/* --- CORE CYBERPUNK CSS --- */
        body {
            background-color: #000;
            color: #e0e0e0;
            font-family: 'Fira Code', monospace;
            overflow-x: hidden;
        }

        /* Matrix Background Canvas */
        #matrixCanvas {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            opacity: 0.3;
        }

        /* Custom Scrollbar */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: #0a0a12; }
        ::-webkit-scrollbar-thumb { background: #00f3ff; border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: #bc13fe; }

        /* Neon Borders & Shadows */
        .cyber-border {
            border: 1px solid rgba(0, 243, 255, 0.3);
            box-shadow: 0 0 10px rgba(0, 243, 255, 0.1);
            backdrop-filter: blur(10px);
            position: relative;
        }
        .cyber-border::before {
            content: '';
            position: absolute;
            top: -1px; left: -1px;
            width: 10px; height: 10px;
            border-top: 2px solid #00f3ff;
            border-left: 2px solid #00f3ff;
        }
        .cyber-border::after {
            content: '';
            position: absolute;
            bottom: -1px; right: -1px;
            width: 10px; height: 10px;
            border-bottom: 2px solid #00f3ff;
            border-right: 2px solid #00f3ff;
        }

        .cyber-input {
            background: rgba(0, 0, 0, 0.6);
            border: 1px solid #333;
            color: #00f3ff;
            font-family: 'Fira Code', monospace;
            transition: all 0.3s ease;
        }
        .cyber-input:focus {
            border-color: #00f3ff;
            box-shadow: 0 0 15px rgba(0, 243, 255, 0.3);
            outline: none;
        }

        /* Glitch Effect Class */
        .glitch-text {
            position: relative;
        }
        .glitch-text::before, .glitch-text::after {
            content: attr(data-text);
            position: absolute;
            top: 0; left: 0;
            width: 100%; height: 100%;
        }
        .glitch-text::before {
            left: 2px;
            text-shadow: -1px 0 #ff00c1;
            clip: rect(44px, 450px, 56px, 0);
            animation: glitch-anim 5s infinite linear alternate-reverse;
        }
        .glitch-text::after {
            left: -2px;
            text-shadow: -1px 0 #00fff9;
            clip: rect(44px, 450px, 56px, 0);
            animation: glitch-anim2 5s infinite linear alternate-reverse;
        }

        @keyframes glitch-anim {
            0% { clip: rect(12px, 9999px, 88px, 0); }
            5% { clip: rect(54px, 9999px, 86px, 0); }
            10% { clip: rect(6px, 9999px, 16px, 0); }
            15% { clip: rect(42px, 9999px, 9px, 0); }
            20% { clip: rect(69px, 9999px, 73px, 0); }
            100% { clip: rect(62px, 9999px, 2px, 0); }
        }
        @keyframes glitch-anim2 {
            0% { clip: rect(2px, 9999px, 48px, 0); }
            5% { clip: rect(84px, 9999px, 26px, 0); }
            10% { clip: rect(16px, 9999px, 96px, 0); }
            15% { clip: rect(12px, 9999px, 29px, 0); }
            20% { clip: rect(59px, 9999px, 13px, 0); }
            100% { clip: rect(32px, 9999px, 92px, 0); }
        }

        /* Buttons */
        .cyber-btn {
            background: linear-gradient(90deg, transparent, rgba(0, 243, 255, 0.1), transparent);
            border: 1px solid #00f3ff;
            color: #00f3ff;
            text-transform: uppercase;
            letter-spacing: 2px;
            position: relative;
            overflow: hidden;
            transition: all 0.3s;
        }
        .cyber-btn:hover {
            background: #00f3ff;
            color: #000;
            box-shadow: 0 0 20px #00f3ff;
        }
        .cyber-btn-secondary {
            border-color: #bc13fe;
            color: #bc13fe;
        }
        .cyber-btn-secondary:hover {
            background: #bc13fe;
            color: #fff;
            box-shadow: 0 0 20px #bc13fe;
        }

        /* Scanline Overlay */
        .crt::before {
            content: " ";
            display: block;
            position: absolute;
            top: 0; left: 0; bottom: 0; right: 0;
            background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.06));
            z-index: 2;
            background-size: 100% 2px, 3px 100%;
            pointer-events: none;
        }

        /* Scanner Laser */
        .laser-scan {
            position: absolute;
            top: 0; left: 0;
            width: 100%; height: 2px;
            background: #ff003c;
            box-shadow: 0 0 10px #ff003c;
            animation: scan 2s linear infinite;
            display: none;
            z-index: 10;
        }
        .scanning .laser-scan { display: block; }
        @keyframes scan {
            0% { top: 0%; opacity: 0; }
            10% { opacity: 1; }
            90% { opacity: 1; }
            100% { top: 100%; opacity: 0; }
        }

        /* Khung Footer chính */
.cyber-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    padding: 10px 20px;
    background: rgba(2, 6, 14, 0.92);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(0, 240, 255, 0.3);
    box-shadow: 0 -2px 15px rgba(0, 240, 255, 0.08);
    font-family: 'Share Tech Mono', 'Courier New', monospace;
    font-size: 12px;
    letter-spacing: 0.5px;
    user-select: none;
}

/* Cột bên trái */
.footer-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

/* Badge DMCA tự dựng chuẩn màu xanh - đen, không lo chết link */
.dmca-link {
    text-decoration: none;
    display: inline-flex;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.dmca-link:hover {
    transform: translateY(-1px);
    box-shadow: 0 0 10px rgba(46, 204, 113, 0.5);
}

