
}

.problem-before {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
}

.problem-after {
    background: linear-gradient(135deg, rgba(9, 198, 252, 0.05) 0%, rgba(89, 255, 162, 0.05) 100%);
    border: 1px solid rgba(9, 198, 252, 0.2);
}

.problem-label {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-4);
}

.problem-before .problem-label {
    color: var(--color-gray-400);
}

.problem-after .problem-label {
    color: var(--color-primary);
}

.problem-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--space-6);
}

.problem-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.problem-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
}

.problem-list svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 2px;
}

.icon-negative {
    color: var(--color-error);
}

.icon-positive {
    color: var(--color-success);
}

/* ============================================
   Steps Section
   ============================================ */
.steps-section {
    padding: var(--space-20) 0;
    background: var(--color-gray-50);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-gray-900);
    margin-bottom: var(--space-3);
    letter-spacing: -0.02em;
}

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

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-gray-500);
}

.steps-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    max-width: 900px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .steps-grid {
        flex-direction: row;
        align-items: flex-start;
    }
}

.step-card {
    flex: 1;
    background: var(--color-white);
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.step-number {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    font-size: var(--font-size-xl);
    font-weight: 700;
    border-radius: var(--radius-lg);
    margin: 0 auto var(--space-5);
}

.step-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--space-3);
}

.step-content p {
    font-size: var(--font-size-base);
    color: var(--color-gray-500);
    line-height: 1.6;
}

.step-connector {
    display: none;
}

@media (min-width: 768px) {
    .step-connector {
        display: block;
        width: 60px;
        height: 2px;
        background: var(--color-gray-200);
        margin-top: 72px;
        flex-shrink: 0;
    }
}

.steps-cta {
    text-align: center;
    margin-top: var(--space-12);
}

/* ============================================
   Features Section
   ============================================ */
.features-section {
    padding: var(--space-20) 0;
}

.features-grid {
    display: grid;
    gap: var(--space-6);
}

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

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

.feature-card {
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
    transition: all var(--transition-base);
}

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

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(9, 198, 252, 0.1) 0%, rgba(9, 198, 252, 0.05) 100%);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-5);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.feature-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--space-3);
}

.feature-card p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    line-height: 1.6;
}

/* ============================================
   Use Cases Section
   ============================================ */
.usecases-section {
    padding: var(--space-20) 0;
    background: var(--color-gray-900);
}

.usecases-section .section-title {
    color: var(--color-white);
}

.usecases-grid {
    display: grid;
    gap: var(--space-5);
}

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

@media (min-width: 1024px) {
    .usecases-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.usecase-card {
    padding: var(--space-6);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.usecase-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--color-primary);
}

.usecase-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--space-3);
}

.usecase-card p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    line-height: 1.6;
}

/* ============================================
   Testimonials Section
   ============================================ */
.testimonials-section {
    padding: var(--space-20) 0;
}

.testimonials-grid {
    display: grid;
    gap: var(--space-6);
}

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

.testimonial-card {
    padding: var(--space-8);
    background: var(--color-gray-50);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--color-gray-100);
}

.testimonial-text {
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
    line-height: 1.7;
    margin-bottom: var(--space-6);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

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

.author-info cite {
    font-style: normal;
    font-weight: 600;
    color: var(--color-gray-900);
}

.author-info span {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* ============================================
   Pricing Section
   ============================================ */
.pricing-section {
    padding: var(--space-20) 0;
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray-50) 100%);
}

.pricing-card {
    max-width: 480px;
    margin: 0 auto;
    padding: var(--space-10);
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    border: 1px solid var(--color-gray-100);
    text-align: center;
}

.pricing-header {
    margin-bottom: var(--space-8);
}

.pricing-badge {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    background: rgba(9, 198, 252, 0.1);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
}

.pricing-title {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--color-gray-900);
    margin-bottom: var(--space-3);
}

.pricing-description {
    font-size: var(--font-size-base);
    color: var(--color-gray-500);
}

.pricing-counter {
    margin-bottom: var(--space-8);
    padding: var(--space-6);
    background: var(--color-gray-50);
    border-radius: var(--radius-xl);
}

.counter-display {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.counter-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--color-accent);
}

.counter-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.counter-bar {
    height: 8px;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.counter-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-success) 100%);
    border-radius: var(--radius-full);
    transition: width 1s ease-out;
}

.pricing-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
    text-align: left;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
}

.pricing-features svg {
    width: 20px;
    height: 20px;
    color: var(--color-success);
}

.pricing-note {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    margin-top: var(--space-4);
}

/* ============================================
   FAQ Section
   ============================================ */
.faq-section {
    padding: var(--space-20) 0;
}

.faq-list {
    max-width: 720px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.faq-item {
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item[open] {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5) var(--space-6);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-gray-900);
    cursor: pointer;
    list-style: none;
}

.faq-question::-webkit-details-marker {
    display: none;
}

.faq-question::after {
    content: '+';
    font-size: var(--font-size-xl);
    color: var(--color-gray-400);
    transition: transform var(--transition-base);
}

.faq-item[open] .faq-question::after {
    content: '−';
    color: var(--color-primary);
}

.faq-answer {
    padding: 0 var(--space-6) var(--space-6);
}

.faq-answer p {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
    padding: var(--space-20) 0;
    background: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-black) 100%);
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.cta-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: var(--space-4);
    letter-spacing: -0.02em;
}

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

.cta-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-400);
    margin-bottom: var(--space-10);
}

.cta-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

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

@media (min-width: 480px) {
    .form-row {
        flex-direction: row;
    }
}

.form-input {
    flex: 1;
    padding: var(--space-4) var(--space-5);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    outline: none;
    transition: all var(--transition-fast);
}

.form-input::placeholder {
    color: var(--color-gray-500);
}

.form-input:focus {
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.15);
}

.form-note {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: var(--space-16) 0 var(--space-8);
    background: var(--color-black);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
    display: grid;
    gap: var(--space-10);
    margin-bottom: var(--space-12);
}

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

.footer-brand {
    max-width: 250px;
}

.footer-logo {
    height: 28px;
    width: auto;
    margin-bottom: var(--space-4);
    filter: brightness(0) invert(1);
}

.footer-tagline {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.footer-links h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links a {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    padding: var(--space-2) 0;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-white);
}

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content {
    animation: fadeInUp 0.6s ease-out;
}

.hero-visual {
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

/* Scroll animations */
@media (prefers-reduced-motion: no-preference) {

    .step-card,
    .feature-card,
    .usecase-card,
    .testimonial-card {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.5s ease, transform 0.5s ease;
    }

    .step-card.visible,
    .feature-card.visible,
    .usecase-card.visible,
    .testimonial-card.visible {
        opacity: 1;
        transform: translateY(0);
    }
}