/* Neon city night theme */
body {
    margin: 0;
    padding: 0;
    font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    color: #d8f3ff;
    background: linear-gradient(160deg, rgba(8, 12, 26, 0.85), rgba(12, 5, 24, 0.88)), url("/static/img/bg-city-night.jpg") center/cover fixed no-repeat;
}

.container {
    position: relative;
    max-width: 900px;
    margin: 70px auto;
    padding: 44px;
    background: rgba(9, 15, 32, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 20px;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

h1, h2, h3, h4, h5, h6 {
    color: #f7fbff;
    letter-spacing: 0.4px;
    text-shadow: 0 0 22px rgba(0, 255, 255, 0.55), 0 8px 24px rgba(0, 0, 0, 0.5);
}

h1 {
    font-size: 2.5em;
    margin-bottom: 0.25em;
    background: linear-gradient(120deg, #0ef 0%, #a855f7 50%, #ff3cac 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

p, li {
    color: #d0e6ff;
    line-height: 1.85;
}

a {
    color: #7cf3ff;
    text-decoration: none;
    position: relative;
}

a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #0ef, #ff3cac);
    opacity: 0.6;
    transition: opacity 0.2s ease, transform 0.2s ease;
    transform: scaleX(0);
    transform-origin: left;
}

a:hover::after {
    opacity: 1;
    transform: scaleX(1);
}

blockquote {
    margin: 1.8em 0;
    padding: 1.3em 1.7em;
    border-left: 4px solid #0ef;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    box-shadow: inset 0 0 24px rgba(14, 239, 255, 0.3);
}

code {
    background: rgba(255, 255, 255, 0.08);
    padding: 0.28em 0.55em;
    border-radius: 7px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #9be6ff;
}

pre code {
    display: block;
    padding: 1.3em;
    overflow-x: auto;
    background: rgba(5, 9, 20, 0.9);
    box-shadow: inset 0 0 30px rgba(0, 0, 0, 0.55);
}

img {
    max-width: 100%;
    border-radius: 16px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.floating-payment-guide {
    background: linear-gradient(135deg, rgba(14, 239, 255, 0.9), rgba(255, 60, 172, 0.9));
    color: #0b0f1f;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 18px 36px rgba(0, 0, 0, 0.55);
}

/* Keep the floating guide inside the article container */
body.neon-noir .floating-payment-guide {
    position: absolute !important;
    top: 32px;
    right: 18px;
    z-index: 20;
}

.payment-modal {
    background: rgba(5, 9, 20, 0.92);
    color: #e9f4ff;
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 0 18px 44px rgba(0, 0, 0, 0.65);
}

.paywall-placeholder {
    background: linear-gradient(130deg, rgba(255, 255, 255, 0.07), rgba(14, 239, 255, 0.08));
    border: 1px dashed rgba(124, 243, 255, 0.6);
}

.btn-primary, .paywall-placeholder .btn-primary {
    background: radial-gradient(circle at 20% 20%, #0ef 0%, #7c3aed 45%, #ff3cac 100%);
    color: #0b0f1f;
    border: none;
    box-shadow: 0 12px 26px rgba(255, 60, 172, 0.45);
}

@media (max-width: 900px) {
    .container {
        margin: 36px 12px;
        padding: 28px;
    }
}