html, body {
    scroll-behavior: smooth;
    background: #0f1115;
}

main {
    background: radial-gradient(circle at 20% 20%, rgba(59, 130, 246, 0.08), transparent 32%), radial-gradient(circle at 80% 10%, rgba(99, 102, 241, 0.08), transparent 32%), #0f1115;
    min-height: calc(100vh - 70px);
    padding: var(--spacing-6) 0 var(--spacing-10);
}

.feed-container {
    width: min(1100px, 100%);
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

.feed-shell {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.feed-header {
    position: sticky;
    top: 12px;
    z-index: 5;
    background: rgba(20, 23, 31, 0.9);
    border: 1px solid #1f2433;
    border-radius: 18px;
    padding: var(--spacing-5) var(--spacing-6);
    box-shadow: 0 24px 48px -32px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(8px);
}

.feed-header h1 {
    font-size: 2rem;
    font-weight: 800;
    color: #e5e7eb;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-1);
}

.feed-header .lede {
    color: #9ca3af;
    font-size: 1rem;
    max-width: 720px;
    line-height: 1.6;
}

.feed-top {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-4);
    flex-wrap: wrap;
    align-items: center;
}

.cta-group {
    display: flex;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: 999px;
    border: 1px dashed #374151;
    background: transparent;
    color: #e5e7eb;
    font-weight: 600;
    transition: var(--transition);
}

.btn-ghost:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 10px 18px -16px rgba(37, 99, 235, 0.6);
}

.search-stack {
    display: grid;
    gap: var(--spacing-3);
    margin-top: var(--spacing-4);
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
    background: #0b0d13;
    border: 1px solid #1f2433;
    border-radius: 14px;
    padding: var(--spacing-3) var(--spacing-4);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.search-box input {
    width: 100%;
    border: none;
    outline: none;
    font-size: var(--font-size-base);
    background: transparent;
    color: #e5e7eb;
}

.search-icon {
    margin-right: var(--spacing-3);
    color: #6b7280;
}

.filter-row {
    display: flex;
    gap: var(--spacing-2);
    flex-wrap: wrap;
}

.filter-selects {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-3);
}

.area-filter {
    display: grid;
    gap: var(--spacing-1);
    max-width: 320px;
}

.area-filter label {
    font-weight: 700;
    color: #9ca3af;
    font-size: var(--font-size-sm);
}

.area-filter select {
    width: 100%;
    background: #0b0d13;
    color: #e5e7eb;
    border: 1px solid #1f2433;
    border-radius: 10px;
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: var(--transition);
}

.area-filter select:focus {
    outline: 2px solid rgba(37, 99, 235, 0.4);
    border-color: var(--primary-color);
}

.chip {
    border: 1px solid #1f2433;
    background: #0b0d13;
    color: #e5e7eb;
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: 999px;
    font-weight: 700;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: var(--transition);
}

.chip:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.chip.active {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.12);
    color: var(--primary-color);
    box-shadow: 0 8px 18px -14px rgba(37, 99, 235, 0.6);
}

.feed-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.post-card {
    background: #14171f;
    border: 1px solid #1f2433;
    border-radius: 14px;
    display: grid;
    grid-template-columns: 72px 1fr;
    box-shadow: 0 18px 38px -28px rgba(0, 0, 0, 0.55);
    transition: var(--transition);
    cursor: pointer;
    overflow: hidden;
}

.post-card:hover {
    transform: translateY(-2px);
    border-color: rgba(37, 99, 235, 0.4);
    box-shadow: 0 22px 48px -32px rgba(37, 99, 235, 0.35);
}

.post-score {
    background: linear-gradient(180deg, #111827 0%, #0b0d13 100%);
    border-right: 1px solid #1f2433;
    display: grid;
    place-items: center;
    padding: var(--spacing-4) var(--spacing-2);
    gap: var(--spacing-2);
}

.score-value {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: #e5e7eb;
    line-height: 1;
}

.score-label {
    font-size: var(--font-size-xs);
    color: #6b7280;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 700;
}

.post-body {
    padding: var(--spacing-4) var(--spacing-5);
    display: grid;
    gap: var(--spacing-2);
}

.post-top {
    display: flex;
    gap: var(--spacing-2);
    flex-wrap: wrap;
    align-items: center;
}

.post-meta {
    color: #9ca3af;
    font-size: var(--font-size-sm);
}

.post-title {
    font-size: 1.1rem;
    font-weight: 800;
    color: #f9fafb;
    letter-spacing: -0.01em;
}

.post-subtitle {
    color: #d1d5db;
}

.flair {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: 999px;
    font-weight: 700;
    font-size: var(--font-size-xs);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.flair--internship {
    background: rgba(37, 99, 235, 0.15);
    color: #93c5fd;
    border: 1px solid rgba(37, 99, 235, 0.4);
}

.flair--academic {
    background: rgba(109, 40, 217, 0.15);
    color: #c4b5fd;
    border: 1px solid rgba(109, 40, 217, 0.4);
}

.flair--general {
    background: rgba(255, 255, 255, 0.06);
    color: #e5e7eb;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.post-excerpt {
    color: #d1d5db;
    line-height: 1.6;
    margin: var(--spacing-1) 0;
}

.badge-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.04);
    color: #d1d5db;
    font-weight: 600;
    border: 1px solid #1f2433;
}

.badge .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #6b7280;
}

.badge.salary .dot {
    background: #22c55e;
}

.badge.workload .dot {
    background: #60a5fa;
}

.badge.location .dot {
    background: #06b6d4;
}

.badge.topic .dot {
    background: #a855f7;
}

.badge.area .dot {
    background: #f59e0b;
}

.badge.course .dot {
    background: #f97316;
}

.post-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-4);
    margin-top: var(--spacing-1);
}

.post-actions {
    display: flex;
    gap: var(--spacing-3);
    flex-wrap: wrap;
    color: #9ca3af;
    font-weight: 600;
}

.post-actions span {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
}

.action-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.12);
    color: #bfdbfe;
    font-weight: 700;
}

.state-block {
    background: rgba(20, 23, 31, 0.85);
    border: 1px dashed #1f2433;
    border-radius: 14px;
    text-align: center;
    padding: var(--spacing-8);
    color: #9ca3af;
    box-shadow: 0 18px 38px -28px rgba(0, 0, 0, 0.5);
}

.state-block h3 {
    font-size: var(--font-size-xl);
    color: #e5e7eb;
    margin-bottom: var(--spacing-2);
}

.loading-state svg {
    animation: spin 1s linear infinite;
    color: #93c5fd;
    margin-bottom: var(--spacing-3);
}

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

@media (max-width: 900px) {
    .feed-header {
        position: static;
    }

    .post-card {
        grid-template-columns: 1fr;
    }

    .post-score {
        grid-template-columns: repeat(2, auto);
        grid-auto-flow: column;
        justify-content: start;
        padding: var(--spacing-3) var(--spacing-4);
    }

    .post-body {
        padding: var(--spacing-4);
    }
}