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

:root {
    --black: #000000;
    --dark-gray: #1a1a1a;
    --medium-gray: #2a2a2a;
    --light-gray: #888888;
    --white: #ffffff;
    --green: #4CAF50;
    --blue: #3b82f6;
    --red: #ff3b30;
    --border-color: #333333;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--black);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(180deg, var(--black) 0%, var(--dark-gray) 100%);
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(76, 175, 80, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(3rem, 10vw, 8rem);
    font-weight: 900;
    letter-spacing: -0.05em;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--white) 0%, var(--light-gray) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
}

.hero-subtitle {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--green);
    margin-bottom: 30px;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--light-gray);
    max-width: 700px;
    margin: 0 auto 50px;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 18px 40px;
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn-primary {
    background: linear-gradient(135deg, var(--green) 0%, #45a049 100%);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(76, 175, 80, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(76, 175, 80, 0.5);
}

.btn-secondary {
    background: var(--medium-gray);
    color: var(--white);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--dark-gray);
    border-color: var(--green);
    transform: translateY(-2px);
}

/* Problem Section */
.problem {
    padding: 100px 20px;
    background: var(--dark-gray);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    text-align: center;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.section-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--light-gray);
    text-align: center;
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.problem-card {
    background: var(--medium-gray);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    transition: all 0.3s ease;
}

.problem-card:hover {
    transform: translateY(-5px);
    border-color: var(--red);
    box-shadow: 0 10px 40px rgba(255, 59, 48, 0.2);
}

.problem-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.problem-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--white);
}

.problem-card p {
    color: var(--light-gray);
    line-height: 1.8;
}

/* Features Section */
.features {
    padding: 100px 20px;
    background: var(--black);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.feature-card {
    background: var(--dark-gray);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--green) 0%, var(--blue) 100%);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.feature-card:hover::before {
    transform: scaleY(1);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--green);
    box-shadow: 0 10px 40px rgba(76, 175, 80, 0.2);
}

.feature-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--medium-gray);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.75rem;
    margin-bottom: 15px;
    color: var(--white);
}

.feature-card p {
    color: var(--light-gray);
    line-height: 1.8;
}

/* Pricing Section */
.pricing {
    padding: 100px 20px;
    background: var(--dark-gray);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.pricing-card {
    background: var(--medium-gray);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-10px);
    border-color: var(--green);
    box-shadow: 0 15px 50px rgba(76, 175, 80, 0.2);
}

.pricing-card-highlight {
    border-color: var(--green);
    background: linear-gradient(180deg, var(--medium-gray) 0%, var(--dark-gray) 100%);
    border-width: 3px;
}

.plan-badge {
    display: inline-block;
    background: var(--green);
    color: var(--black);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 20px;
}

.plan-name {
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: 20px;
}

.plan-price {
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--green);
    margin-bottom: 30px;
}

.plan-price span {
    font-size: 1.25rem;
    color: var(--light-gray);
    font-weight: 600;
}

.plan-features {
    list-style: none;
    text-align: left;
}

.plan-features li {
    padding: 12px 0;
    color: var(--light-gray);
    border-bottom: 1px solid var(--border-color);
    position: relative;
    padding-left: 30px;
}

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

.plan-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--green);
    font-weight: 900;
    font-size: 1.25rem;
}

/* Download Section */
.download {
    padding: 100px 20px;
    background: var(--black);
    text-align: center;
}

.download-subtitle {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    color: var(--light-gray);
    margin-bottom: 60px;
}

.download-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 15px;
    background: var(--dark-gray);
    border: 2px solid var(--border-color);
    padding: 20px 40px;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s ease;
    min-width: 220px;
}

.download-btn:hover {
    background: var(--medium-gray);
    border-color: var(--green);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(76, 175, 80, 0.2);
}

.btn-icon {
    font-size: 3rem;
}

.btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}

.btn-small {
    font-size: 0.75rem;
    color: var(--light-gray);
    text-transform: uppercase;
}

.btn-large {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--white);
}

.download-note {
    font-size: 1.125rem;
    color: var(--light-gray);
    font-style: italic;
    line-height: 1.8;
}

/* Footer */
.footer {
    background: var(--dark-gray);
    border-top: 1px solid var(--border-color);
    padding: 60px 20px 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 2rem;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.footer-brand p {
    color: var(--light-gray);
}

.footer-links h4,
.footer-social h4 {
    margin-bottom: 20px;
    color: var(--white);
    text-transform: uppercase;
    font-size: 1rem;
    letter-spacing: 0.1em;
}

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

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--light-gray);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 50px;
    height: 50px;
    background: var(--medium-gray);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--green);
    color: var(--black);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    color: var(--light-gray);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        min-height: 80vh;
        padding: 40px 20px;
    }

    .hero-title {
        font-size: clamp(2.5rem, 12vw, 4rem);
    }

    .hero-subtitle {
        font-size: clamp(1.25rem, 5vw, 1.75rem);
    }

    .hero-description {
        font-size: 1rem;
        margin-bottom: 40px;
    }

    .section-title {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
    }

    .problem,
    .features,
    .pricing,
    .download {
        padding: 60px 20px;
    }

    .problem-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .problem-card {
        padding: 30px 20px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .feature-card {
        padding: 30px 20px;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .pricing-card {
        padding: 30px 20px;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }

    .btn {
        width: 100%;
        max-width: 300px;
        padding: 15px 30px;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }

    .download-btn {
        width: 100%;
        max-width: 300px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }

    .footer-links ul {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .social-links {
        justify-content: center;
    }
}

/* Extra small devices (phones in portrait) */
@media (max-width: 480px) {
    .hero {
        padding: 30px 15px;
    }

    .container {
        padding: 0 15px;
    }

    .problem,
    .features,
    .pricing,
    .download {
        padding: 40px 15px;
    }

    .problem-card,
    .feature-card,
    .pricing-card {
        padding: 25px 15px;
    }

    .problem-icon {
        font-size: 3rem;
    }

    .feature-number {
        font-size: 2rem;
    }

    .plan-price {
        font-size: 2.5rem;
    }

    .btn-icon {
        font-size: 2.5rem;
    }

    .download-btn {
        padding: 15px 25px;
    }
}

/* Landscape mobile devices */
@media (max-width: 896px) and (orientation: landscape) {
    .hero {
        min-height: 100vh;
        padding: 60px 20px;
    }
}

/* Tablet specific */
@media (min-width: 769px) and (max-width: 1024px) {
    .problem-grid,
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 600px;
        margin: 0 auto;
    }
}

/* Touch-friendly improvements for mobile */
@media (hover: none) and (pointer: coarse) {
    .btn,
    .download-btn,
    .social-links a {
        min-height: 44px;
        min-width: 44px;
    }

    .btn {
        padding: 16px 40px;
    }

    /* Disable hover effects on touch devices */
    .btn:hover,
    .download-btn:hover,
    .problem-card:hover,
    .feature-card:hover,
    .pricing-card:hover {
        transform: none;
    }

    /* Add active states for touch feedback */
    .btn:active,
    .download-btn:active {
        transform: scale(0.98);
        opacity: 0.9;
    }

    .social-links a:active {
        transform: scale(0.95);
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content > * {
    animation: fadeInUp 0.8s ease-out backwards;
}

.hero-title {
    animation-delay: 0.1s;
}

.hero-subtitle {
    animation-delay: 0.2s;
}

.hero-description {
    animation-delay: 0.3s;
}

.cta-buttons {
    animation-delay: 0.4s;
}