* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: radial-gradient(circle, #252836 0%, #11141a 100%);
    color: #ffffff;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 650px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 10px;
}

.glow-text {
    font-size: 2.2rem;
    font-weight: 800;
    color: #4cd137;
    letter-spacing: 2px;
    text-shadow: 0 0 10px rgba(76, 209, 55, 0.5);
}

.subtitle {
    color: #a4b0be;
    font-size: 1rem;
    margin-top: 5px;
}

/* Card Style */
.card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.card h2 {
    font-size: 1.3rem;
    margin-bottom: 16px;
    color: #f5f6fa;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Khối IP */
.ip-box {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.3);
    padding: 12px 18px;
    border-radius: 8px;
    margin-bottom: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.ip-info .label {
    color: #e1b12c;
    font-weight: bold;
    margin-right: 8px;
}

.ip-info .ip-text {
    font-family: monospace;
    font-size: 1.1rem;
    color: #00d2d3;
}

/* Nút bấm */
.btn {
    border: none;
    outline: none;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: bold;
    border-radius: 6px;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-copy {
    background-color: #2f3640;
    color: #f5f6fa;
    padding: 8px 14px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-copy:hover {
    background-color: #4cd137;
    color: #000;
}

/* Khối hỗ trợ */
.guide-text {
    color: #dcdde1;
    line-height: 1.6;
    margin-bottom: 20px;
}

.btn-discord {
    background-color: #5865F2;
    color: #ffffff;
    padding: 14px 24px;
    border-radius: 8px;
    display: flex;
    justify-content: center;
    text-align: center;
    font-size: 1.05rem;
}

.btn-discord:hover {
    background-color: #4752c4;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(88, 101, 242, 0.4);
}

/* Footer */
.footer {
    text-align: center;
    padding: 16px;
    font-size: 0.95rem;
}

.footer strong {
    color: #4cd137;
}

.copyright {
    color: #718093;
    font-size: 0.8rem;
    margin-top: 8px;
}

/* Toast popup */
#toast {
    visibility: hidden;
    min-width: 220px;
    background-color: #4cd137;
    color: #000000;
    font-weight: bold;
    text-align: center;
    border-radius: 50px;
    padding: 12px 20px;
    position: fixed;
    z-index: 99;
    bottom: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
    opacity: 0;
    transition: opacity 0.3s, bottom 0.3s;
}

#toast.show {
    visibility: visible;
    opacity: 1;
    bottom: 50px;
}