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

:root {
    /* Color Palette */
    --primary-color: #2196F3;
    --primary-dark: #1976D2;
    --primary-light: #BBDEFB;
    --secondary-color: #9C27B0;
    --accent-color: #4CAF50;
    --text-dark: #1a1a1a;
    --text-medium: #333;
    --text-light: #666;
    --text-lighter: #999;
    --bg-white: #ffffff;
    --bg-gray: #f5f5f5;
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.2);

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 600;
    --font-weight-bold: 700;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

body {
    font-family: var(--font-primary);
    color: var(--text-medium);
    line-height: 1.6;
    background-color: var(--bg-gray);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===================================
   NAVIGATION
   =================================== */
.navbar {
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

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

.logo {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-size: 24px;
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
}

.by-uhadi {
    font-size: 11px;
    color: var(--text-lighter);
    margin-top: -4px;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-medium);
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

.nav-links a:hover {
    color: var(--primary-color);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 3px;
    background: var(--text-medium);
    border-radius: 2px;
    transition: var(--transition-fast);
}

.mobile-menu {
    display: none;
    background: var(--bg-white);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-sm);
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: var(--spacing-sm);
}

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

.mobile-menu a {
    text-decoration: none;
    color: var(--text-medium);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.mobile-menu a:hover {
    background: var(--bg-gray);
}

/* ===================================
   BUTTONS
   =================================== */
.btn-primary {
    background: var(--primary-color);
    color: var(--bg-white);
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    display: inline-block;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    padding: 12px 24px;
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    display: inline-block;
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--bg-white);
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--bg-white);
    padding: var(--spacing-2xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><rect width="100" height="100" fill="rgba(255,255,255,0.05)"/></svg>');
    opacity: 0.1;
}

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

.hero-title {
    font-size: 48px;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(90deg, #fff 0%, #a8edea 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 24px;
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
    min-height: 36px;
    font-weight: var(--font-weight-medium);
}

.rotating-text {
    animation: fadeIn var(--transition-normal);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 0.95; transform: translateY(0); }
}

.hero-description {
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    opacity: 0.9;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.hero-badges {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.badge {
    background: rgba(255, 255, 255, 0.2);
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-size: 14px;
    backdrop-filter: blur(10px);
}

/* ===================================
   SECTIONS
   =================================== */
section {
    padding: var(--spacing-2xl) 0;
}

.section-title {
    font-size: 36px;
    font-weight: var(--font-weight-bold);
    text-align: center;
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 18px;
    text-align: center;
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
}

/* ===================================
   DEMO VIDEO SECTION
   =================================== */
.demo-video {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-gray);
}

.video-container {
    position: relative;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: var(--radius-lg);
}

/* ===================================
   FEATURES SECTION
   =================================== */
.features {
    background: var(--bg-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.feature-card {
    background: var(--bg-gray);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: var(--spacing-xs);
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* ===================================
   LANGUAGES SECTION
   =================================== */
.languages {
    background: var(--bg-gray);
}

.languages-showcase {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: 0;
}

.language-category {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.language-category h3 {
    font-size: 20px;
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

.language-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.language-tag {
    background: var(--primary-light);
    color: var(--primary-dark);
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: var(--font-weight-medium);
}

.more-languages {
    background: var(--secondary-color);
    color: var(--bg-white);
}

.tech-stack {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--bg-white);
    border-radius: var(--radius-lg);
}

.tech-label {
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.tech-logos {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.tech-logo {
    background: var(--bg-gray);
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-medium);
    font-size: 14px;
}

/* ===================================
   PRICING SECTION
   =================================== */
.pricing {
    background: var(--bg-white);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    max-width: 1000px;
    margin: 0 auto var(--spacing-lg);
}

.pricing-card {
    background: var(--bg-gray);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 2px solid var(--border-color);
    transition: all var(--transition-normal);
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

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

.recommended-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    background: var(--primary-color);
    color: var(--bg-white);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: var(--font-weight-bold);
}

.pricing-header h3 {
    font-size: 24px;
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

.price {
    display: flex;
    align-items: baseline;
    margin-bottom: var(--spacing-md);
}

.currency {
    font-size: 24px;
    color: var(--text-light);
    margin-right: 4px;
}

.amount {
    font-size: 48px;
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
}

