:root {
    --neon-green: #74e4de;
    --neon-purple: #c586ff;
    --neon-glow: 0 0 15px rgba(116, 228, 222, 0.5);
    --dark-bg: #0a0a0a;
    --card-bg: rgba(15, 15, 15, 0.9);
    --grid-color: rgba(255, 255, 255, 0.05);
}

body {
    background: var(--dark-bg);
    color: #ffffff;
    font-family: 'Rajdhani', sans-serif;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

.invitation-hero {
    padding: 2rem 0 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.invitation-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--neon-green), transparent);
    opacity: 0.5;
}

.invitation-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(116, 228, 222, 0.1);
    border: 1px solid rgba(116, 228, 222, 0.3);
    border-radius: 20px;
    color: var(--neon-green);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 2rem;
}

.invitation-hero h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--neon-green);
    text-shadow: 0 0 20px rgba(116, 228, 222, 0.5);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.invitation-subtitle {
    font-size: 1.25rem;
    color: #9ca3af;
    max-width: 800px;
    margin: 0 auto 3rem;
    line-height: 1.6;
    padding: 1rem;
    background: rgba(116, 228, 222, 0.05);
    border: 1px solid rgba(116, 228, 222, 0.1);
    border-radius: 8px;
    position: relative;
}

.invitation-reward-plan {
    position: relative;
    padding: 4rem 0;
    background: linear-gradient(135deg, rgba(116, 228, 222, 0.05), transparent 30%);
    border-radius: 20px;
    margin-bottom: 3rem;
}

.invitation-reward-plan::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border: 1px solid rgba(116, 228, 222, 0.2);
    border-radius: 20px;
    pointer-events: none;
    z-index: 1;
}

.invitation-plan-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.5rem;
    color: var(--neon-green);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.invitation-plan-subtitle {
    font-size: 1.5rem;
    color: #ffffff;
    margin-bottom: 2rem;
}

.invitation-plan-highlight {
    color: var(--neon-purple);
    text-shadow: 0 0 10px rgba(197, 134, 255, 0.5);
}

.invitation-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.invitation-card {
    background: var(--card-bg);
    border: 1px solid rgba(116, 228, 222, 0.2);
    border-radius: 16px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.invitation-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(116, 228, 222, 0.1), transparent 50%);
    pointer-events: none;
    z-index: 1;
}

.invitation-card:hover {
    transform: translateY(-10px);
    border-color: var(--neon-green);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 20px rgba(116, 228, 222, 0.2);
}

.invitation-card-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(116, 228, 222, 0.1);
    border-radius: 12px;
    color: var(--neon-green);
    font-size: 1.5rem;
}

.invitation-card-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.25rem;
    color: #ffffff;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.invitation-card-content {
    color: #9ca3af;
    line-height: 1.6;
    font-size: 1rem;
}

.invitation-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.invitation-step {
    position: relative;
    padding: 2rem;
    background: rgba(116, 228, 222, 0.05);
    border-radius: 16px;
    border: 1px solid rgba(116, 228, 222, 0.1);
}

.invitation-step-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--neon-green);
    color: var(--dark-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Orbitron', sans-serif;
    font-weight: bold;
    font-size: 1.25rem;
}

.invitation-step-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.25rem;
    color: var(--neon-green);
    margin-bottom: 1rem;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.invitation-step-content {
    color: #9ca3af;
    line-height: 1.6;
    text-align: center;
}

.invitation-register-box {
    max-width: 500px;
    margin: 2rem auto;
    padding: 2.5rem;
    background: var(--card-bg);
    border: 1px solid rgba(116, 228, 222, 0.2);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
}

.invitation-register-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(116, 228, 222, 0.05), transparent 50%);
    pointer-events: none;
    z-index: 1;
}

.invitation-register-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    color: var(--neon-green);
    text-align: center;
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.invitation-form-item {
    margin-bottom: 1.5rem;
    position: relative;
}

.invitation-form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: #9ca3af;
    font-weight: 500;
    font-size: 0.8rem;
    text-align: left;
}

.invitation-form-label red {
    color: #ff4757;
    margin-right: 0.25rem;
}

.invitation-form-input {
    width: 100%;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(116, 228, 222, 0.3);
    border-radius: 8px;
    color: #ffffff;
    font-family: 'Rajdhani', sans-serif;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.invitation-form-input:focus {
    outline: none;
    border-color: var(--neon-green);
    box-shadow: 0 0 0 3px rgba(116, 228, 222, 0.1);
}

