/* -------------------------------------------------------------
   Design System & Variable Setup (Adaptive Theme Tokens)
   ------------------------------------------------------------- */
:root {
    /* Fonts */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'Fira Code', monospace;
    --font-wide: 'Syncopate', sans-serif;
    
    /* Layout Constants */
    --transition-speed: 0.3s;
    --transition-curve: cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Base HSL components to scale glows */
    --accent-orange-hue: 33;
    --accent-orange-sat: 100%;
    --accent-orange-light: 50%;
}

/* --- Dark Theme (Instrument Black) --- */
body.dark-theme {
    --bg-primary: #0A0A0A;
    --bg-secondary: #121212;
    --bg-tertiary: #1A1A1A;
    --fg-primary: #F4F1E1; /* Warm Instrument White */
    --fg-secondary: #909088;
    --fg-muted: #555550;
    
    /* Glow Colors */
    --accent-orange: hsl(var(--accent-orange-hue), var(--accent-orange-sat), var(--accent-orange-light));
    --accent-green: #00FF66;
    --accent-blue: #0088FF;
    --accent-red: #FF2A2A;
    --accent-amber: #FF9900;
    
    /* Interactive Cards & Borders */
    --glass-bg: rgba(18, 18, 18, 0.7);
    --glass-border: rgba(244, 241, 225, 0.12);
    --glass-shadow: rgba(0, 0, 0, 0.5);
    --card-glow: rgba(255, 140, 0, 0.05);
}

/* --- Light Theme (Warm Alabaster Cream) --- */
body.light-theme {
    --bg-primary: #FAF9F5; /* Matches gerits.dev */
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #F2EFE9;
    --fg-primary: #2D2B28; /* Warm Dark Charcoal */
    --fg-secondary: #5C5751;
    --fg-muted: #938E86;
    
    /* Glow Colors - Adjusted for Light Background Contrast */
    --accent-orange: #E66B00;
    --accent-green: #00B344;
    --accent-blue: #0066CC;
    --accent-red: #D91E1E;
    --accent-amber: #D97700;
    
    /* Interactive Cards & Borders */
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(45, 43, 40, 0.1);
    --glass-shadow: rgba(45, 43, 40, 0.04);
    --card-glow: rgba(230, 107, 0, 0.03);
}

/* -------------------------------------------------------------
   Base Resets & CSS Utilities
   ------------------------------------------------------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--fg-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-speed) var(--transition-curve), 
                color var(--transition-speed) var(--transition-curve);
    position: relative;
    min-height: 100vh;
}

/* --- Backdrop Ambient Glows --- */
.ambient-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(140px);
    opacity: 0.15;
    pointer-events: none;
    z-index: 0;
    transition: opacity var(--transition-speed) var(--transition-curve);
}

body.light-theme .ambient-glow {
    opacity: 0.06;
}

.bg-glow-1 {
    top: 5%;
    right: -10%;
    background: radial-gradient(circle, var(--accent-orange) 0%, transparent 70%);
}

.bg-glow-2 {
    top: 60%;
    left: -15%;
    background: radial-gradient(circle, var(--accent-blue) 0%, transparent 70%);
}

/* --- Typographical Helpers --- */
strong {
    font-weight: 600;
}

/* -------------------------------------------------------------
   Header & Navigation
   ------------------------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 4px 30px var(--glass-shadow);
    transition: background var(--transition-speed), border-color var(--transition-speed);
}

.header-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-logo {
    font-size: 1.8rem;
    color: var(--accent-orange);
    text-shadow: 0 0 15px rgba(255, 140, 0, 0.4);
    animation: rotateLogo 8s linear infinite;
}

@keyframes rotateLogo {
    0% { transform: rotate(0deg); }
    50% { transform: rotate(15deg); }
    100% { transform: rotate(0deg); }
}

.brand-text h1 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 1px;
    line-height: 1;
}

.brand-text span {
    font-family: var(--font-wide);
    font-size: 0.58rem;
    color: var(--fg-secondary);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.main-nav {
    display: flex;
    gap: 1.5rem;
}

.nav-link {
    color: var(--fg-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s var(--transition-curve), transform 0.2s;
    position: relative;
    padding: 0.25rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-orange);
    transition: width 0.25s var(--transition-curve);
}

.nav-link:hover {
    color: var(--fg-primary);
    transform: translateY(-1px);
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* --- Header Action Buttons --- */
.icon-btn {
    background: var(--bg-tertiary);
    color: var(--fg-primary);
    border: 1px solid var(--glass-border);
    padding: 0.6rem;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, border-color 0.2s, transform 0.2s;
    outline: none;
}

.icon-btn:hover {
    background: var(--accent-orange);
    color: #FFF;
    border-color: var(--accent-orange);
    transform: scale(1.05);
    box-shadow: 0 0 15px rgba(255, 140, 0, 0.4);
}

.github-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--fg-primary);
    color: var(--bg-primary);
    border: none;
    padding: 0.55rem 1.2rem;
    border-radius: 30px;
    font-weight: 600;
    text-decoration: none;
    font-size: 0.9rem;
    transition: opacity 0.25s, transform 0.25s, box-shadow 0.25s;
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
}

.github-btn:hover {
    opacity: 0.9;
    transform: translateY(-1.5px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.25);
}

/* -------------------------------------------------------------
   Hero & Speedometer Showcase Section
   ------------------------------------------------------------- */
.hero-section {
    height: 600px;
    position: relative;
    overflow: hidden;
    padding: 0 2rem;
    z-index: 1;
}

