/* SVG Icon Styles */
.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.5em;
    height: 1.5em;
    flex-shrink: 0;
}

.icon svg {
    width: 100%;
    height: 100%;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
}

.icon-sm {
    width: 1em;
    height: 1em;
}

.icon-md {
    width: 1.5em;
    height: 1.5em;
}

.icon-lg {
    width: 2em;
    height: 2em;
}

.icon-xl {
    width: 2.5em;
    height: 2.5em;
}

.icon-2xl {
    width: 3em;
    height: 3em;
}

.icon-3xl {
    width: 4em;
    height: 4em;
}

/* Topic Card Icons */
.topic-icon-svg {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-lg);
    color: var(--primary-400);
}

/* Date Card Icons */
.date-icon-svg {
    width: 40px;
    height: 40px;
    color: var(--primary-400);
    flex-shrink: 0;
}

.date-card.highlight .date-icon-svg {
    color: var(--gray-950);
}

/* Logo Icon */
.logo-icon-svg {
    width: 28px;
    height: 28px;
    color: var(--primary-400);
}

/* Speaker Card with Image */
.speaker-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.speaker-card-enhanced {
    padding: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: var(--transition-base);
    cursor: pointer;
}

.speaker-card-enhanced:hover {
    border-color: var(--primary-500);
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow);
}

.speaker-image {
    width: 100%;
    height: 280px;
    object-fit: cover;
    object-position: top center;
    background: var(--gradient-primary);
    display: block;
}

.speaker-image-placeholder {
    width: 100%;
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 700;
    color: var(--primary-400);
}

.speaker-info {
    padding: var(--spacing-xl);
}

.speaker-info .speaker-name {
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.speaker-info .speaker-affiliation {
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.5;
}

.speaker-view-more {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--primary-400);
    font-weight: 500;
    font-size: 0.875rem;
    margin-top: var(--spacing-md);
    opacity: 0;
    transform: translateX(-10px);
    transition: var(--transition-base);
}

.speaker-card-enhanced:hover .speaker-view-more {
    opacity: 1;
    transform: translateX(0);
}

/* Speaker Detail Page */
.speaker-detail-header {
    padding: calc(var(--spacing-4xl) + 80px) 0 var(--spacing-3xl);
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}

.speaker-detail-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-glow);
    pointer-events: none;
}

.speaker-detail-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
    position: relative;
    z-index: 1;
}

.speaker-detail-image {
    width: 300px;
    height: 380px;
    object-fit: cover;
    object-position: top center;
    border-radius: var(--radius-xl);
    border: 3px solid var(--border-primary);
    box-shadow: var(--shadow-glow);
}

.speaker-detail-image-placeholder {
    width: 300px;
    height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 3px solid var(--border-primary);
    font-family: var(--font-display);
    font-size: 6rem;
    font-weight: 700;
    color: var(--primary-400);
}

.speaker-detail-info h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-300) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-md);
}

.speaker-detail-title {
    color: var(--primary-400);
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
}

.speaker-detail-affiliation {
    color: var(--text-secondary);
    font-size: 1.125rem;
    line-height: 1.8;
}

.speaker-detail-affiliation strong {
    color: var(--text-primary);
}

.speaker-bio-section {
    padding: var(--spacing-4xl) 0;
}

.speaker-bio-card {
    padding: var(--spacing-2xl);
    background: var(--bg-card);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-xl);
}

.speaker-bio-card h2 {
    color: var(--primary-400);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.speaker-bio-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    margin-bottom: var(--spacing-xl);
    transition: var(--transition-base);
}

.back-link:hover {
    color: var(--primary-400);
}

@media (max-width: 768px) {
    .speaker-detail-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .speaker-detail-image,
    .speaker-detail-image-placeholder {
        width: 200px;
        height: 260px;
        margin: 0 auto;
    }
}