/* ===========================
   CSS Variables
   =========================== */
:root {
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #1a1a1a;
    --color-bg-tertiary: #2a2a2a;
    --color-neon-cyan: #00ffff;
    --color-neon-purple: #b000ff;
    --color-neon-pink: #ff00ff;
    --color-text-primary: #ffffff;
    --color-text-secondary: #a0a0a0;
    --color-glass: rgba(255, 255, 255, 0.05);
    --color-glass-border: rgba(255, 255, 255, 0.1);
    --font-primary: 'Courier New', monospace;
    --transition-speed: 0.3s;
}

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

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

/* ===========================
   Canvas Background
   =========================== */
#matrix-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.3;
}

/* ===========================
   Hero Section
   =========================== */
#hero {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 2rem;
}

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

.glitch-text {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: bold;
    text-transform: uppercase;
    color: var(--color-neon-cyan);
    position: relative;
    letter-spacing: 0.1em;
    animation: glitch-flicker 3s infinite;
}

.glitch-text:hover {
    animation: glitch-effect 0.3s infinite;
}

@keyframes glitch-flicker {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.95; }
}

@keyframes glitch-effect {
    0% {
        transform: translate(0);
        text-shadow: 2px 2px var(--color-neon-pink), -2px -2px var(--color-neon-purple);
    }
    25% {
        transform: translate(-2px, 2px);
        text-shadow: -2px -2px var(--color-neon-pink), 2px 2px var(--color-neon-purple);
    }
    50% {
        transform: translate(2px, -2px);
        text-shadow: 2px -2px var(--color-neon-pink), -2px 2px var(--color-neon-purple);
    }
    75% {
        transform: translate(-2px, -2px);
        text-shadow: -2px 2px var(--color-neon-pink), 2px -2px var(--color-neon-purple);
    }
    100% {
        transform: translate(0);
        text-shadow: 2px 2px var(--color-neon-pink), -2px -2px var(--color-neon-purple);
    }
}

.subheadline {
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    color: var(--color-text-secondary);
    margin: 2rem 0;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 3rem;
}

.cta-button {
    padding: 0.9rem 2.4rem;
    font-size: 1rem;
    font-family: var(--font-primary);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid;
    transition: all var(--transition-speed);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    backdrop-filter: blur(6px);
}

.cta-button span {
    position: relative;
    z-index: 1;
}

.cta-button.primary {
    background: linear-gradient(135deg, var(--color-neon-cyan), var(--color-neon-purple));
    border-color: transparent;
    color: var(--color-bg-primary);
    box-shadow: 0 14px 40px rgba(0, 255, 255, 0.35);
}

.cta-button.primary:hover {
    box-shadow: 0 18px 60px rgba(0, 255, 255, 0.5);
    transform: translateY(-1px);
}

.cta-button.secondary {
    background: transparent;
    border-color: var(--color-neon-purple);
    color: var(--color-neon-purple);
}

.cta-button.secondary:hover {
    background: rgba(176, 0, 255, 0.12);
    box-shadow: 0 10px 30px rgba(176, 0, 255, 0.35);
    transform: translateY(-1px);
}

/* ===========================
   Features Grid & Overview
   =========================== */
#overview {
    position: relative;
    z-index: 1;
    padding: 4rem 2rem 1rem 2rem;
}

.overview-container {
    max-width: 1100px;
    margin: 0 auto;
}

.overview-lead {
    color: var(--color-text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 2.5rem;
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.overview-block {
    background: var(--color-glass);
    backdrop-filter: blur(12px);
    border: 1px solid var(--color-glass-border);
    border-radius: 12px;
    padding: 1.75rem 1.5rem;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed), border-color var(--transition-speed);
}

.overview-block h3 {
    font-size: 1.2rem;
    color: var(--color-neon-cyan);
    margin-bottom: 0.75rem;
}

.overview-block p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.overview-block:hover {
    transform: translateY(-4px);
    border-color: var(--color-neon-cyan);
    box-shadow: 0 20px 60px rgba(0, 255, 255, 0.08);
}

.overview-footer {
    max-width: 800px;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
}

#features {
    position: relative;
    z-index: 1;
    padding: 6rem 2rem 5rem 2rem;
}

.features-inner {
    max-width: 900px;
    margin: 0 auto 3rem auto;
    text-align: center;
}