.invitation-form-input.error_input {
    border-color: #ff4757;
}

.invitation-form-input-group {
    display: flex;
    gap: 0.5rem;
}

.invitation-verify-btn {
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, var(--neon-green), #00c6ff);
    border: none;
    border-radius: 8px;
    color: var(--dark-bg);
    font-family: 'Orbitron', sans-serif;
    font-weight: 600;
    font-size: 0.7rem;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.invitation-verify-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(116, 228, 222, 0.3);
}

.invitation-verify-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.invitation-form-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.invitation-form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--neon-green);
}

.invitation-form-checkbox label {
    color: #9ca3af;
    font-size: 0.8rem;
}

.invitation-form-checkbox a {
    color: var(--neon-green);
    text-decoration: none;
    transition: color 0.3s ease;
}

.invitation-form-checkbox a:hover {
    color: #ffffff;
    text-decoration: underline;
}

.invitation-submit-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--neon-green), #00c6ff);
    border: none;
    border-radius: 8px;
    color: var(--dark-bg);
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.invitation-submit-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(116, 228, 222, 0.3);
}

.invitation-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.invitation-error-tip {
    display: none;
    color: #ff4757;
    font-size: 0.85rem;
    margin-top: 0.25rem;
    text-align: left;
}

.invitation-form-item.error_input_show_tip .invitation-error-tip {
    display: block;
}

.invitation-email-note {
    font-size: 0.8rem;
    color: var(--neon-green);
    margin-top: 0.25rem;
    text-align: left;
}

#invitation-loading {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--dark-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.invitation-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(116, 228, 222, 0.3);
    border-top-color: var(--neon-green);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes invitation-scan {
    0% {
        top: 0;
    }

    100% {
        top: 100%;
    }
}

.invitation-scan-line {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--neon-green), transparent);
    animation: invitation-scan 4s linear infinite;
    pointer-events: none;
    z-index: 2;
}

.invitation-corner {
    position: absolute;
    width: 20px;
    height: 20px;
    opacity: 0.5;
}

.invitation-corner-top-left {
    top: 0;
    left: 0;
    border-top: 2px solid var(--neon-green);
    border-left: 2px solid var(--neon-green);
    border-top-left-radius: 20px;
}

.invitation-corner-top-right {
    top: 0;
    right: 0;
    border-top: 2px solid var(--neon-green);
    border-right: 2px solid var(--neon-green);
    border-top-right-radius: 20px;
}

.invitation-corner-bottom-left {
    bottom: 0;
    left: 0;
    border-bottom: 2px solid var(--neon-green);
    border-left: 2px solid var(--neon-green);
    border-bottom-left-radius: 20px;
}

.invitation-corner-bottom-right {
    bottom: 0;
    right: 0;
    border-bottom: 2px solid var(--neon-green);
    border-right: 2px solid var(--neon-green);
    border-bottom-right-radius: 20px;
}

@media (max-width: 1200px) {
    .invitation-hero h1 {
        font-size: 3rem;
    }

    .invitation-container {
        padding: 0 1rem;
    }
}

@media (max-width: 1024px) {
    .invitation-hero h1 {
        font-size: 2.5rem;
    }

    .invitation-subtitle {
        font-size: 1.125rem;
        padding: 0.8rem;
    }

    .invitation-plan-title {
        font-size: 2rem;
    }

    .invitation-plan-subtitle {
        font-size: 1.25rem;
    }
}

@media (max-width: 768px) {
    .invitation-hero {
        padding: 4rem 0 3rem;
    }

    .invitation-hero h1 {
        font-size: 2rem;
    }

    .invitation-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .invitation-card-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .invitation-steps {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .invitation-register-box {
        padding: 2rem;
        margin: 1.5rem auto;
    }

    .invitation-form-input-group {
        flex-direction: column;
    }

    .invitation-verify-btn {
        width: 100%;
    }

    .invitation-status-badge {
        font-size: 0.75rem;
        padding: 0.375rem 0.75rem;
    }
}

@media (max-width: 480px) {
    .invitation-hero {
        padding: 3rem 0 2rem;
    }

    .invitation-hero h1 {
        font-size: 1.75rem;
    }

    .invitation-register-box {
        padding: 1.5rem;
    }

    .invitation-register-title {
        font-size: 1.5rem;
    }

    .invitation-form-input {
        padding: 0.875rem;
        font-size: 0.95rem;
    }

    .invitation-submit-btn {
        padding: 0.875rem;
        font-size: 1rem;
    }

    .invitation-card {
        padding: 1.5rem;
    }

    .invitation-step {
        padding: 1.5rem;
    }
}