.section-container {
    max-width: 1200px;
    height: 100%;
    margin: 0 auto;
    position: relative;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: center;
    height: 100%;
}

.hero-intro {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.badge {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 0.4rem 1rem;
    border-radius: 30px;
    font-family: var(--font-wide);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--fg-secondary);
}

.badge-dot {
    width: 7px;
    height: 7px;
    background: var(--accent-orange);
    border-radius: 50%;
    animation: blinkGlow 1.8s infinite;
}

@keyframes blinkGlow {
    0%, 100% { opacity: 0.4; transform: scale(0.9); }
    50% { opacity: 1; transform: scale(1.1); box-shadow: 0 0 10px var(--accent-orange); }
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.5px;
}

.accent-text {
    background: linear-gradient(135deg, var(--accent-orange) 30%, var(--accent-amber) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.hero-desc {
    font-size: 1.15rem;
    color: var(--fg-secondary);
    max-width: 540px;
    line-height: 1.65;
}

.hero-ctas {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

/* --- Standard Action Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.85rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background 0.25s, transform 0.25s, box-shadow 0.25s, border-color 0.25s;
    outline: none;
}

.btn-primary {
    background: var(--accent-orange);
    color: #FFF;
    border: none;
    box-shadow: 0 8px 25px rgba(255, 140, 0, 0.3);
}

.btn-primary:hover {
    background: hsl(var(--accent-orange-hue), var(--accent-orange-sat), calc(var(--accent-orange-light) - 5%));
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(255, 140, 0, 0.45);
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--fg-primary);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--fg-secondary);
    transform: translateY(-2px);
}

/* -------------------------------------------------------------
   Speedometer Screenshot Cropped Circle Mockup
   ------------------------------------------------------------- */
.circular-screenshot-container {
    height: 110%;
    width: auto;
    aspect-ratio: 1 / 1;
    margin: 0 auto;
    position: relative;
}

.circular-screenshot {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    overflow: hidden;
    position: relative;
    border: 8px solid var(--glass-border);
    box-shadow: 0 25px 65px rgba(0, 0, 0, 0.5), 
                inset 0 0 50px rgba(0, 0, 0, 0.8),
                0 0 40px var(--card-glow);
    background-color: #0c0c0b;
    transition: border-color var(--transition-speed);
}

.circular-screenshot img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    height: 100%;
    width: auto;
    display: block;
    user-select: none;
}

/* -------------------------------------------------------------
   Specs & Technical Feature Cards
   ------------------------------------------------------------- */
.features-section {
    padding: 6rem 2rem;
    background: var(--bg-secondary);
    border-top: 1px solid var(--glass-border);
    transition: background-color var(--transition-speed);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: -0.5px;
}

.section-header p {
    color: var(--fg-secondary);
    font-size: 1.05rem;
    max-width: 580px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 1rem;
}

.feature-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 2.5rem 2rem;
    transition: background var(--transition-speed), border-color var(--transition-speed), transform 0.25s, box-shadow 0.25s;
    box-shadow: 0 10px 25px var(--glass-shadow);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-orange);
    box-shadow: 0 15px 35px var(--glass-shadow), 0 0 30px var(--card-glow);
}

.feature-icon {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
}

/* Palette Icons */
.feature-icon.orange { background: rgba(255, 140, 0, 0.1); color: var(--accent-orange); }
.feature-icon.green { background: rgba(0, 255, 102, 0.1); color: var(--accent-green); }
.feature-icon.blue { background: rgba(0, 136, 255, 0.1); color: var(--accent-blue); }
.feature-icon.red { background: rgba(255, 42, 42, 0.1); color: var(--accent-red); }
.feature-icon.purple { background: rgba(160, 32, 240, 0.1); color: #B330E1; }
.feature-icon.cyan { background: rgba(0, 188, 212, 0.1); color: #00BCD4; }

.feature-card h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--fg-secondary);
    font-size: 0.95rem;
    line-height: 1.55;
}

/* -------------------------------------------------------------
   Footer Layout
   ------------------------------------------------------------- */
.site-footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--glass-border);
    padding: 5rem 2rem 2rem 2rem;
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    margin-bottom: 3.5rem;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.footer-left .brand {
    font-size: 1.2rem;
}

.footer-left p {
    color: var(--fg-secondary);
    font-size: 0.95rem;
    max-width: 440px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links h4 {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--fg-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s var(--transition-curve);
    align-self: flex-start;
}

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

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    border-top: 1px solid var(--glass-border);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: var(--fg-muted);
    font-size: 0.85rem;
}

.socials {
    display: flex;
    gap: 1rem;
}

.socials a {
    color: var(--fg-secondary);
    font-size: 1.2rem;
    transition: color 0.2s var(--transition-curve);
}

.socials a:hover {
    color: var(--accent-orange);
}

/* -------------------------------------------------------------
   Responsive Design & Media Queries
   ------------------------------------------------------------- */
@media (max-width: 1024px) {
    .hero-section {
        height: auto;
        overflow: hidden;
        padding: 6rem 2rem 4rem 2rem;
    }
    
    .circular-screenshot-container {
        height: auto;
        width: 100%;
        max-width: 460px;
        aspect-ratio: 1 / 1;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 4rem;
        height: auto;
    }
    
    .hero-intro {
        align-items: center;
        text-align: center;
    }
    
    .hero-desc {
        max-width: 600px;
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 1rem;
    }
    
    .main-nav {
        display: none; /* Hide nav links on tiny viewports */
    }
    
    .hero-section {
        padding: 4rem 1rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .circular-screenshot-container {
        max-width: 320px;
    }
    
    .features-section {
        padding: 4rem 1rem;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}