:root {
    --c-black-bean: #2D0C0C;
    --c-white: #FFFFFF;
    --c-platinum: #DBD8D8;
    --c-onyx: #2E2E2E;
    --c-rosetaupe: #C3B5A7;
    --c-firebrick: #7E0101;
    --c-auburn: #6F0505;
    --c-bg-light: #F8FAFC;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Open Sans', sans-serif;
    color: var(--c-onyx);
    /* Consistent "Chemical Haze" Effect */
    background-color: #fdfbf9;
    background-image: 
        radial-gradient(circle at 0% 0%, rgba(195, 181, 167, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 90% 10%, rgba(126, 1, 1, 0.05) 0%, transparent 40%);
    background-attachment: fixed;
    min-height: 100vh;
}

.app {
    max-width: 1300px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* --- Back Navigation --- */
.back-nav {
    margin-bottom: 2rem;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--c-firebrick);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.75rem 1.5rem;
    background: white;
    border-radius: 50px;
    border: 1.5px solid var(--c-platinum);
    transition: all 0.3s ease;
}

.back-link:hover {
    background: var(--c-firebrick);
    color: white;
    border-color: var(--c-firebrick);
    transform: translateX(-5px);
}

.back-link i {
    font-size: 0.9rem;
}

/* --- Header --- */
.header {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, white 0%, #fef2f2 100%);
    color: var(--c-white);
    border-radius: 2rem;
    margin-bottom: 50px;
    box-shadow: 0 10px 30px rgba(45, 12, 12, 0.1);
    border-left: 8px solid var(--c-firebrick);
}

.header h1 {
    font-family: 'Montserrat', sans-serif;
    margin: 0;
    color: var(--c-black-bean);
    font-size: 2.5em;
    text-transform: uppercase;
    letter-spacing: -1px;
}

.header p {
    margin: 15px auto 0;
    font-size: 1.1em;
    color: var(--c-onyx);
    max-width: 800px;
    line-height: 1.6;
    font-style: italic;
}

/* --- Column Layout --- */
.sections {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.column {
    display: flex;
    flex-direction: column;
}

.column-header {
    font-family: 'Montserrat', sans-serif;
    text-align: center;
    background: var(--c-firebrick);
    color: var(--c-white);
    padding: 15px 20px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 25px;
    box-shadow: 0 4px 12px rgba(126, 1, 1, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.column-header i {
    font-size: 1.1rem;
}

.column-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* --- Person Cards --- */
.person-row {
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 1.5px solid var(--c-platinum);
    border-radius: 1.5rem;
    padding: 25px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.person-row:hover {
    transform: translateY(-5px);
    border-color: var(--c-firebrick);
    box-shadow: 0 15px 30px rgba(0,0,0,0.08);
}

.person-row::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--c-firebrick);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.person-row:hover::before {
    opacity: 1;
}

.image-container {
    width: 100px;
    height: 100px;
    margin: 0 auto 15px;
    flex-shrink: 0;
}

.profile-img {
    width: 100%;
    height: 100%;
    background: #f1f5f9;
    border: 3px solid var(--c-firebrick);
    border-radius: 50%;
    object-fit: cover;
}

.profile-img-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    border: 3px solid var(--c-firebrick);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-firebrick);
    font-size: 2em;
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
}

.details {
    text-align: center;
}

.name {
    font-family: 'Montserrat', sans-serif;
    margin: 10px 0 5px;
    font-size: 1.2em;
    color: var(--c-black-bean);
    font-weight: 800;
}

.designation {
    font-size: 0.85rem;
    color: var(--c-firebrick);
    font-weight: 600;
    margin-bottom: 5px;
}

.program {
    font-size: 0.8rem;
    color: #64748b;
    margin-bottom: 8px;
}

.bio {
    font-size: 0.85rem;
    color: var(--c-onyx);
    line-height: 1.5;
    margin-top: 10px;
    font-style: italic;
}

.contact-info {
    margin-top: 15px;
    border-top: 1px solid var(--c-platinum);
    padding-top: 15px;
    display: flex;
    justify-content: center;
    gap: 12px;
}

.contact-info a {
    width: 38px;
    height: 38px;
    background: var(--c-platinum);
    color: var(--c-black-bean);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.contact-info a:hover {
    background: var(--c-firebrick);
    color: white;
    transform: scale(1.1);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: #94a3b8;
    font-style: italic;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 1rem;
    border: 1px dashed var(--c-platinum);
}

.empty-state i {
    font-size: 2rem;
    margin-bottom: 10px;
    display: block;
    color: var(--c-platinum);
}

/* Footer */
.footer {
    text-align: center;
    padding: 40px 0;
    margin-top: 60px;
    border-top: 4px solid var(--c-firebrick);
    color: var(--c-black-bean);
    font-weight: 700;
}

/* Loading State */
.loading {
    text-align: center;
    padding: 60px;
    color: var(--c-firebrick);
}

.loading i {
    font-size: 3rem;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Error State */
.error-state {
    text-align: center;
    padding: 60px 20px;
    background: #fef2f2;
    border-radius: 1rem;
    border: 2px solid #fee2e2;
}

.error-state h2 {
    color: var(--c-firebrick);
    margin-bottom: 10px;
}

.error-state p {
    color: var(--c-onyx);
}

/* Responsive */
@media (max-width: 1024px) {
    .sections { 
        grid-template-columns: 1fr; 
    }
    
    .header h1 { 
        font-size: 1.8em; 
    }
    
    .column {
        margin-bottom: 20px;
    }
}

@media (max-width: 480px) {
    .app {
        padding: 20px 15px;
    }
    
    .header {
        padding: 40px 15px;
    }
    
    .header h1 {
        font-size: 1.5em;
    }
    
    .person-row {
        padding: 20px 15px;
    }
}