:root {
    --bg: #0b1020;
    --card: #121933;
    --border: rgba(255, 255, 255, 0.08);
    --text: #eef2ff;
    --muted: #9ca3af;
    --primary: #7c3aed;
    --primary-hover: #6d28d9;
    --success: #10b981;
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
    --radius: 22px;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: radial-gradient(circle at top left, rgba(124, 58, 237, 0.18), transparent 30%),
    radial-gradient(circle at bottom right, rgba(16, 185, 129, 0.12), transparent 25%),
    var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    width: min(1000px, calc(100% - 48px));
    margin: 0 auto;
}

header {
    padding: 28px 0;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.logo span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-links a {
    text-decoration: none;
    color: var(--muted);
    font-size: 0.95rem;
    transition: 0.2s ease;
}

.nav-links a:hover {
    color: var(--text);
}

button {
    margin-left: 30%;
    width: 40%;
    background: #1976d2;
    color: white;
    border: none;
    border-radius: 14px;
    padding: 14px 22px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: 0.2s ease;
    box-shadow: 0 12px 30px rgba(124, 58, 237, 0.28);
}

h1 {
    font-size:3rem;
    letter-spacing:-0.05em;
    margin-bottom:18px;
}

.long-paragraph {
    color:var(--muted);
    font-size:1.02rem;
}

.break {
    margin-bottom:32px;
}

button:hover {
    background: #1259a7;
}

.button-sec {
    border: 1px solid var(--border);
    box-shadow: none;
    height: 52px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(124, 58, 237, 0.15);
    color: #c4b5fd;
    margin-bottom: 18px;
    font-size: 1.3rem;
    text-decoration: none;
    transition: 0.2s ease;
}

.button-sec:hover {
    border-color: rgba(124, 58, 237, 0.5);
    background: rgba(124, 58, 237, 0.35);
}

.hero {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 64px;
    align-items: center;
    padding: 72px 0 88px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    color: #c4b5fd;
    padding: 10px 16px;
    border-radius: 999px;
    margin-bottom: 24px;
    font-size: 0.9rem;
    font-weight: 500;
}

.hero h1 {
    font-size: clamp(3rem, 6vw, 5.2rem);
    line-height: 1;
    letter-spacing: -0.06em;
    margin-bottom: 24px;
}

.hero p {
    color: var(--muted);
    font-size: 1.12rem;
    max-width: 620px;
    margin-bottom: 36px;
}

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

.terminal {
    background: rgba(11, 16, 32, 0.85);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    backdrop-filter: blur(14px);
}

.red {
    background: #ef4444;
}

.yellow {
    background: #f59e0b;
}

.green {
    background: #10b981;
}

.terminal-body {
    padding: 24px;
    font-family: monospace;
    font-size: 0.92rem;
    color: #d1d5db;
}

.line {
    margin-bottom: 12px;
    white-space: pre-wrap;
}

.line-parameter {
    margin-bottom: 12px;
    margin-left: 24px;
    white-space: pre-wrap;
}

.line-return {
    margin-bottom: 12px;
    margin-left: 48px;
    white-space: pre-wrap;
    color: var(--success);
}

.section {
    padding: 88px 0;
}

.section-header {
    margin-bottom: 48px;
    text-align: center;
}

.section-header h2 {
    font-size: 2.4rem;
    letter-spacing: -0.04em;
    margin-bottom: 14px;
}

.section-header p {
    color: var(--muted);
    max-width: 720px;
    margin: 0 auto;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-3px);
    border-color: rgba(124, 58, 237, 0.4);
}

.panel {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding:40px;
}

.panel-text {
    margin-bottom:28px;
    color:var(--muted);
}

.feature-icon {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(124, 58, 237, 0.15);
    margin-bottom: 18px;
    font-size: 1.3rem;
}

.feature-card h3 {
    margin-bottom: 10px;
    font-size: 1.15rem;
}

.feature-card p {
    color: var(--muted);
    font-size: 0.96rem;
}

.pricing {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 24px;
}

.pricing-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 34px;
    position: relative;
    transition: 0.2s ease;
}

.pricing-card.popular {
    border-color: rgba(124, 58, 237, 0.5);
    background: rgba(124, 58, 237, 0.08);
}

.pricing-card:hover {
    background: rgba(255, 255, 255, 0.08);
}

.tag {
    position: absolute;
    top: 18px;
    right: 18px;
    background: var(--primary);
    color: white;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.price {
    font-size: 3rem;
    font-weight: 800;
    margin: 18px 0;
    letter-spacing: -0.05em;
}

.price span {
    font-size: 1rem;
    color: var(--muted);
    font-weight: 500;
}

.pricing ul {
    list-style: none;
    margin: 24px 0 32px;
    height: 180px;
}

.pricing li {
    margin-bottom: 12px;
    color: var(--muted);
}

.cta {
    padding: 96px 0;
}

.cta-box {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.16), rgba(16, 185, 129, 0.08));
    border: 1px solid var(--border);
    border-radius: 32px;
    padding: 56px;
    text-align: center;
    box-shadow: var(--shadow);
}

.cta-box h2 {
    font-size: 2.6rem;
    margin-bottom: 18px;
    letter-spacing: -0.04em;
}

.cta-box p {
    color: var(--muted);
    margin-bottom: 32px;
    font-size: 1.08rem;
}

footer {
    padding: 42px 0;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.92rem;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.login-box {
    background: white;
    padding: 30px;
    border-radius: 8px;

    width: 320px;

    box-shadow: 0 2px 10px rgba(0,0,0,0.1);

    max-width: fit-content;
    margin-left: auto;
    margin-right: auto;
    margin-top: 100px;
}

h2 {
    margin-top: 0;
    text-align: center;
}

.login-title {
    color: #121933;
}

label {
    color: #121933;
}

input {
    width: 100%;
    padding: 12px;

    margin-bottom: 15px;

    border: 1px solid #ccc;
    border-radius: 4px;

    box-sizing: border-box;
}

.error {
    color: red;
    margin-bottom: 10px;
    text-align: center;
}

.success {
    color: green;
    margin-bottom: 10px;
    text-align: center;
}

.links {
    margin-top: 20px;
    margin-bottom: 30px;
    text-align: center;
}

@media (max-width: 900px) {
    .hero {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 3.4rem;
    }

    .cta-box {
        padding: 40px 28px;
    }
}

@media (max-width: 640px) {
    .container {
        width: calc(100% - 32px);
    }

    .nav-links {
        display: none;
    }

    .hero {
        padding-top: 32px;
    }

    .hero h1 {
        font-size: 2.8rem;
    }

    .section {
        padding: 72px 0;
    }
}