/* Custom Properties for Consistency */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');

:root {
    --color-bsph-green: #177E17;
    --color-bsph-green-dark: #0d4e0d;
    --color-bsph-green-light: #e6f2e6;
    --color-white: #FFFFFF;
    --color-text-dark: #2c3e50;
    --color-text-medium: #607d8b;
    --color-border: #e8e8e8;
    --color-hover-bg: #f5fcf5;
    --color-focus-outline: #177E17;
    --font-primary: 'Poppins', Arial, sans-serif;
    --font-serif: 'Georgia', serif;
    --transition-speed: 0.3s;
    --box-shadow-light: 0 2px 8px rgba(0, 0, 0, 0.08);
    --box-shadow-medium: 0 4px 15px rgba(0, 0, 0, 0.1);
    --box-shadow-hover: 0 8px 20px rgba(23, 126, 23, 0.15);
}

* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-dark);
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #e8ede8 100%);
    min-height: 100vh;
}

/* Skip to content link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-bsph-green);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* Main Container */
.bsph-faculty-container {
    max-width: 1200px;
    margin: 40px auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 30px;
    padding: 0 20px;
}

/* Enhanced Master Control Banner */
.master-control-banner {
    grid-column: 1 / -1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    margin-bottom: 30px;
    background: linear-gradient(135deg, var(--color-bsph-green-light) 80%, #d4e8d4 100%);
    border: 2px solid var(--color-bsph-green);
    border-radius: 12px;
    box-shadow: var(--box-shadow-medium);
    animation: slideDown 0.5s ease-out;
}

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

.banner-text {
    flex: 1;
}

.banner-text p {
    margin: 0 0 5px 0;
    font-size: 1.2em;
    color: var(--color-text-dark);
}

.banner-subtitle {
    font-size: 0.9em;
    color: var(--color-text-medium);
    display: block;
}

/* Enhanced View All Button */
.view-all-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: var(--color-bsph-green);
    color: var(--color-white);
    padding: 14px 28px;
    border: 2px solid var(--color-bsph-green);
    border-radius: 8px;
    font-weight: 600;
    font-size: 1em;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(23, 126, 23, 0.3);
}

.view-all-btn:hover {
    background-color: var(--color-bsph-green-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(23, 126, 23, 0.4);
}

.view-all-btn:focus {
    outline: 3px solid var(--color-focus-outline);
    outline-offset: 2px;
}

.view-all-btn.is-active {
    background-color: var(--color-white);
    color: var(--color-bsph-green);
    border-color: var(--color-bsph-green);
    box-shadow: inset 0 2px 8px rgba(23, 126, 23, 0.2);
}

.view-all-btn.is-active:hover {
    background-color: #f0fff0;
    color: var(--color-bsph-green-dark);
}

.btn-icon {
    font-size: 1.2em;
}

/* Master List Container */
.master-list-view {
    grid-column: 1 / -1;
    padding: 25px;
    background-color: var(--color-white);
    border-radius: 12px;
    box-shadow: var(--box-shadow-medium);
    border: 1px solid var(--color-border);
    max-height: 3000px;
    overflow: hidden;
    opacity: 1;
    transition: max-height 0.8s ease-in-out, opacity 0.5s ease-in-out, padding 0.8s ease-in-out;
}

.master-list-view.collapsed {
    max-height: 0;
    opacity: 0;
    padding: 0;
    margin: 0;
    border: none;
}

.master-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    flex-wrap: wrap;
    gap: 15px;
}

.master-list-heading {
    font-family: var(--font-serif);
    color: var(--color-bsph-green);
    font-size: 1.6em;
    margin: 0;
    font-weight: 700;
}

/* Filter Controls */
.filter-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

.filter-controls label {
    font-weight: 600;
    color: var(--color-text-medium);
}

.sort-dropdown {
    padding: 8px 12px;
    border: 2px solid var(--color-border);
    border-radius: 6px;
    font-family: var(--font-primary);
    font-size: 0.95em;
    cursor: pointer;
    transition: border-color var(--transition-speed);
    background-color: white;
}

