.invitations-hero {
    position: relative;
    padding: 10rem 2rem 4rem;
    text-align: center;
    z-index: 1;
    overflow: hidden;
}

.invitations-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at 30% 30%, rgba(0, 240, 255, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 60%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
    z-index: -1;
}

.invitations-hero-content {
    max-width: 700px;
    margin: 0 auto;
}

.invitations-hero .section-tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.7rem;
    letter-spacing: 5px;
    color: var(--accent-cyan);
    margin-bottom: 1rem;
    opacity: 0.8;
}

.invitations-hero .section-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #fff 0%, #a0a0ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.invitations-hero .section-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.invitations-section {
    position: relative;
    padding: 2rem 2rem 6rem;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    min-height: 300px;
}

.invitations-empty {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.invitations-empty svg {
    margin-bottom: 1rem;
    opacity: 0.4;
}

.invitations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
}

.invitation-card {
    background: var(--glass-bg);
    border: var(--glass-border);
    border-radius: 16px;
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition);
}

.invitation-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(0, 240, 255, 0.1);
}

.invitation-cover {
    position: relative;
    height: 200px;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.3);
}

.invitation-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.invitation-card:hover .invitation-cover img {
    transform: scale(1.05);
}

.invitation-cover-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.15);
}

.invitation-distance-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(0, 240, 255, 0.2);
    backdrop-filter: blur(8px);
    color: var(--accent-cyan);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid rgba(0, 240, 255, 0.3);
}

.invitation-body {
    padding: 1.25rem;
}

.invitation-name {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.invitation-info {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: 1rem;
}

.invitation-info-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.invitation-info-row svg {
    flex-shrink: 0;
    color: var(--accent-cyan);
    opacity: 0.7;
}

.invitation-join-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.7rem 1.5rem;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
    color: #000;
    font-weight: 600;
    font-size: 0.9rem;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    text-decoration: none;
    transition: opacity var(--transition), transform var(--transition);
}

.invitation-join-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.invitation-detail-section {
    position: relative;
    padding: 8rem 2rem 4rem;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
}

.detail-two-col {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 1.5rem;
    align-items: start;
}

.detail-col-left,
.detail-col-right {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.detail-col-left .detail-module,
.detail-col-right .detail-module {
    margin-bottom: 1.5rem;
}

.detail-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--accent-cyan);
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    opacity: 0.8;
    transition: opacity var(--transition);
}

.detail-back-link:hover {
    opacity: 1;
}

.detail-module {
    background: var(--glass-bg);
    border: var(--glass-border);
    border-radius: 16px;
    padding: 1.75rem;
    margin-bottom: 1.5rem;
    position: relative;
    overflow: hidden;
}

.detail-module::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.3), transparent);
}

.module-title {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.module-title svg {
    flex-shrink: 0;
    opacity: 0.85;
}

.detail-header-module {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    padding: 2rem;
}

.detail-cover {
    width: 280px;
    flex-shrink: 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.detail-cover img {
    width: 100%;
    display: block;
    border-radius: 12px;
}

.detail-header-info {
    flex: 1;
}

.detail-title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    background: linear-gradient(135deg, #fff 0%, #a0a0ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.25rem;
}

.detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
}

.detail-meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    background: rgba(255, 255, 255, 0.03);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.detail-meta-item svg {
    color: var(--accent-cyan);
    opacity: 0.7;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.25rem;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.04);
}

.info-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.info-value {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 500;
}

.images-viewer {
    position: relative;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 12px;
    overflow: hidden;
    min-height: 300px;
    max-height: 500px;
}

.viewer-viewport {
    width: 100%;
    height: 400px;
    overflow: hidden;
    cursor: grab;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
    -webkit-user-select: none;
}

.viewer-viewport:active {
    cursor: grabbing;
}

.viewer-viewport img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transform-origin: center center;
    transition: transform 0.1s ease-out;
    pointer-events: none;
}

.viewer-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition);
    z-index: 2;
}

.viewer-arrow:hover {
    background: rgba(0, 240, 255, 0.3);
}

.viewer-prev {
    left: 12px;
}

.viewer-next {
    right: 12px;
}

.viewer-controls {
    position: absolute;
    bottom: 12px;
    right: 12px;
    display: flex;
    gap: 6px;
    z-index: 2;
}

