/* 
 * Premium Design for Study Destination Partner List 
 * Uses modern UI patterns: Glassmorphism, soft shadows, micro-animations, rich gradients
 */

:root {
    --sd-primary-color: #4F46E5; /* Indigo */
    --sd-primary-hover: #4338CA;
    --sd-bg-gradient: linear-gradient(135deg, #f0f9ff 0%, #e0e7ff 100%);
    --sd-text-main: #1e293b;
    --sd-text-muted: #64748b;
    --sd-card-bg: rgba(255, 255, 255, 0.85);
    --sd-border-color: rgba(226, 232, 240, 0.8);
    --sd-shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --sd-shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --sd-shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --sd-radius-lg: 16px;
    --sd-radius-md: 12px;
    --sd-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sd-partner-list-container {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    max-width: 1200px;
    margin: 2rem auto;
    padding: 2.5rem;
    background: var(--sd-bg-gradient);
    border-radius: var(--sd-radius-lg);
    box-shadow: var(--sd-shadow-lg);
    color: var(--sd-text-main);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-sizing: border-box;
}

.sd-partner-list-container * {
    box-sizing: border-box;
}

/* Header & Search */
.sd-pl-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    gap: 1rem;
    border-bottom: 2px solid var(--sd-border-color);
    padding-bottom: 1.5rem;
}

.sd-pl-header h2 {
    margin: 0;
    font-size: 2rem;
    font-weight: 800;
    color: #0C1F63;
}

.sd-pl-search-wrap {
    position: relative;
    width: 100%;
    max-width: 350px;
}

.sd-pl-search-wrap input {
    width: 100%;
    padding: 0.8rem 1rem 0.8rem 2.8rem;
    border: 1px solid var(--sd-border-color);
    border-radius: var(--sd-radius-md);
    font-size: 1rem;
    background: white;
    color: var(--sd-text-main);
    box-shadow: var(--sd-shadow-sm);
    transition: var(--sd-transition);
    outline: none;
}

.sd-pl-search-wrap input:focus {
    border-color: var(--sd-primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

.sd-pl-search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--sd-text-muted);
    pointer-events: none;
    font-size: 1.1rem;
}

/* Layout */
.sd-pl-layout {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

@media (max-width: 768px) {
    .sd-pl-layout {
        flex-direction: column;
    }
}

/* Tabs / Sidebar */
.sd-pl-tabs {
    flex: 0 0 250px;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    position: sticky;
    top: 2rem;
    max-height: 80vh;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.sd-pl-tabs::-webkit-scrollbar {
    width: 6px;
}
.sd-pl-tabs::-webkit-scrollbar-thumb {
    background: rgba(100, 116, 139, 0.3);
    border-radius: 4px;
}

@media (max-width: 768px) {
    .sd-pl-tabs {
        flex: 1 1 100%;
        width: 100%;
        flex-direction: row;
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 1rem;
    }
}

.sd-pl-tab-btn {
    background: transparent;
    border: none;
    padding: 0.8rem 1.2rem;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--sd-text-muted);
    border-radius: var(--sd-radius-md);
    cursor: pointer;
    transition: var(--sd-transition);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

@media (max-width: 768px) {
    .sd-pl-tab-btn {
        flex: 0 0 auto;
        white-space: nowrap;
    }
}

.sd-pl-tab-btn:hover {
    background: rgba(255, 255, 255, 0.6);
    color: var(--sd-text-main);
    transform: translateX(4px);
}

.sd-pl-tab-btn.active {
    background: var(--sd-primary-color);
    color: white;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

.sd-pl-tab-btn.active:hover {
    transform: none;
}

.sd-pl-badge {
    background: rgba(0, 0, 0, 0.08);
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
}

.sd-pl-tab-btn.active .sd-pl-badge {
    background: rgba(255, 255, 255, 0.25);
    color: white;
}

/* Content Area */
.sd-pl-content-area {
    flex: 1;
    min-width: 0;
}

.sd-pl-tab-content {
    display: none;
    animation: sdFadeIn 0.4s ease forwards;
}

.sd-pl-tab-content.active {
    display: block;
}

@keyframes sdFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.sd-pl-country-title {
    margin-top: 0;
    margin-bottom: 1.5rem;
    font-size: 1.6rem;
    color: var(--sd-text-main);
    display: flex;
    align-items: baseline;
    gap: 0.8rem;
    border-bottom: 1px solid var(--sd-border-color);
    padding-bottom: 0.8rem;
}

.sd-pl-count {
    font-size: 1rem;
    color: var(--sd-text-muted);
    font-weight: 500;
}

.sd-pl-university-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.2rem;
}

.sd-pl-university-item {
    margin: 0;
    padding: 0;
}

.sd-pl-uni-card {
    background: var(--sd-card-bg);
    border: 1px solid var(--sd-border-color);
    padding: 1.2rem;
    border-radius: var(--sd-radius-md);
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--sd-shadow-sm);
    transition: var(--sd-transition);
    height: 100%;
    cursor: default;
}

.sd-pl-uni-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--sd-shadow-hover);
    border-color: rgba(79, 70, 229, 0.3);
}

.sd-pl-uni-icon {
    font-size: 1.5rem;
    background: rgba(79, 70, 229, 0.1);
    color: var(--sd-primary-color);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    flex-shrink: 0;
}

.sd-pl-uni-name {
    font-weight: 600;
    font-size: 1.05rem;
    line-height: 1.4;
    color: var(--sd-text-main);
}

.sd-pl-no-results {
    text-align: center;
    padding: 3rem;
    background: var(--sd-card-bg);
    border-radius: var(--sd-radius-lg);
    border: 2px dashed var(--sd-border-color);
    color: var(--sd-text-muted);
    font-size: 1.2rem;
}