* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
    min-height: 100%;
}

body {
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 45%, #312e81 100%);
    color: #ffffff;
    position: relative;
    min-height: 100vh;
}

.page-bg {
    position: fixed;
    inset: 0;
    background:
        radial-gradient(circle at top left, rgba(59, 130, 246, 0.35), transparent 35%),
        radial-gradient(circle at bottom right, rgba(168, 85, 247, 0.28), transparent 30%);
    pointer-events: none;
}

.container {
    position: relative;
    z-index: 1;
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.card {
    width: 100%;
    max-width: 720px;
    background: rgba(255, 255, 255, 0.10);
    border: 1px solid rgba(255, 255, 255, 0.14);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 28px;
    padding: 32px 24px;
    box-shadow: 0 20px 70px rgba(0, 0, 0, 0.35);
}

.badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: #dbeafe;
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 13px;
    margin-bottom: 14px;
}

h1 {
    margin: 0 0 10px 0;
    font-size: 34px;
    line-height: 1.1;
}

.subtitle {
    margin: 0 0 28px 0;
    color: #dbeafe;
    line-height: 1.6;
    font-size: 15px;
}

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.field {
    margin-bottom: 16px;
}

.field label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: bold;
    color: #e5eefc;
}

.field input {
    width: 100%;
    border: 1px solid rgba(255,255,255,0.16);
    background: rgba(255,255,255,0.12);
    color: #ffffff;
    border-radius: 16px;
    padding: 15px 16px;
    font-size: 16px;
    outline: none;
    transition: 0.2s ease;
}

.field input::placeholder,
.partecipante input::placeholder {
    color: rgba(255,255,255,0.65);
}

.field input:focus,
.partecipante input:focus {
    border-color: rgba(96, 165, 250, 0.9);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.18);
}

.field small {
    display: block;
    margin-top: 8px;
    color: #cbd5e1;
    font-size: 12px;
}

.participants-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin: 22px 0 14px 0;
}

.participants-header h2 {
    margin: 0;
    font-size: 20px;
}

.add-btn,
.remove-btn,
.submit-btn,
.admin-btn,
.logout-btn {
    border: 0;
    cursor: pointer;
    border-radius: 14px;
    transition: transform 0.15s ease, opacity 0.15s ease;
    text-decoration: none;
    display: inline-block;
}

.add-btn:hover,
.remove-btn:hover,
.submit-btn:hover,
.admin-btn:hover,
.logout-btn:hover {
    transform: translateY(-1px);
    opacity: 0.95;
}

.add-btn,
.admin-btn {
    padding: 12px 16px;
    background: linear-gradient(135deg, #38bdf8, #2563eb);
    color: #fff;
    font-weight: bold;
    white-space: nowrap;
}

.partecipante {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 12px;
    margin-bottom: 12px;
    padding: 14px;
    border-radius: 18px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.10);
}

.partecipante input {
    width: 100%;
    border: 1px solid rgba(255,255,255,0.16);
    background: rgba(255,255,255,0.12);
    color: #fff;
    border-radius: 14px;
    padding: 14px 14px;
    font-size: 15px;
    outline: none;
}

.remove-btn,
.logout-btn {
    padding: 12px 16px;
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: #fff;
    font-weight: bold;
}

.checkbox-wrap {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin: 22px 0;
    color: #dbeafe;
    line-height: 1.5;
    font-size: 14px;
}

.checkbox-wrap input {
    margin-top: 4px;
    transform: scale(1.15);
}

.submit-btn {
    width: 100%;
    padding: 16px 20px;
    background: linear-gradient(135deg, #8b5cf6, #2563eb);
    color: #fff;
    font-size: 17px;
    font-weight: bold;
    box-shadow: 0 16px 35px rgba(37, 99, 235, 0.30);
}

.admin-table-wrap {
    overflow-x: auto;
    margin-top: 20px;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(255,255,255,0.06);
    border-radius: 18px;
    overflow: hidden;
}

.admin-table th,
.admin-table td {
    padding: 14px 12px;
    text-align: left;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    vertical-align: top;
}

.admin-table th {
    color: #fff;
    background: rgba(255,255,255,0.08);
}

.admin-table td {
    color: #dbeafe;
}

.login-box {
    max-width: 420px;
    margin: 0 auto;
}

.ticket-box {
    text-align: center;
}

.ticket-qr {
    margin: 22px 0;
}

.ticket-qr img {
    max-width: 240px;
    width: 100%;
    border-radius: 18px;
    background: #fff;
    padding: 12px;
}

.muted {
    color: #cbd5e1;
    font-size: 13px;
}

@media (max-width: 768px) {
    .card {
        padding: 24px 18px;
        border-radius: 22px;
    }

    h1 {
        font-size: 28px;
    }

    .grid,
    .partecipante {
        grid-template-columns: 1fr;
    }

    .participants-header {
        flex-direction: column;
        align-items: stretch;
    }

    .add-btn,
    .remove-btn {
        width: 100%;
    }
}