.dashboard-container {
    min-height: 100%;
    display: flex;
    flex-direction: column;
    animation: fade-in 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fade-in {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Profile Header --- */
.profile-header {
    position: relative;
    padding: 4rem 2rem 3rem;
    display: flex;
    justify-content: center;
    overflow: hidden;
    background: #0D0D0D;
}

.header-grid-bg {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    background-position: center;
    mask-image: radial-gradient(circle at center, black, transparent 80%);
}

.profile-visual {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.avatar-wrapper {
    position: relative;
    width: 120px;
    height: 120px;
}

.profile-img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid #1a1a1a;
    position: relative;
    z-index: 2;
    background: #222;
}

.avatar-glow {
    position: absolute;
    inset: -5px;
    border-radius: 50%;
    background: var(--nexus-neon);
    filter: blur(20px);
    opacity: 0.4;
    z-index: 1;
    animation: pulse-glow 3s infinite;
}

@keyframes pulse-glow {
    0%, 100% { transform: scale(1); opacity: 0.4; }
    50% { transform: scale(1.05); opacity: 0.6; }
}

.username {
    font-family: var(--nexus-font-sans);
    font-size: 1.25rem;
    font-weight: 500;
    color: #ffffff;
    letter-spacing: 1px;
    text-transform: lowercase;
}

.username::before {
    content: '[';
    color: var(--nexus-neon);
    margin-right: 4px;
}

.username::after {
    content: ']';
    color: var(--nexus-neon);
    margin-left: 4px;
}

.status-pills {
    display: flex;
    gap: 1.5rem;
    margin-top: 0.5rem;
}

.status-pill {
    padding: 0.6rem 1.25rem;
    background: rgba(0, 255, 153, 0.05);
    border: 1px solid rgba(0, 255, 153, 0.3);
    border-radius: 100px;
    display: flex;
    gap: 0.5rem;
    font-size: 0.9rem;
    box-shadow: 0 0 15px rgba(0, 255, 153, 0.1);
}

.pill-label { color: #A0A0A0; }
.pill-value { color: #ffffff; font-weight: 600; }

/* --- Dashboard Content --- */
.dashboard-content {
    padding: 3rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.section-title {
    font-family: var(--nexus-font-serif);
    font-size: 2rem;
    margin-bottom: 2rem;
    color: #ffffff;
}

.main-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 2rem;
}

.glass-panel {
    background: rgba(20, 20, 20, 0.8); /* Fallback for browsers without backdrop-filter */
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 1.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@supports (backdrop-filter: blur(10px)) {
    .glass-panel {
        background: rgba(255, 255, 255, 0.03);
        backdrop-filter: blur(10px);
    }
}

.glass-panel:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(0, 255, 153, 0.2);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* Reading Card */
.reading-card {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.reading-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #E0E0E0;
    margin: 0;
}

.card-body {
    display: flex;
    gap: 2rem;
}

.reading-thumb {
    width: 120px;
    flex-shrink: 0;
}

.reading-thumb img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.reading-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.progress-section {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.chapter-label {
    font-size: 0.85rem;
    color: #A0A0A0;
}

.progress-container {
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    position: relative;
}

.progress-bar {
    height: 100%;
    background: var(--nexus-neon);
    border-radius: 4px;
    position: relative;
    box-shadow: 0 0 10px rgba(0, 255, 153, 0.3);
}

.progress-bubble {
    position: absolute;
    right: -20px;
    top: -30px;
    background: var(--nexus-neon);
    color: #000;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 700;
}

.progress-detail {
    font-size: 0.8rem;
    color: #666;
}

.reading-desc {
    font-size: 0.85rem;
    line-height: 1.6;
    color: #888;
    margin: 0;
}

.card-actions {
    display: flex;
    gap: 1rem;
}

/* Secondary Grid Items */
.secondary-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.panel-header h4 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: #E0E0E0;
}

/* Graph Placeholder */
.graph-placeholder {
    height: 180px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.graph-node {
    position: absolute;
    border-radius: 50%;
    background: #333;
    border: 1px solid rgba(255,255,255,0.1);
}

.graph-node.central {
    width: 40px;
    height: 40px;
    background: var(--nexus-neon);
    box-shadow: 0 0 20px rgba(0, 255, 153, 0.4);
}

.graph-node.satellite {
    width: 16px;
    height: 16px;
    transform: rotate(var(--angle)) translateY(var(--dist));
    background: rgba(0, 255, 153, 0.4);
    border: 1px solid var(--nexus-neon);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.graph-node.satellite:hover {
    background: var(--nexus-neon);
    box-shadow: 0 0 15px var(--nexus-neon);
    transform: rotate(var(--angle)) translateY(var(--dist)) scale(1.3);
}

.active-node-label {
    position: absolute;
    bottom: 20px;
    right: 20px;
    padding: 4px 12px;
    background: rgba(0, 255, 153, 0.1);
    border: 1px solid var(--nexus-neon);
    border-radius: 4px;
    font-size: 0.7rem;
    color: var(--nexus-neon);
    font-weight: 700;
}

/* Quiz Preview */
.quiz-preview {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.question {
    font-size: 0.95rem;
    color: #E0E0E0;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.quiz-option {
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    font-size: 0.9rem;
    display: flex;
    gap: 0.75rem;
    cursor: pointer;
}

.quiz-option.active {
    background: rgba(0, 255, 153, 0.05);
    border-color: var(--nexus-neon);
    color: var(--nexus-neon);
}

.option-letter {
    font-weight: 700;
}

/* Buttons */
.btn-nexus {
    padding: 0.75rem 1.25rem;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.btn-nexus.primary {
    background: var(--nexus-neon);
    color: #000;
}

.btn-nexus.secondary {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-nexus:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
}

/* Empty State */
.empty-state {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 1rem;
    text-align: center;
    gap: 1.5rem !important;
}

.empty-icon {
    opacity: 0.3;
    color: var(--nexus-neon);
    filter: drop-shadow(0 0 10px rgba(0, 255, 153, 0.2));
}

.empty-state .reading-info {
    align-items: center;
    max-width: 400px;
}

@media (max-width: 1024px) {
    .main-grid {
        grid-template-columns: 1fr;
    }
}

/* --- Quiz History Styling --- */
.quiz-history-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.quiz-history-item {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 1rem;
    transition: all 0.2s ease;
}

.quiz-history-item:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.1);
}

.quiz-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.quiz-topic {
    font-size: 0.95rem;
    font-weight: 500;
    color: #ffffff;
}

.quiz-item-meta {
    display: flex;
    font-size: 0.75rem;
    color: #666666;
}

.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success {
    background: rgba(0, 255, 153, 0.1);
    color: var(--nexus-neon);
    border: 1px solid rgba(0, 255, 153, 0.3);
}

.badge-warning {
    background: rgba(255, 170, 0, 0.1);
    color: #ffa800;
    border: 1px solid rgba(255, 170, 0, 0.3);
}

.badge-danger {
    background: rgba(255, 50, 50, 0.1);
    color: #ff3232;
    border: 1px solid rgba(255, 50, 50, 0.3);
}

.empty-quiz-state {
    text-align: center;
    padding: 2rem 1rem;
}

.empty-quiz-state .sub-text {
    font-size: 0.8rem;
    color: #666666;
    margin-top: 0.5rem;
}

/* --- Concept Detail Toast for Dashboard --- */
.concept-detail-toast {
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    min-height: 80px;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.concept-detail-toast.placeholder {
    opacity: 0.5;
}

.concept-type {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--nexus-neon);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.concept-content {
    font-size: 0.85rem;
    line-height: 1.4;
    color: #E0E0E0;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}