.period {
    font-size: 16px;
    color: var(--text-light);
    margin-left: 4px;
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.pricing-features li {
    padding: var(--spacing-xs) 0;
    color: var(--text-medium);
    line-height: 1.6;
}

.btn-pricing {
    width: 100%;
    text-align: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    display: block;
    transition: all var(--transition-fast);
}

.btn-pricing:hover {
    background: var(--primary-color);
    color: var(--bg-white);
}

.btn-pricing.btn-primary {
    background: var(--primary-color);
    color: var(--bg-white);
    border-color: var(--primary-color);
}

.btn-pricing.btn-primary:hover {
    background: var(--primary-dark);
}

.pricing-note {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-md);
    background: var(--primary-light);
    border-radius: var(--radius-md);
    text-align: center;
}

/* ===================================
   HOW IT WORKS SECTION
   =================================== */
.how-it-works {
    background: var(--bg-gray);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.step-card {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.step-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: var(--font-weight-bold);
    margin: 0 auto var(--spacing-sm);
}

.step-card h3 {
    font-size: 20px;
    margin-bottom: var(--spacing-xs);
    color: var(--text-dark);
}

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

/* ===================================
   DOWNLOAD SECTION
   =================================== */
.download {
    background: var(--bg-white);
    text-align: center;
}

.download-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.btn-download {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--text-dark);
    color: var(--bg-white);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-fast);
    min-width: 200px;
}

.btn-download:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.btn-download.btn-disabled {
    background: var(--text-lighter);
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-download.btn-disabled:hover {
    transform: none;
    box-shadow: none;
}

.download-icon {
    width: 32px;
    height: 32px;
}

.btn-download div {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.download-label {
    font-size: 11px;
    opacity: 0.8;
}

.download-platform {
    font-size: 18px;
    font-weight: var(--font-weight-bold);
}

.guest-mode-cta {
    max-width: 700px;
    margin: var(--spacing-xl) auto 0;
    padding: var(--spacing-md);
    background: var(--primary-light);
    border-radius: var(--radius-md);
}

/* Beta Instructions */
.beta-instructions {
    max-width: 900px;
    margin: var(--spacing-xl) auto;
    padding: var(--spacing-lg);
    background: var(--bg-gray);
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-color);
}

.beta-instructions h3 {
    font-size: 28px;
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
    text-align: center;
}

.beta-intro {
    text-align: center;
    font-size: 16px;
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
}

.beta-steps-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.beta-step {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    padding: var(--spacing-md);
    background: var(--bg-white);
    border-radius: var(--radius-md);
    transition: transform var(--transition-fast);
}

.beta-step:hover {
    transform: translateX(8px);
}

.beta-step-number {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: var(--font-weight-bold);
}

.beta-step-content h4 {
    font-size: 18px;
    margin-bottom: var(--spacing-xs);
    color: var(--text-dark);
}

.beta-step-content p {
    color: var(--text-light);
    line-height: 1.6;
}

.beta-step-content a {
    color: var(--primary-color);
    text-decoration: underline;
    font-weight: var(--font-weight-medium);
}

.beta-note {
    padding: var(--spacing-md);
    background: #FFF3CD;
    border: 2px solid #FFC107;
    border-radius: var(--radius-md);
    text-align: center;
}

.beta-note p {
    color: #856404;
    font-size: 15px;
    margin: 0;
}

/* ===================================
   SIGNUP FORM
   =================================== */
.signup-form {
    background: white;
    padding: 3rem;
    border-radius: 16px;
    margin-top: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.signup-form h3 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary-color);
    font-size: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn-submit {
    width: 100%;
    background: var(--primary-color);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
}

.btn-submit:hover {
    background: var(--accent-color);
    transform: translateY(-2px);
}

.form-note {
    text-align: center;
    margin-top: 1rem;
    color: #666;
    font-size: 14px;
}

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

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    margin-bottom: var(--spacing-sm);
    font-size: 18px;
}

.footer-section a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin-bottom: var(--spacing-xs);
    transition: color var(--transition-fast);
}

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

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.social-links a {
    font-size: 24px;
    display: inline-block;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

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

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-description {
        font-size: 16px;
    }

    .section-title {
        font-size: 28px;
    }

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

    .download-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .btn-download {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn-large {
        padding: 14px 24px;
        font-size: 16px;
    }
}