:root {
    --bg-color: #0a0a0a;
    --accent: #10B981;
    --accent-glow: rgba(16, 185, 129, 0.4);
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.08);
    --font-sans: 'Inter', sans-serif;
    --font-mono: 'Fira Code', monospace;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Background Effect */
.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -2;
    pointer-events: none;
}

.bg-glow {
    position: fixed;
    top: -20%;
    left: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.08) 0%, transparent 60%);
    border-radius: 50%;
    z-index: -1;
    pointer-events: none;
    animation: float 15s ease-in-out infinite alternate;
}

.bg-glow-2 {
    position: fixed;
    bottom: -20%;
    right: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.05) 0%, transparent 60%);
    border-radius: 50%;
    z-index: -1;
    pointer-events: none;
    animation: float 20s ease-in-out infinite alternate-reverse;
}

@keyframes float {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

/* Fade in animation */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInAnim 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.fade-delay-1 { animation-delay: 0.2s; }
.fade-delay-2 { animation-delay: 0.4s; }
.fade-delay-3 { animation-delay: 0.6s; }
.fade-delay-4 { animation-delay: 0.8s; }

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

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 4rem;
    border-bottom: 1px solid var(--card-border);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -1px;
    text-decoration: none;
    color: var(--text-main);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 2rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.clock {
    color: var(--text-muted);
}

.grid-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent);
    font-weight: 700;
    padding: 0.4rem 1rem;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 99px;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.pulsing-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Hero Section */
.hero {
    max-width: 1000px;
    margin: 8rem auto 4rem;
    text-align: center;
    padding: 0 2rem;
}

.hero-brand {
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 2rem;
    display: inline-block;
    padding: 0.8rem 2rem;
    background: rgba(16, 185, 129, 0.15);
    border: 2px solid rgba(16, 185, 129, 0.3);
    border-radius: 99px;
    box-shadow: 0 0 25px var(--accent-glow);
}

.hero h1 {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #fff, #a1a1aa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.04em;
}

.sub-headline {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 3rem;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    align-items: center;
}

.btn {
    cursor: pointer;
    font-family: var(--font-sans);
    font-weight: 600;
    transition: all 0.2s ease;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.btn.primary {
    background-color: var(--accent);
    color: #000;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border: none;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--accent-glow);
    background-color: #13d193;
}

.btn.terminal {
    background-color: #111;
    color: var(--text-main);
    border: 1px solid var(--card-border);
    padding: 1rem 1.5rem;
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 400;
    gap: 0.8rem;
}

.btn.terminal:hover {
    border-color: #333;
    background-color: #161616;
}

.btn.terminal .prompt {
    color: var(--accent);
}

.btn.terminal .copy-icon {
    color: var(--text-muted);
    transition: color 0.2s;
}

.btn.terminal:hover .copy-icon {
    color: var(--text-main);
}

/* Feature Section */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1100px;
    margin: 4rem auto 8rem;
    padding: 0 2rem;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: rgba(16, 185, 129, 0.3);
}

.feature-icon {
    color: var(--accent);
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Simulator Section */
.simulator-wrapper {
    max-width: 700px;
    margin: 6rem auto 8rem;
    padding: 0 2rem;
}

.glass-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 3rem;
    backdrop-filter: blur(20px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.glass-card h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

select {
    width: 100%;
    padding: 1rem;
    background-color: #111;
    border: 1px solid var(--card-border);
    color: var(--text-main);
    border-radius: 8px;
    font-family: var(--font-sans);
    font-size: 1rem;
    outline: none;
    appearance: none;
    transition: border-color 0.2s;
}

select:focus {
    border-color: var(--accent);
}

.action-btn {
    width: 100%;
    background: transparent;
    border: 2px solid var(--accent);
    color: var(--accent);
    padding: 1.2rem;
    font-size: 1.1rem;
    letter-spacing: 1px;
    margin-top: 1rem;
    cursor: pointer;
    font-family: var(--font-sans);
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.2s;
}

.action-btn:hover {
    background: var(--accent);
    color: #000;
    box-shadow: 0 0 20px var(--accent-glow);
}

/* Output Box */
.output-box {
    margin-top: 2rem;
    padding: 2rem;
    background: #050505;
    border-radius: 8px;
    border: 1px solid #222;
    font-family: var(--font-mono);
    font-size: 0.95rem;
    opacity: 1;
    transform: translateY(0);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.output-box.hidden {
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    position: absolute;
    visibility: hidden;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 0.8rem 0;
    border-bottom: 1px dashed #222;
}

.stat-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.stat-row.highlight {
    margin-top: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid #333;
    font-size: 1.1rem;
    font-weight: 700;
}

.label {
    color: var(--text-muted);
}

.value {
    text-align: right;
}

.value.dirty {
    color: #ef4444; /* red */
}

.value.green {
    color: var(--accent);
}

.value.super-green {
    color: var(--accent);
    text-shadow: 0 0 10px var(--accent-glow);
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem 2rem;
    color: #555;
    font-size: 0.85rem;
    font-family: var(--font-mono);
    border-top: 1px solid #111;
}