.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease-out;
}

.modal-content {
    background: linear-gradient(145deg, #1a1a1a 0%, #0a0a0a 100%);
    border: 1px solid rgba(0, 255, 153, 0.2);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 255, 153, 0.05);
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(16px);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    font-family: var(--nexus-font-sans);
    color: var(--nexus-text);
    font-size: 1.5rem;
}

.close-btn {
    background: none;
    border: none;
    color: var(--nexus-text-muted, #888);
    cursor: pointer;
    transition: color 0.2s;
}

.close-btn:hover {
    color: var(--nexus-neon, #00ffaa);
    transform: rotate(90deg);
}

.modal-body {
    min-height: 250px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* Upload State */
.upload-state {
    flex: 1;
    display: flex;
}

.drop-zone {
    flex: 1;
    border: 2px dashed rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.02);
    position: relative;
}

.drop-zone:hover, .upload-state.drag-over .drop-zone {
    border-color: var(--nexus-accent, #00ffaa);
    background: rgba(var(--nexus-accent-rgb, 0, 255, 170), 0.05);
}

.drop-zone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--nexus-text-muted, #888);
    pointer-events: none;
}

.drop-zone-content svg {
    color: var(--nexus-accent, #00ffaa);
    opacity: 0.8;
}

.drop-zone-content p {
    margin: 0;
    font-size: 1.1rem;
    color: var(--nexus-text);
}

.drop-zone ::deep .file-input-cover {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    z-index: 10;
}

/* Parsing and Ingesting States */
.parsing-state,
.ingesting-state {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.03);
    position: relative;
    overflow: hidden;
}

.shimmer::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.05), transparent);
    animation: shimmer 2s infinite;
}

.shimmer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(0, 255, 153, 0.1);
    border-top-color: var(--nexus-neon, #00ffaa);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    filter: drop-shadow(0 0 8px rgba(0, 255, 153, 0.3));
}

.parsing-state p,
.ingesting-state p {
    color: var(--nexus-text);
    font-family: var(--nexus-font-mono, monospace);
    font-size: 0.9rem;
    letter-spacing: 1px;
}

/* Metadata State */
.metadata-state {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.metadata-info {
    text-align: center;
}

.metadata-info h3 {
    margin: 0 0 0.5rem 0;
    color: var(--nexus-text);
    font-size: 1.25rem;
}

.metadata-info .author {
    margin: 0;
    color: var(--nexus-text-muted, #888);
}

.actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
}

.btn {
    font-family: var(--nexus-font-sans);
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-transform: uppercase;
}

.btn-primary {
    background: var(--nexus-neon, #00ffaa);
    color: #050505;
    box-shadow: 0 4px 12px rgba(var(--nexus-accent-rgb, 0, 255, 170), 0.2);
}

.btn-primary:hover {
    background: #00e699;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--nexus-accent-rgb, 0, 255, 170), 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.03);
    color: var(--nexus-text);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.btn-secondary:active {
    transform: translateY(0);
}

/* Verification State */
.verification-state {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    animation: fadeIn 0.4s ease-out;
}

.verification-layout {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 2rem;
    align-items: start;
}

.cover-preview {
    width: 140px;
    height: 200px;
    border-radius: 12px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    position: relative;
}

.cover-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.glowing-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
    position: relative;
    overflow: hidden;
}

.glowing-placeholder::after {
    content: '';
    position: absolute;
    width: 150%;
    height: 150%;
    background: radial-gradient(circle, var(--nexus-neon-alpha, rgba(0, 255, 153, 0.15)) 0%, transparent 70%);
    animation: pulseGlow 4s infinite alternate;
}

.glowing-placeholder svg {
    color: var(--nexus-neon, #00ffaa);
    opacity: 0.5;
    z-index: 1;
    filter: drop-shadow(0 0 10px var(--nexus-neon-alpha-deep, rgba(0, 255, 153, 0.3)));
}

.verification-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--nexus-text-muted, #888);
    font-weight: 600;
}

.form-input {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    color: var(--nexus-text);
    font-family: var(--nexus-font-sans);
    transition: all 0.3s;
}

.form-input:focus {
    outline: none;
    border-color: var(--nexus-neon, #00ffaa);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 0 15px rgba(0, 255, 153, 0.1);
}

.error-message {
    margin-top: 1rem;
    color: var(--nexus-error, #ff5555);
    text-align: center;
    font-size: 0.9rem;
    padding: 0.75rem;
    background: var(--nexus-error-alpha, rgba(255, 85, 85, 0.1));
    border-radius: 8px;
    border: 1px solid var(--nexus-error-alpha-deep, rgba(255, 85, 85, 0.2));
}

@keyframes pulseGlow {
    from { transform: scale(1); opacity: 0.5; }
    to { transform: scale(1.2); opacity: 0.8; }
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    filter: grayscale(1);
}

.btn-loading {
    position: relative;
    color: transparent !important;
}

.btn-loading::after {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--nexus-neon, #00ffaa);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    filter: drop-shadow(0 0 4px var(--nexus-neon, #00ffaa));
}

/* Indexing State */
.indexing-state {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: inset 0 0 12px rgba(255, 255, 255, 0.02);
    position: relative;
    overflow: hidden;
    padding: 2rem;
    animation: fadeIn 0.4s ease-out;
}

.indexing-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 100%;
    gap: 1.25rem;
}

.indexing-content h3 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--nexus-neon, #00ffaa);
    text-shadow: 0 0 10px rgba(0, 255, 153, 0.2);
    letter-spacing: 0.5px;
}

.status-msg {
    margin: 0;
    font-size: 0.9rem;
    color: var(--nexus-text-muted, #888);
    min-height: 2.5rem;
    line-height: 1.4;
}

.progress-bar-container {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--nexus-neon, #00ffaa) 0%, #00b3ff 100%);
    box-shadow: 0 0 10px rgba(0, 255, 153, 0.4);
    border-radius: 4px;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.percent {
    font-family: var(--nexus-font-mono, monospace);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--nexus-text);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes shimmer {
    100% { left: 200%; }
}

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

@media (prefers-reduced-motion: reduce) {
    .modal-backdrop,
    .shimmer::before,
    .spinner {
        animation: none !important;
        transition: none !important;
    }
}