.sort-dropdown:hover {
    border-color: var(--color-bsph-green);
}

.sort-dropdown:focus {
    outline: none;
    border-color: var(--color-bsph-green);
    box-shadow: 0 0 0 3px rgba(23, 126, 23, 0.1);
}

/* Loading State */
.loading-state {
    text-align: center;
    padding: 40px;
    color: var(--color-text-medium);
    font-size: 1.1em;
}

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-bsph-green);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Horizontal Card Grid */
.horizontal-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

/* Publication Card */
.publication-card {
    background-color: var(--color-white);
    padding: 20px;
    border-radius: 10px;
    border-left: 5px solid var(--color-bsph-green);
    box-shadow: var(--box-shadow-light);
    transition: all var(--transition-speed) ease;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    position: relative;
}

.publication-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(23, 126, 23, 0.05), transparent);
    opacity: 0;
    transition: opacity var(--transition-speed);
    pointer-events: none;
}

.publication-card:hover::before,
.publication-card:focus::before {
    opacity: 1;
}

.publication-card:hover,
.publication-card:focus {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-hover);
    border-left-color: var(--color-bsph-green-dark);
    outline: none;
}

.card-lecturer-name {
    font-size: 0.5em;
    color: var(--color-text-medium);
    margin: 0 0 8px 0;
    font-weight: 600;
}

.card-title {
    font-size: 1.05em;
    font-weight: 700;
    color: var(--color-text-dark);
    margin: 0 0 12px 0;
    line-height: 1.4;
}

.card-abstract {
    font-size: 0.9em;
    color: #888;
    margin-bottom: 15px;
    line-height: 1.5;
    flex-grow: 1;
}

.card-resources {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: auto;
}

.resource-link {
    background-color: var(--color-bsph-green);
    color: var(--color-white);
    text-decoration: none;
    padding: 6px 12px;
    border-radius: 5px;
    font-size: 0.85em;
    font-weight: 700;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.resource-link:hover {
    background-color: var(--color-bsph-green-dark);
    transform: translateY(-2px);
    box-shadow: 0 2px 8px rgba(23, 126, 23, 0.3);
}

.resource-link:focus {
    outline: 2px solid var(--color-focus-outline);
    outline-offset: 2px;
}

/* Lecturer Section */
.lecturer-section {
    padding: 30px;
    background-color: var(--color-white);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    box-shadow: var(--box-shadow-light);
    transition: box-shadow var(--transition-speed) ease;
}

.lecturer-section:hover {
    box-shadow: var(--box-shadow-hover);
}

/* Bio Summary */
.bio-summary {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}

.lecturer-photo {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--color-bsph-green);
    box-shadow: 0 0 0 6px rgba(23, 126, 23, 0.1);
    flex-shrink: 0;
    transition: transform var(--transition-speed);
}

.lecturer-photo:hover {
    transform: scale(1.05);
}

.header-content {
    flex: 1;
}

.lecturer-name {
    font-family: var(--font-serif);
    color: var(--color-bsph-green);
    font-size: 1.8em;
    margin: 0 0 5px 0;
    font-weight: 700;
}

.pmp-cert {
    font-size: 0.7em;
    color: var(--color-text-medium);
    font-weight: 500;
}

.lecturer-title {
    color: var(--color-text-medium);
    font-size: 1em;
    font-weight: 500;
    margin: 0 0 10px 0;
}

/* Quick Stats Badges */
.quick-stats {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.stat-badge {
    background-color: var(--color-bsph-green-light);
    color: var(--color-bsph-green-dark);
    padding: 4px 10px;
    border-radius: 15px;
    font-size: 0.85em;
    font-weight: 600;
    border: 1px solid var(--color-bsph-green);
}

.lecturer-bio p {
    line-height: 1.7;
    color: var(--color-text-dark);
    margin-top: 15px;
    font-size: 0.95em;
}

.section-divider {
    border: none;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--color-border), transparent);
    margin: 25px 0;
}

