:root {
    --primary: #FF4500;
    --primary-light: #FF7849;
    --bg-dark: #0F172A;
    --bg-card: #1E293B;
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    --accent: #38BDF8;
}

body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    background: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
}

header {
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    padding: 2rem 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid #334155;
}

.header-content {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 1.8rem;
    color: var(--primary);
}

.subtitle {
    color: var(--text-muted);
    margin-top: 0.5rem;
}

nav {
    margin-top: 1.5rem;
}

nav a {
    color: var(--text-main);
    text-decoration: none;
    margin: 0 1rem;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.3s;
}

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

.try-bepsbot-banner {
    background: linear-gradient(135deg, #FF4500 0%, #C23500 100%);
    padding: 4rem 2rem;
    text-align: center;
}

.try-bepsbot-btn {
    display: inline-block;
    background: white;
    color: var(--primary);
    padding: 0.8rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    margin-top: 1.5rem;
    transition: transform 0.2s;
}

.try-bepsbot-btn:hover {
    transform: translateY(-3px);
}

main {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

section {
    padding: 4rem 0;
}

.section-header {
    margin-bottom: 2rem;
}

.badge {
    background: linear-gradient(90deg, #38BDF8 0%, #FF4500 100%);
    color: #fff;
    padding: 0.3rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    box-shadow: 0 2px 8px rgba(56,189,248,0.08);
}

h2 {
    font-size: 2.4rem;
    margin-top: 1rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 0.01em;
}

.diagram-container {
    background: var(--glass);
    border: 1px solid #334155;
    border-radius: var(--radius);
    padding: 2rem;
    margin: 2.5rem 0;
    text-align: center;
    box-shadow: var(--shadow);
    transition: box-shadow var(--transition);
}

.diagram-container img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(56,189,248,0.08);
    transition: transform var(--transition), box-shadow var(--transition);
}
.diagram-container img:hover {
    transform: scale(1.03);
    box-shadow: 0 8px 32px rgba(56,189,248,0.18);
}

.caption {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 1rem;
}

.algorithm-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.algo-card {
    background: var(--bg-card);
    padding: 2rem 1.5rem;
    border-radius: var(--radius);
    border-top: 4px solid var(--primary);
    box-shadow: var(--shadow);
    transition: box-shadow var(--transition), transform var(--transition);
}
.algo-card:hover {
    box-shadow: 0 8px 32px rgba(255,69,0,0.18);
    transform: translateY(-4px) scale(1.02);
}

.algo-card h4 {
    margin-top: 0;
    color: var(--primary);
}

.process-steps {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.step {
    display: flex;
    align-items: center;
    gap: 2rem;
    background: var(--bg-card);
    padding: 1.2rem 2.2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: box-shadow var(--transition), transform var(--transition);
}
.step:hover {
    box-shadow: 0 8px 32px rgba(56,189,248,0.18);
    transform: scale(1.01);
}

.step-num {
    font-size: 2.2rem;
    font-weight: 800;
    color: rgba(255, 69, 0, 0.18);
    background: linear-gradient(90deg, #38BDF8 0%, #FF4500 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
}

@media (max-width: 700px) {
    main, .header-content {
        padding: 1rem;
    }
    section {
        padding: 2rem 0.5rem;
    }
    h2 {
        font-size: 1.5rem;
    }
    .diagram-container {
        padding: 1rem;
    }
    .algo-card, .step {
        padding: 1rem;
    }
    .tech-tags {
        gap: 0.5rem;
    }
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    justify-content: center;
}

.tag {
    background: linear-gradient(90deg, #334155 0%, #38BDF8 100%);
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-size: 1rem;
    color: #fff;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(56,189,248,0.08);
    letter-spacing: 0.04em;
    transition: box-shadow var(--transition), transform var(--transition);
}
.tag:hover {
    box-shadow: 0 8px 32px rgba(56,189,248,0.18);
    transform: scale(1.05);
}

footer {
    text-align: center;
    padding: 4rem 1rem;
    border-top: 1px solid #334155;
    color: var(--text-muted);
    background: var(--glass);
    border-radius: var(--radius) var(--radius) 0 0;
    box-shadow: var(--shadow);
    margin-top: 2rem;
}
footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition);
}
footer a:hover {
    color: var(--accent);
}