/* Custom CSS for HackGPT Landing Page */

:root {
    --color-bg: #070a0e;
    --color-bg-card: rgba(16, 22, 30, 0.65);
    --color-primary: #00ff66;
    --color-primary-glow: rgba(0, 255, 102, 0.15);
    --color-info: #00e1ff;
    --color-info-glow: rgba(0, 225, 255, 0.15);
    --color-text: #e2e8f0;
    --color-text-muted: #94a3b8;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-glow: rgba(0, 255, 102, 0.3);
    --font-heading: 'Outfit', 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'Fira Code', monospace;
    --glow-primary: 0 0 20px var(--color-primary-glow);
    --glow-info: 0 0 20px var(--color-info-glow);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

/* Gradients & Utilities */
.gradient-text {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-info) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Navigation Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(7, 10, 14, 0.75);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 0;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
}

.nav-logo {
    max-height: 38px;
    object-fit: contain;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 24px;
    cursor: pointer;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-muted);
}

.nav-link:hover, .nav-link.active {
    color: var(--color-primary);
    text-shadow: 0 0 10px rgba(0, 255, 102, 0.4);
}

.nav-btn {
    background: linear-gradient(135deg, var(--color-primary) 0%, #00d254 100%);
    color: #000;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    box-shadow: var(--glow-primary);
}

.nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 25px rgba(0, 255, 102, 0.4);
    color: #000;
}

/* Hero Section */
.hero {
    position: relative;
    padding: 160px 0 100px 0;
    min-height: 90vh;
    display: flex;
    align-items: center;
}

/* Glow Background Spots */
.hero-glow-1 {
    position: absolute;
    top: 10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, rgba(0, 255, 102, 0.08) 0%, transparent 70%);
    z-index: 0;
    pointer-events: none;
}

.hero-glow-2 {
    position: absolute;
    bottom: 10%;
    right: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, rgba(0, 225, 255, 0.08) 0%, transparent 70%);
    z-index: 0;
    pointer-events: none;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 255, 102, 0.08);
    border: 1px solid rgba(0, 255, 102, 0.2);
    color: var(--color-primary);
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 54px;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.1;
}

.hero-description {
    font-size: 18px;
    color: var(--color-text-muted);
    margin-bottom: 40px;
    max-width: 580px;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, #00d254 100%);
    color: #000;
    box-shadow: var(--glow-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 25px rgba(0, 255, 102, 0.45);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--color-border);
    color: var(--color-text);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* Glassmorphic Terminal Card */
.terminal-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    backdrop-filter: blur(16px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.terminal-card:hover {
    border-color: var(--color-border-glow);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 255, 102, 0.08);
}

.terminal-header {
    background: rgba(0, 0, 0, 0.35);
    padding: 12px 18px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
}

.terminal-dots {
    display: flex;
    gap: 6px;
    margin-right: 20px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dot-red { background-color: #ff5f56; }
.dot-yellow { background-color: #ffbd2e; }
.dot-green { background-color: #27c93f; }

.terminal-title {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--color-text-muted);
}

.terminal-body {
    padding: 20px;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.6;
    color: #abb2bf;
    background: rgba(0, 0, 0, 0.15);
}

.line {
    margin-bottom: 6px;
    word-break: break-all;
}

.t-cyan { color: var(--color-info); }
.t-green { color: var(--color-primary); }
.t-yellow { color: #e5c07b; }
.t-blue { color: #61afef; }
.t-red { color: #f44336; }

.cursor {
    display: inline-block;
    width: 8px;
    height: 15px;
    background: var(--color-primary);
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

/* Features Section */
.features {
    padding: 100px 0;
    position: relative;
    border-top: 1px solid var(--color-border);
}

.section-header {
    text-align: center;
    max-width: 650px;
    margin: 0 auto 60px auto;
}

.section-title {
    font-size: 38px;
    font-weight: 800;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--color-text-muted);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 32px;
    backdrop-filter: blur(12px);
    transition: var(--transition);
}

.feature-card:hover {
    border-color: rgba(0, 225, 255, 0.25);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 225, 255, 0.05);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background: rgba(0, 225, 255, 0.08);
    border: 1px solid rgba(0, 225, 255, 0.2);
    color: var(--color-info);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 24px;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background: var(--color-info);
    color: #000;
    box-shadow: var(--glow-info);
}

.feature-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-description {
    font-size: 15px;
    color: var(--color-text-muted);
}

/* Interactive Demo Sandbox */
.demo-section {
    padding: 100px 0;
    background: rgba(255, 255, 255, 0.01);
    border-top: 1px solid var(--color-border);
}

.interactive-terminal {
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.interactive-terminal .terminal-body {
    height: 350px;
    overflow-y: auto;
    background: #0b0f14;
}

.terminal-input-line {
    display: flex;
    align-items: center;
    gap: 10px;
}

#terminalInput {
    background: none;
    border: none;
    color: var(--color-text);
    font-family: var(--font-mono);
    font-size: 13px;
    width: 100%;
    outline: none;
}

/* Connect Section */
.connect-section {
    padding: 100px 0;
    border-top: 1px solid var(--color-border);
}

.connect-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.connect-content h2 {
    font-size: 38px;
    font-weight: 800;
    margin-bottom: 16px;
}

.connect-content p {
    color: var(--color-text-muted);
    font-size: 16px;
    margin-bottom: 32px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-border);
    padding: 14px 20px;
    border-radius: 8px;
}

.contact-item i {
    color: var(--color-primary);
    font-size: 18px;
}

.contact-item:hover {
    border-color: var(--color-primary);
    background: rgba(0, 255, 102, 0.03);
}

.social-links-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 40px;
    backdrop-filter: blur(12px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}

.social-links-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 24px;
    text-align: center;
}

.social-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 12px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    color: #fff;
    cursor: pointer;
}

.social-btn.linkedin { background: #0077b5; }
.social-btn.instagram { background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%); }
.social-btn.twitter { background: #000000; border: 1px solid var(--color-border); }
.social-btn.threads { background: #1f1f1f; }
.social-btn.github { background: #24292e; }
.social-btn.discord { background: #5865F2; }

.social-btn:hover {
    transform: translateY(-2px);
    filter: brightness(1.15);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Footer */
.footer {
    background: #040608;
    padding: 40px 0;
    border-top: 1px solid var(--color-border);
    font-size: 14px;
    color: var(--color-text-muted);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

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

/* Responsive Queries */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .connect-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        padding: 24px;
        gap: 20px;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .hero-title {
        font-size: 42px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}