/* Toggle Publications Button */
.toggle-publications-btn {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    background-color: transparent;
    border: 2px solid var(--color-border);
    border-radius: 8px;
    padding: 12px 18px;
    margin-bottom: 15px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 600;
    color: var(--color-text-dark);
    transition: all 0.2s ease;
}

.toggle-publications-btn:hover {
    background-color: var(--color-hover-bg);
    border-color: var(--color-bsph-green);
    transform: translateX(5px);
}

.toggle-publications-btn:focus {
    outline: 3px solid var(--color-focus-outline);
    outline-offset: 2px;
}

.toggle-icon {
    font-style: normal;
    transition: transform 0.3s ease;
    margin-left: 10px;
    color: var(--color-bsph-green);
    font-size: 1.2em;
}

.toggle-publications-btn[aria-expanded="true"] .toggle-icon {
    transform: rotate(180deg);
}

/* Publications Container */
.publications-container {
    max-height: 1200px;
    overflow: hidden;
    transition: max-height 0.5s ease-out, opacity 0.4s ease-out;
    opacity: 1;
}

.publications-container.collapsed {
    max-height: 0;
    opacity: 0;
}

.publications-title {
    font-family: var(--font-primary);
    color: var(--color-text-dark);
    font-size: 1.3em;
    margin-bottom: 20px;
    border-left: 5px solid var(--color-bsph-green);
    padding-left: 15px;
    font-weight: 700;
    margin-top: 0;
}

.publication-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.publication-item {
    padding: 15px 12px;
    border-bottom: 1px solid var(--color-border);
    transition: all 0.2s ease;
    cursor: pointer;
    border-radius: 6px;
    margin-bottom: 5px;
}

.publication-item:last-child {
    border-bottom: none;
}

.publication-item:hover,
.publication-item:focus {
    background-color: var(--color-hover-bg);
    padding-left: 20px;
    outline: none;
    box-shadow: inset 4px 0 0 var(--color-bsph-green);
}

.publication-item:focus-visible {
    outline: 2px solid var(--color-focus-outline);
    outline-offset: 2px;
}

.publication-item a {
    text-decoration: none;
    display: block;
}

.publication-title {
    font-size: 1em;
    color: var(--color-text-dark);
    font-weight: 600;
    line-height: 1.5;
    transition: color 0.2s ease;
}

.publication-item:hover .publication-title {
    color: var(--color-bsph-green);
}

/* Responsive Design */
@media (max-width: 950px) {
    .bsph-faculty-container {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    }
    
    .horizontal-card-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

@media (max-width: 650px) {
    .master-control-banner {
        flex-direction: column;
        text-align: center;
        gap: 15px;
        padding: 20px;
    }
    
    .view-all-btn {
        width: 100%;
        justify-content: center;
    }
    
    .bsph-faculty-container {
        grid-template-columns: 1fr;
        gap: 20px;
        margin: 20px auto;
        padding: 0 15px;
    }
    
    .lecturer-section {
        padding: 20px;
    }
    
    .bio-summary {
        flex-direction: column;
        text-align: center;
    }
    
    .lecturer-photo {
        width: 90px;
        height: 90px;
    }
    
    .master-list-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .filter-controls {
        width: 100%;
    }
    
    .sort-dropdown {
        flex: 1;
    }
    
    .horizontal-card-grid {
        grid-template-columns: 1fr;
    }
    
    .card-resources {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .banner-text p {
        font-size: 1em;
    }
    
    .lecturer-name {
        font-size: 1.5em;
    }
    
    .master-list-heading {
        font-size: 1.3em;
    }
}

/* Print Styles */
@media print {
    .master-control-banner,
    .toggle-publications-btn {
        display: none;
    }
    
    .publications-container {
        max-height: none !important;
        opacity: 1 !important;
    }
    
    .lecturer-section {
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .lecturer-section,
    .publication-card {
        border: 2px solid var(--color-text-dark);
    }
    
    .view-all-btn {
        border: 3px solid var(--color-text-dark);
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}