.section-heading {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
}

.features-intro {
    color: var(--color-text-secondary);
    max-width: 720px;
    margin: 0 auto;
    font-size: 0.95rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--color-glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-glass-border);
    border-radius: 14px;
    padding: 2.25rem 2rem 2rem 2rem;
    text-align: center;
    transition: all var(--transition-speed);
    position: relative;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-neon-cyan), var(--color-neon-purple));
    opacity: 0;
    transition: opacity var(--transition-speed);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-neon-cyan);
    box-shadow: 0 18px 50px rgba(0, 255, 255, 0.18);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 10px var(--color-neon-cyan));
}

.feature-card h3 {
    font-size: 1.3rem;
    color: var(--color-neon-cyan);
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--color-text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

/* ===========================
   Terminal Section
   =========================== */
#terminal-section {
    position: relative;
    z-index: 1;
    padding: 4rem 2rem;
}

.terminal-container {
    max-width: 900px;
    margin: 0 auto;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-glass-border);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.terminal-header {
    background: var(--color-bg-tertiary);
    padding: 0.8rem 1rem;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--color-glass-border);
}

.terminal-buttons {
    display: flex;
    gap: 0.5rem;
    margin-right: 1rem;
}

.terminal-button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-button.close {
    background: #ff5f56;
}

.terminal-button.minimize {
    background: #ffbd2e;
}

.terminal-button.maximize {
    background: #27c93f;
}

.terminal-title {
    color: var(--color-neon-cyan);
    font-size: 0.9rem;
    flex: 1;
}

.terminal-usage-indicator {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    opacity: 0.85;
    white-space: nowrap;
}

.terminal-body {
    padding: 1.5rem;
    min-height: 300px;
    max-height: 500px;
    overflow-y: auto;
}

#terminal-output {
    margin-bottom: 1rem;
}

.terminal-line {
    margin-bottom: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.terminal-prompt {
    color: var(--color-neon-purple);
    font-weight: bold;
}

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

.terminal-response {
    color: var(--color-neon-cyan);
    white-space: pre-wrap;
    word-wrap: break-word;
}

.terminal-input-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#terminal-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    outline: none;
    padding: 0.5rem 0;
}

#terminal-input::placeholder {
    color: var(--color-text-secondary);
}

.terminal-disclaimer {
    padding: 0.8rem 1.5rem;
    background: var(--color-bg-tertiary);
    border-top: 1px solid var(--color-glass-border);
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    text-align: center;
}

.terminal-loading {
    display: inline-block;
    color: var(--color-neon-cyan);
}

.terminal-loading::after {
    content: '...';
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { content: '.'; }
    33% { content: '..'; }
    66% { content: '...'; }
}

/* ===========================
   Footer
   =========================== */
#footer {
    position: relative;
    z-index: 1;
    padding: 3rem 2rem;
    text-align: center;
}

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

.footer-content p {
    color: var(--color-text-secondary);
    margin-bottom: 1rem;
    opacity: 0.7;
}

.footer-content a {
    color: var(--color-neon-cyan);
    text-decoration: none;
    transition: color var(--transition-speed);
}

.footer-content a:hover {
    color: var(--color-neon-purple);
}

.footer-links {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.footer-links a {
    opacity: 0.7;
    transition: opacity var(--transition-speed);
}

.footer-links a:hover {
    opacity: 1;
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 768px) {
    #hero {
        min-height: 80vh;
        padding: 1.5rem;
    }

    #overview {
        padding: 3rem 1.5rem 1rem 1.5rem;
    }

    .overview-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .cta-button {
        width: 100%;
    }

    #features {
        padding: 3rem 1.5rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    #terminal-section {
        padding: 2rem 1rem;
    }

    .terminal-body {
        padding: 1rem;
        min-height: 250px;
        max-height: 400px;
    }

    .terminal-title {
        font-size: 0.75rem;
    }

    .footer-links {
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .glitch-text {
        font-size: 2.5rem;
    }

    .subheadline {
        font-size: 1rem;
    }

    .terminal-header {
        padding: 0.6rem 0.8rem;
    }

    .terminal-button {
        width: 10px;
        height: 10px;
    }

    .terminal-title {
        font-size: 0.7rem;
    }

    #terminal-input {
        font-size: 0.9rem;
    }
}

/* ===========================
   Scrollbar Styling
   =========================== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-neon-cyan);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-neon-purple);
}