/* ===========================
   CSS Variables & Reset
   =========================== */

:root {
    --color-primary: #ff6b00;
    --color-primary-light: #ff9500;
    --color-primary-dark: #cc5500;
    --color-bg-dark: #0a0a0a;
    --color-bg-darker: #050505;
    --color-bg-card: #141414;
    --color-text-primary: #ffffff;
    --color-text-secondary: #b0b0b0;
    --color-text-muted: #666666;
    --color-border: rgba(255, 107, 0, 0.2);
    --color-border-hover: rgba(255, 107, 0, 0.5);

    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 40px;
    --spacing-xl: 60px;
    --spacing-xxl: 100px;

    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 50px;

    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.5);
    --shadow-orange: 0 0 30px rgba(255, 107, 0, 0.3);
    --shadow-orange-hover: 0 10px 40px rgba(255, 107, 0, 0.5);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--color-bg-dark);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

/* ===========================
   Layout & Container
   =========================== */

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===========================
   Header
   =========================== */

.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.logo .accent {
    color: var(--color-primary);
}

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

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-bg-dark);
    font-weight: 700;
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-orange);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-orange-hover);
}

.btn-primary:active {
    transform: translateY(-1px);
}

.btn-small {
    padding: 12px 24px;
    font-size: 0.95rem;
}

.btn-large {
    padding: 20px 48px;
    font-size: 1.1rem;
}

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

.hero {
    padding: var(--spacing-xxl) 0 var(--spacing-xl) 0;
    text-align: center;
    background: radial-gradient(ellipse at center, rgba(255, 107, 0, 0.05) 0%, transparent 70%);
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    letter-spacing: -2px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.hero-note,
.cta-note {
    margin-top: 10px;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* ===========================
   Demo Section
   =========================== */

.demo-section {
    padding: var(--spacing-xl) 0;
}

.demo-image-wrapper {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    background: var(--color-bg-card);
}

.demo-image {
    width: 100%;
    height: auto;
    display: block;
}

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

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

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
}

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

.features {
    padding: var(--spacing-xxl) 0;
    background: rgba(255, 107, 0, 0.02);
}

.features-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xxl);
}

.feature-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.feature-card-reverse {
    direction: rtl;
}

.feature-card-reverse > * {
    direction: ltr;
}

.feature-image {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border);
    background: var(--color-bg-card);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    align-self: center;
    width: fit-content; /* shrinks to image size */
}
.feature-card:hover .feature-image {
    transform: translateY(-5px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-orange);
}

.feature-content {
    padding: var(--spacing-md);
}

.feature-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: 1rem;
}

.feature-list li:before {
    content: "→";
    color: var(--color-primary);
    font-weight: bold;
    font-size: 1.2rem;
}

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

.features-list {
    padding: var(--spacing-xxl) 0;
}

.features-list-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.feature-item {
    background: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.feature-item:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-orange);
}

.feature-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 107, 0, 0.1);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.feature-item h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.feature-item p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

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

.cta-section {
    padding: var(--spacing-xxl) 0;
    background: radial-gradient(ellipse at center, rgba(255, 107, 0, 0.08) 0%, transparent 70%);
}

.cta-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-subtitle {
    font-size: 1.3rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

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

.footer {
    padding: var(--spacing-xl) 0 var(--spacing-lg) 0;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-darker);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-brand .logo {
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.footer-links {
    display: contents;
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-column h4 {
    color: var(--color-primary);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.footer-column a {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 107, 0, 0.1);
}

.footer-bottom p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* ===========================
   Animations
   =========================== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero,
.demo-section,
.feature-card,
.feature-item {
    animation: fadeIn 0.8s ease-out;
}

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

@media (max-width: 1200px) {
    .features-grid {
        gap: var(--spacing-xl);
    }
}

@media (max-width: 992px) {
    .feature-card,
    .feature-card-reverse {
        grid-template-columns: 1fr;
        direction: ltr;
    }

    .feature-card-reverse > * {
        direction: ltr;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-lg);
    }

    .footer-brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero {
        padding: var(--spacing-xl) 0;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .btn-large {
        padding: 18px 36px;
        font-size: 1rem;
    }

    .demo-section {
        padding: var(--spacing-lg) 0;
    }

    .features {
        padding: var(--spacing-xl) 0;
    }

    .features-grid {
        gap: var(--spacing-xl);
    }

    .feature-title {
        font-size: 1.5rem;
    }

    .feature-description {
        font-size: 1rem;
    }

    .features-list {
        padding: var(--spacing-xl) 0;
    }

    .features-list-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .cta-section {
        padding: var(--spacing-xl) 0;
    }

    .cta-title {
        font-size: 2rem;
    }

    .cta-subtitle {
        font-size: 1.1rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .footer-brand {
        grid-column: 1;
    }
}

@media (max-width: 480px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }

    .hero-title {
        font-size: 2rem;
    }

    .btn-primary {
        padding: 14px 28px;
    }

    .btn-small {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .feature-content {
        padding: 0;
    }
}

/* ===========================
   Utility Classes
   =========================== */

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

.text-orange {
    color: var(--color-primary);
}

.bg-dark {
    background: var(--color-bg-dark);
}

.bg-darker {
    background: var(--color-bg-darker);
}

/* ===========================
   Performance & Accessibility
   =========================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for accessibility */
button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 4px;
}

/* Smooth scrolling for anchor links */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}