/* ============================================
   BLACK TEAM TOOLS - Landing Page Styles
   Design: SpaceX-inspired minimal dark theme
   Typography: Inter (Google Fonts)
   ============================================ */

/* === CSS Custom Properties === */
:root {
    /* Colors */
    --color-bg-primary: #000000;
    --color-bg-secondary: #0a0a0a;
    --color-bg-tertiary: #111111;
    --color-bg-card: #0d0d0d;
    --color-bg-card-hover: #141414;
    
    --color-text-primary: #ffffff;
    --color-text-secondary: #a0a0a0;
    --color-text-tertiary: #666666;
    
    --color-accent: #ffffff;
    --color-accent-dim: rgba(255, 255, 255, 0.1);
    
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);
    
    --color-status-live: #00d26a;
    --color-status-upcoming: #666666;
    
    /* Typography Scale (1.25 ratio) */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 2rem;        /* 32px */
    --font-size-4xl: 2.5rem;      /* 40px */
    --font-size-5xl: 3.5rem;      /* 56px */
    --font-size-6xl: 4.5rem;      /* 72px */
    
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    --line-height-tight: 1.1;
    --line-height-snug: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    --letter-spacing-tight: -0.02em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.05em;
    --letter-spacing-wider: 0.1em;
    
    /* Spacing */
    --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;
    --space-32: 8rem;
    
    /* Layout */
    --container-max: 1200px;
    --container-padding: var(--space-6);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
}

/* Topographic background - barely visible terrain texture */
body::before {
    content: '';
    position: fixed;
    top: -300px;
    left: -300px;
    right: -300px;
    bottom: -300px;
    background-image: url('topo-background.jpg');
    background-size: 100%;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.025;
    pointer-events: none;
    z-index: -1;
    filter: sepia(100%) hue-rotate(160deg) saturate(300%) brightness(0.7);
}

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

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

/* === Navigation === */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: var(--space-5) 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0.8) 0%, transparent 100%);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.logo-icon {
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
}

.logo-text {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    letter-spacing: var(--letter-spacing-wider);
    color: var(--color-text-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-links a {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.nav-cta {
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.nav-cta:hover {
    background: var(--color-text-primary);
    color: var(--color-bg-primary) !important;
    border-color: var(--color-text-primary);
}

/* === Hero Section === */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--space-32) var(--container-padding);
    position: relative;
}

.hero-content {
    max-width: 900px;
    text-align: center;
}

.hero-title {
    margin-bottom: var(--space-8);
}

.hero-title-line {
    display: block;
    font-size: var(--font-size-6xl);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
}

.hero-subtitle {
    max-width: 560px;
    margin: 0 auto var(--space-10);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.hero-tagline {
    text-align: center;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    font-style: italic;
    color: var(--color-text-tertiary);
    letter-spacing: var(--letter-spacing-wide);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    letter-spacing: var(--letter-spacing-wide);
    text-transform: uppercase;
    border: 1px solid transparent;
    border-radius: 2px;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-primary {
    background: var(--color-text-primary);
    color: var(--color-bg-primary);
}

.btn-primary:hover {
    background: transparent;
    color: var(--color-text-primary);
    border-color: var(--color-text-primary);
}

.btn-arrow {
    transition: transform var(--transition-fast);
}

.btn:hover .btn-arrow {
    transform: translateX(4px);
}

/* Scroll Indicator */
.hero-scroll-indicator {
    position: absolute;
    bottom: var(--space-10);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-text-tertiary);
    font-size: var(--font-size-xs);
    letter-spacing: var(--letter-spacing-wider);
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-text-tertiary), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* === Section Layout === */
.section-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-32) var(--container-padding);
}

.section-header {
    display: flex;
    align-items: baseline;
    gap: var(--space-6);
    margin-bottom: var(--space-16);
}

.section-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    letter-spacing: var(--letter-spacing-wider);
    color: var(--color-text-tertiary);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-semibold);
    letter-spacing: var(--letter-spacing-tight);
}

/* === Products Section === */
.products {
    background: var(--color-bg-secondary);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: var(--space-6);
}

.product-card {
    display: flex;
    flex-direction: column;
    padding: var(--space-8);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    transition: all var(--transition-base);
}

.product-card-featured {
    cursor: pointer;
}

.product-card-featured:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
}

.product-status {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    letter-spacing: var(--letter-spacing-wide);
    text-transform: uppercase;
    color: var(--color-text-tertiary);
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.status-live {
    background: var(--color-status-live);
    box-shadow: 0 0 8px var(--color-status-live);
}