.viewer-controls button {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition);
}

.viewer-controls button:hover {
    background: rgba(0, 240, 255, 0.3);
}

.viewer-counter {
    position: absolute;
    bottom: 12px;
    left: 12px;
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    z-index: 2;
}

.slots-selected-info {
    background: rgba(0, 240, 255, 0.08);
    border: 1px solid rgba(0, 240, 255, 0.25);
    border-radius: 10px;
    padding: 0.75rem 1rem;
    margin-bottom: 1.25rem;
    color: var(--accent-cyan);
    font-size: 0.9rem;
}

.slots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 10px;
}

.slots-loading,
.slots-empty,
.slots-error {
    grid-column: 1 / -1;
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.slot-btn {
    position: relative;
    padding: 12px 6px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    white-space: nowrap;
}

.slot-btn:hover:not(.slot-occupied) {
    background: rgba(0, 240, 255, 0.12);
    border-color: rgba(0, 240, 255, 0.4);
    transform: translateY(-1px);
}

.slot-btn.slot-selected {
    background: rgba(0, 240, 255, 0.2);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    box-shadow: 0 0 16px rgba(0, 240, 255, 0.15), inset 0 0 12px rgba(0, 240, 255, 0.05);
}

.slot-btn.slot-occupied {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.25);
    color: #ef4444;
    cursor: not-allowed;
    opacity: 0.65;
}

.slot-status {
    font-size: 0.6rem;
    color: #ef4444;
    letter-spacing: 0.5px;
}

.register-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 340px;
    margin: 0 auto;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-field label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-field label .required {
    color: #ef4444;
}

.form-field input {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 0.7rem 0.9rem;
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: border-color var(--transition), box-shadow var(--transition);
    box-sizing: border-box;
}

.form-field input:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
}

.form-field input::placeholder {
    color: rgba(255, 255, 255, 0.25);
}

.register-actions {
    display: flex;
    justify-content: center;
    padding-top: 0.5rem;
}

.register-submit-btn {
    width: 100%;
    padding: 0.8rem 2rem;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
    color: #000;
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
}

.register-submit-btn:hover:not(:disabled) {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(0, 240, 255, 0.25);
}

.register-submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.register-message {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    text-align: center;
}

.register-message.message-success {
    background: rgba(34, 197, 94, 0.15);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #22c55e;
}

.register-message.message-error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

.reglist-table-wrapper {
    overflow-x: auto;
}

.reglist-loading,
.reglist-empty,
.reglist-error {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.reglist-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.9rem;
}

.reglist-table th {
    text-align: left;
    padding: 0.85rem 1rem;
    background: rgba(0, 240, 255, 0.04);
    color: var(--accent-cyan);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    border-bottom: 1px solid rgba(0, 240, 255, 0.15);
}

.reglist-table th:first-child {
    border-radius: 8px 0 0 0;
}

.reglist-table th:last-child {
    border-radius: 0 8px 0 0;
}

.reglist-table td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
}

.reglist-table tbody tr:hover {
    background: rgba(0, 240, 255, 0.03);
}

.reglist-table tbody tr:last-child td {
    border-bottom: none;
}

.loading-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--accent-cyan);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 0.5rem;
}

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

@media (max-width: 768px) {
    .invitations-grid {
        grid-template-columns: 1fr;
    }

    .detail-two-col {
        grid-template-columns: 1fr;
    }

    .detail-header-module {
        flex-direction: column;
    }

    .detail-cover {
        width: 100%;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }

    .viewer-viewport {
        height: 280px;
    }

    .slots-grid {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
        gap: 8px;
    }

    .slot-btn {
        font-size: 0.8rem;
        padding: 10px 4px;
    }

    .viewer-arrow {
        width: 32px;
        height: 32px;
    }

    .register-form {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .invitations-section,
    .invitation-detail-section {
        padding: 7rem 1rem 3rem;
    }

    .detail-module {
        padding: 1rem;
    }

    .viewer-viewport {
        height: 220px;
    }
}