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

:root {
    /* Colors - Trading Grade */
    --bg-primary: #0a0e17;
    --bg-secondary: #12161f;
    --bg-tertiary: #1a1f2e;
    --bg-card: #161b26;
    
    --text-primary: #e8eaed;
    --text-secondary: #a8adb7;
    --text-tertiary: #6e7681;
    
    --accent-primary: #2a7fff;
    --accent-secondary: #1e5fd6;
    --accent-green: #0ecb81;
    --accent-red: #f6465d;
    
    --border-color: #262c3a;
    --border-hover: #353d4f;
    
    /* Typography */
    --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Consolas', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-base);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ==========================================
   NAVIGATION BAR
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 23, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(10, 14, 23, 0.98);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.01em;
    transition: color 0.3s ease;
}

.nav-brand:hover {
    color: var(--accent-primary);
}

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width 0.3s ease;
}

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

.nav-link:hover::after {
    width: 100%;
}

.nav-link.active {
    color: var(--accent-primary);
}

.nav-link.active::after {
    width: 100%;
}

.nav-link-download {
    background: var(--accent-primary);
    color: #ffffff;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    font-weight: 600;
}

.nav-link-download::after {
    display: none;
}

.nav-link-download:hover {
    background: var(--accent-secondary);
    color: #ffffff;
    transform: translateY(-2px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ==========================================
   FLOATING DOWNLOAD BUTTON
   ========================================== */
.float-download {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    opacity: 0;
    transform: translateY(100px);
    transition: all 0.3s ease;
}

.float-download.visible {
    opacity: 1;
    transform: translateY(0);
}

.float-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--accent-primary);
    color: #ffffff;
    border-radius: 50%;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(42, 127, 255, 0.4);
    transition: all 0.3s ease;
}

.float-btn:hover {
    background: var(--accent-secondary);
    transform: scale(1.1) rotate(15deg);
    box-shadow: 0 6px 30px rgba(42, 127, 255, 0.6);
}

.float-btn svg {
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #0a0e17 0%, #12161f 50%, #1a1f2e 100%);
    position: relative;
    overflow: hidden;
    padding: var(--spacing-3xl) 0;
    padding-top: calc(var(--spacing-3xl) + 70px); /* Add navbar height */
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(42, 127, 255, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: fadeInUp 1s ease-out;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, #ffffff 0%, #a8adb7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.hero-tagline {
    font-size: 1.125rem;
    color: var(--accent-primary);
    margin-bottom: var(--spacing-xl);
    font-weight: 500;
    letter-spacing: 0.02em;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn {
    padding: 1rem 2rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    display: inline-block;
    letter-spacing: 0.01em;
}

.btn-primary {
    background: var(--accent-primary);
    color: #ffffff;
}

.btn-primary:hover {
    background: var(--accent-secondary);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(42, 127, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-2px);
}

.btn-download {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    width: 100%;
    text-align: center;
    border: 1px solid var(--border-color);
}

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

/* ==========================================
   DEPTH CARD (Hero Visual)
   ========================================== */
.hero-visual {
    animation: fadeInRight 1s ease-out 0.3s both;
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.depth-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-lg);
    backdrop-filter: blur(10px);
}

.depth-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.depth-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.depth-status {
    font-size: 0.75rem;
    color: var(--accent-green);
    background: rgba(14, 203, 129, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-weight: 600;
}

.depth-content {
    font-family: var(--font-mono);
}

.depth-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    font-size: 0.95rem;
}

.depth-row.ask {
    color: var(--accent-red);
}

.depth-row.bid {
    color: var(--accent-green);
}

.depth-spread {
    text-align: center;
    padding: var(--spacing-sm) 0;
    margin: var(--spacing-sm) 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

/* ==========================================
   SECTIONS
   ========================================== */
.platform-section,
.capabilities-section,
.users-section,
.download-section,
.disclaimer-section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    letter-spacing: -0.01em;
}

/* ==========================================
   PLATFORM SECTION
   ========================================== */
.platform-section {
    background: var(--bg-secondary);
}

.platform-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.platform-content p {
    margin-bottom: var(--spacing-md);
}

.platform-content p:last-child {
    margin-bottom: 0;
}

/* ==========================================
   CAPABILITIES SECTION
   ========================================== */
.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.capability-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
}

.capability-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.capability-icon {
    color: var(--accent-primary);
    margin-bottom: var(--spacing-md);
    width: 48px;
    height: 48px;
}

.capability-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.capability-list {
    list-style: none;
    color: var(--text-secondary);
}

.capability-list li {
    padding-left: 1.5rem;
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.capability-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: 700;
}

/* ==========================================
   USERS SECTION
   ========================================== */
.users-section {
    background: var(--bg-secondary);
}

.users-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    max-width: 900px;
    margin: 0 auto;
}

.user-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-lg);
    text-align: center;
    transition: all 0.3s ease;
}

.user-card:hover {
    border-color: var(--accent-green);
    transform: translateY(-4px);
}

.user-check {
    width: 48px;
    height: 48px;
    background: rgba(14, 203, 129, 0.1);
    color: var(--accent-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 1.5rem;
    font-weight: 700;
}

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

/* ==========================================
   DOWNLOAD SECTION
   ========================================== */
.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    max-width: 800px;
    margin: 0 auto;
}

.download-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-xl);
    text-align: center;
    transition: all 0.3s ease;
}

.download-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.download-icon {
    color: var(--accent-primary);
    margin-bottom: var(--spacing-md);
}

.download-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.download-desc {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ==========================================
   DISCLAIMER SECTION
   ========================================== */
.disclaimer-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.disclaimer-content {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-xl);
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.disclaimer-content p {
    margin-bottom: var(--spacing-md);
}

.disclaimer-content p:last-child {
    margin-bottom: 0;
}

.disclaimer-content strong {
    color: var(--accent-red);
    font-weight: 600;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0;
}

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

.footer-brand {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.footer-text {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}

.footer-copy {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.3s ease;
}

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

/* ==========================================
   RESPONSIVE
   ========================================== */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-link {
        width: 100%;
        text-align: center;
        padding: 0.8rem 0;
    }
    
    .nav-link-download {
        display: block;
        width: 100%;
        text-align: center;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 640px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
        --spacing-3xl: 4rem;
    }
    
    .float-download {
        bottom: 20px;
        right: 20px;
    }
    
    .float-btn {
        width: 50px;
        height: 50px;
    }
    
    .hero {
        padding: var(--spacing-2xl) 0;
        padding-top: calc(var(--spacing-2xl) + 70px);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-tagline {
        font-size: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .capabilities-grid,
    .users-grid,
    .download-grid {
        grid-template-columns: 1fr;
    }
    
    .platform-content,
    .disclaimer-content {
        font-size: 1rem;
    }
}

/* ==========================================
   SCROLL ANIMATIONS
   ========================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================
   UTILITY
   ========================================== */
.text-gradient {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}