.status-upcoming {
    background: var(--color-status-upcoming);
}

.product-content {
    flex: 1;
    margin-bottom: var(--space-8);
}

.product-name {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-4);
}

.product-description {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
}

.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border);
}

.product-link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.product-card-featured:hover .product-link {
    color: var(--color-text-primary);
}

.product-arrow {
    font-size: var(--font-size-lg);
    color: var(--color-text-tertiary);
    transition: all var(--transition-fast);
}

.product-card-featured:hover .product-arrow {
    color: var(--color-text-primary);
    transform: translateX(4px);
}

/* === How These Tools Work Section === */
.how-these-tools-work {
    background: var(--color-bg-secondary);
}

.tools-work-content {
    max-width: 900px;
}

.tools-work-intro {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-8);
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

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

.link-arrow span:last-child {
    transition: transform var(--transition-fast);
}

.link-arrow:hover span:last-child {
    transform: translateX(4px);
}

/* === Product Index Section === */
.product-index {
    background: var(--color-bg-primary);
}

.product-index-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-6);
}

.product-index-card {
    display: flex;
    flex-direction: column;
    padding: var(--space-6);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    transition: all var(--transition-base);
    cursor: pointer;
}

.product-index-card:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
}

.product-index-name {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-3);
}

.product-index-description {
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
}

.product-index-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border);
}

.product-index-link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.product-index-card:hover .product-index-link {
    color: var(--color-text-primary);
}

.product-index-arrow {
    font-size: var(--font-size-lg);
    color: var(--color-text-tertiary);
    transition: all var(--transition-fast);
}

.product-index-card:hover .product-index-arrow {
    color: var(--color-text-primary);
    transform: translateX(4px);
}

.amg-expanded {
    grid-column: 1 / -1;
    padding: var(--space-6);
    text-align: center;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background: var(--color-bg-tertiary);
}

/* === Philosophy Section === */
.philosophy {
    background: var(--color-bg-primary);
}

.philosophy-content {
    max-width: 900px;
}

.philosophy-intro {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-16);
    max-width: 800px;
}

.philosophy-pillars {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.pillar {
    padding: var(--space-6);
    border-top: 1px solid var(--color-border);
}

.pillar-number {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    letter-spacing: var(--letter-spacing-wider);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-4);
}

.pillar-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-3);
}

.pillar-text {
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
}

/* === About Section === */
.about {
    background: var(--color-bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-16);
    align-items: start;
}

.about-lead {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-snug);
    margin-bottom: var(--space-6);
}

.about-lead strong {
    font-weight: var(--font-weight-semibold);
}

.about-body {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
}

.about-meta {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    padding: var(--space-6);
    background: var(--color-bg-tertiary);
    border-radius: 4px;
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.meta-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    letter-spacing: var(--letter-spacing-wide);
    text-transform: uppercase;
    color: var(--color-text-tertiary);
}

.meta-value {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

/* === Footer === */
.footer {
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border);
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-10) var(--container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-6);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.footer-company {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    letter-spacing: var(--letter-spacing-wider);
}

.footer-links {
    display: flex;
    gap: var(--space-6);
}

.footer-links a {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.footer-legal {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.footer-tagline {
    font-style: italic;
    color: var(--color-text-tertiary);
    opacity: 0.8;
}

/* === Responsive === */
@media (max-width: 768px) {
    :root {
        --font-size-6xl: 2.5rem;
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
    }
    
    .nav-links a:not(.nav-cta) {
        display: none;
    }
    
    .hero {
        padding: var(--space-24) var(--container-padding);
    }
    
    .section-container {
        padding: var(--space-20) var(--container-padding);
    }
    
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .product-index-grid {
        grid-template-columns: 1fr;
    }
    
    .philosophy-pillars {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .footer-container {
        flex-direction: column;
        text-align: center;
    }
}

/* === Animations === */
@media (prefers-reduced-motion: no-preference) {
    .hero-title-line {
        opacity: 0;
        transform: translateY(20px);
        animation: fadeInUp 0.8s ease forwards;
    }
    
    .hero-title-line:nth-child(2) {
        animation-delay: 0.15s;
    }
    
    .hero-subtitle {
        opacity: 0;
        animation: fadeIn 0.8s ease 0.4s forwards;
    }
    
    .hero-actions {
        opacity: 0;
        animation: fadeIn 0.8s ease 0.6s forwards;
    }
}

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

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}