.dmca-badge-custom {
    display: inline-flex;
    align-items: center;
    border-radius: 3px;
    overflow: hidden;
    height: 20px;
    border: 1px solid #2ecc71;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 10px;
    font-weight: 800;
}

.dmca-icon {
    background: #2ecc71;
    color: #000000;
    padding: 0 6px;
    line-height: 20px;
    letter-spacing: 0.5px;
}

.dmca-text {
    background: #11141a;
    color: #ffffff;
    padding: 0 6px;
    line-height: 20px;
    letter-spacing: 0.5px;
}

/* Chữ bản quyền */
.copyright {
    color: #5d7589;
}

.copyright .text-cyan {
    color: #00f0ff;
}

/* Cột bên phải */
.footer-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.author-text {
    color: #8da4b6;
}

.sep {
    color: rgba(0, 240, 255, 0.3);
}

.location-tag {
    color: #00e5ff;
    font-weight: 600;
    text-shadow: 0 0 6px rgba(0, 229, 255, 0.4);
}

/* Hiệu ứng cầu vồng cho tác giả */
.highlight-rainbow {
    background: linear-gradient(
        90deg,
        #ff007f,
        #ff9900,
        #00ff66,
        #00e5ff,
        #b000ff,
        #ff007f
    );
    background-size: 300% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
    display: inline-block;
    animation: rainbowMove 3.5s linear infinite;
    filter: drop-shadow(0 0 4px rgba(0, 229, 255, 0.4));
}

@keyframes rainbowMove {
    0% { background-position: 0% 50%; }
    100% { background-position: 300% 50%; }
}

/* ================= FOOTER ================= */
.cyber-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    padding: 10px 24px;
    background: rgba(2, 6, 14, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(0, 240, 255, 0.25);
    box-shadow: 0 -2px 15px rgba(0, 240, 255, 0.08);
    font-family: 'Share Tech Mono', 'Courier New', monospace;
    font-size: 12px;
    margin-top: auto;
    position: relative;
    z-index: 50;
}

.footer-left { display: flex; align-items: center; gap: 12px; }
.dmca-badge-custom {
    display: inline-flex;
    align-items: center;
    border-radius: 3px;
    overflow: hidden;
    height: 19px;
    border: 1px solid #2ecc71;
    font-family: Arial, sans-serif;
    font-size: 9.5px;
    font-weight: 800;
}
.dmca-icon { background: #2ecc71; color: #000; padding: 0 5px; line-height: 19px; }
.dmca-text { background: #11141a; color: #fff; padding: 0 5px; line-height: 19px; }
.copyright { color: #5d7589; }
.text-cyan { color: #00f0ff; }

.footer-center { display: flex; align-items: center; }
.footer-terms-link {
    background: transparent;
    border: 1px solid rgba(0, 240, 255, 0.25);
    color: #7d9cb3;
    font-family: inherit;
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 4px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
}
.footer-terms-link:hover {
    color: #00f0ff;
    border-color: #00f0ff;
    background: rgba(0, 240, 255, 0.08);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
}

.footer-right { display: flex; align-items: center; gap: 8px; color: #64879f; }
.footer-right .sep { color: rgba(0, 240, 255, 0.3); }
.location-tag { color: #00e5ff; font-weight: 600; text-shadow: 0 0 6px rgba(0, 229, 255, 0.4); }

/* ================= MODAL POPUP ================= */
.cyber-modal-overlay {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    background: rgba(0, 0, 0, 0.75) !important;
    backdrop-filter: blur(6px) !important;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 999999 !important;
    padding: 16px;
    box-sizing: border-box;
}

.cyber-modal-box {
    background: #090e17;
    border: 1px solid #00f0ff;
    box-shadow: 0 0 25px rgba(0, 240, 255, 0.25);
    border-radius: 12px;
    width: 100%;
    max-width: 650px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    color: #c9d7e3;
    font-family: system-ui, -apple-system, sans-serif;
    animation: modalPop 0.2s ease-out;
}

@keyframes modalPop {
    from { opacity: 0; transform: scale(0.96); }
    to { opacity: 1; transform: scale(1); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(0, 240, 255, 0.2);
}

.modal-title {
    font-size: 16px;
    font-weight: 700;
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 8px;
}

.modal-subtitle {
    font-size: 12px;
    color: #617d91;
    margin-top: 2px;
}

.modal-close-btn {
    background: transparent;
    border: none;
    color: #8da4b6;
    font-size: 26px;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s;
}
.modal-close-btn:hover { color: #ff0055; }

.modal-body {
    padding: 20px;
    overflow-y: auto;
    font-size: 13.5px;
    line-height: 1.6;
}

.lang-badge {
    background: rgba(0, 240, 255, 0.08);
    border: 1px solid rgba(0, 240, 255, 0.25);
    border-radius: 6px;
    padding: 6px 12px;
    font-weight: 600;
    color: #00f0ff;
    margin-bottom: 10px;
    display: inline-block;
}

.intro-text { margin-bottom: 12px; color: #9bb3c5; }
.rules-title { font-size: 14px; font-weight: 700; color: #e1edf7; margin-bottom: 8px; }
.rules-list {
    padding-left: 20px;
    color: #8da5b8;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.rules-list li strong { color: #d6e5f2; }

/* Thanh cuộn cho Modal */
.modal-body::-webkit-scrollbar { width: 6px; }
.modal-body::-webkit-scrollbar-thumb {
    background: rgba(0, 240, 255, 0.35);
    border-radius: 3px;
}